Reconditioning Dimensions for Idlers {4159} Caterpillar


Reconditioning Dimensions for Idlers {4159}

Usage:

D6D 01Y
Caterpillar Products
Machines with Grease Lubricated Track with Swage
Machines with Greased Lubricated Track (GLT)
Machines with Positive Pin Retention (PPR) Track
Machines with Positive Pin Retention 2 (PPR2) Track
Machines with Rotating Bushing Track
Machines with Sealed Positive Pin Retention (PPR) Track
Machines with Sealed Track
Machines with Sleeve Bearing Track
Machines with SystemOne Undercarriage
Machines with non-PPR Sealed and Lubricated Track

Introduction

Table 1
Revision  Summary of Changes in SEBF8571 
26  Added serial number prefixes for New Product Introduction. 
25  Added serial number prefixes for New Product Introduction. 
24  Added serial number prefixes for New Product Introduction. 
23  Added models 352F, 6015B, and 538B.
Added serial number prefixes for New Product Introduction. 
22  Added serial number prefixes for New Product Introduction. 

© 2019 Caterpillar All Rights Reserved. This guideline is for the use of Caterpillar dealers only. Unauthorized use of this document or the proprietary processes therein without permission may be violation of intellectual property law. Information contained in this document is considered Caterpillar: Confidential Yellow.

This Undercarriage Reconditioning Bulletin contains the necessary information to allow a dealer to establish a parts reusability program. Reuse and salvage information enables Caterpillar dealers and customers to benefit from cost reductions. Every effort has been made to provide the most current information that is known to Caterpillar. Continuing improvement and advancement of product design might have caused changes to your product which are not included in this publication. This Undercarriage Reconditioning Bulletin must be used with the latest technical information that is available from Caterpillar.

For questions or additional information concerning this guideline, submit a form for feedback in the Service Information System. To address an urgent issue, use the following resources to communicate your request to Caterpillar Repair Process Engineering:

For technical questions when using this document, work with your Dealer Technical Communicator (TC).

Summary

This bulletin contains the specifications for reconditioning the idlers that are used on Caterpillar Track-Type machines. Tables 2 through 8 list the dimensions for the installed bearing diameter for a corresponding idler assembly. Tables 9 through 16 list the specifications for reconditioning the idlers.

References

Reference: Undercarriage Reconditioning Guide, SEBF8599

Reference: Service Handbook, PEKP9400, "Custom Track Service Handbook"

Reference: Parts Sales Kit, PECP3003

Safety



Illustration 1g02139237

Most accidents that involve product operation, maintenance, and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs. A person must be alert to potential hazards. This person should also have the necessary training, skills, and tools to perform these functions properly.

This bulletin may contain hazardous steps. A safety alert symbol like the ones below is used to identify a hazard.

Warning messages identify a specific, imminent, latent, hazard that has a reasonable probability of resulting in personal injury or death if the warning is ignored.

------ WARNING! ------

Do not attempt to disassemble or assemble this machine until you read and understand the disassembly and assembly instructions. Improper disassembly and assembly procedures could result in injury or death.


------ WARNING! ------

Inspect all threaded components before use. Damaged threads may fail under hydraulic pressure. Broken threads may release flying objects that are propelled with great force. Personal injury or death can occur if struck by flying objects.


------ WARNING! ------

Do not stand near the hydraulic press while the press is in operation. A component that slips or breaks under pressure may fly into the air with great force. Personal injury or death can occur if struck by flying objects.


Canceled Part Numbers and Replaced Part Numbers

This document does not include all canceled part numbers and replaced part numbers. Use NPR on SIS for information about canceled part numbers and replaced part numbers. NPR will provide the current part numbers for replaced parts.

Installed Bearing Diameter

Note: The true center line must be kept on all idler rebuilds for proper rebuild procedures. All idler width dimensions are based off center line of the idler. Measure from machined retainer surface on hub to establish the true center line of hub.



Illustration 2g03710426
(M) Installed Bearing Diameter

Track-Type Tractors with Elevated Sprocket

Table 2
Installed Bearing Diameter 
Sales Model  Idler Assembly  Installed Bearing Diameter (M) 
D11T
D11R
D11N 
187-1011  162.82 ± 0.03 mm (6.410 ± 0.001 inch) 
292-8088 162.82 ± 0.03 mm (6.410 ± 0.001 inch) 
D10T
D10R
D10N 
7T-0961  136.78 ± 0.03 mm (5.385 ± 0.001 inch) 
257-9829 136.78 ± 0.03 mm (5.385 ± 0.001 inch) 
D10  6Y-0216  162.77 ± 0.03 mm (6.408 ± 0.001 inch) 
D9T
D9R
D9N 
7T-2770
359-9579 
127.25 ± 0.03 mm (5.010 ± 0.001 inch) 
D9L
589 
9W-6037  136.78 ± 0.03 mm (5.385 ± 0.001 inch) 
D8T
D8R
D8N
D8L
578 
6Y-0556  127.25 ± 0.03 mm (5.010 ± 0.001 inch) 
D8T
D8R
D8N
587T
587R
583R
PL87
PL83 
6Y-0553  127.25 ± 0.03 mm (5.010 ± 0.001 inch) 
D8T
D8R
D8N 
329-5408  127.25 ± 0.03 mm (5.010 ± 0.001 inch) 
329-5411 127.25 ± 0.03 mm (5.010 ± 0.001 inch) 
D7R
D7H
572R 
192-0215  127.25 ± 0.03 mm (5.010 ± 0.001 inch) 
192-0219 127.25 ± 0.03 mm (5.010 ± 0.001 inch) 
195-9816 127.25 ± 0.03 mm (5.010 ± 0.001 inch) 
D7R
D7H 
192-0223  127.25 ± 0.03 mm (5.010 ± 0.001 inch) 
249-2940 127.25 ± 0.03 mm (5.010 ± 0.001 inch) 
D7E  192-0223  127.25 ± 0.03 mm (5.010 ± 0.001 inch) 
D6T
D6R2
D6R
D6N 
202-4303  108.06 ± 0.02 mm (4.254 ± 0.001 inch) 
202-4295 108.06 ± 0.02 mm (4.254 ± 0.001 inch) 
286-9306 108.06 ± 0.02 mm (4.254 ± 0.001 inch) 
PL72  395-4270  108.06 ± 0.02 mm (4.254 ± 0.001 inch) 
D6T  323-1171  108.06 ± 0.02 mm (4.254 ± 0.001 inch) 
D6R
D6H 
159-3658  108.06 ± 0.02 mm (4.254 ± 0.001 inch) 
D6N
D6M
D5R
D5H 
190-1547  95.84 ± 0.08 mm (3.773 ± 0.003 inch) 
290-0738 95.84 ± 0.08 mm (3.773 ± 0.003 inch) 
323-1169 95.84 ± 0.08 mm (3.773 ± 0.003 inch) 
D5N
D5M
D4H 
190-1536  89.666 ± 0.080 mm (3.5302 ± 0.0032 inch) 
D5N
D5M
D4H
561N
561M
561H 
190-2495  89.666 ± 0.080 mm (3.5302 ± 0.0032 inch) 
D5N
D5M
D4H 
290-0750  89.67 ± 0.08 mm (3.530 ± 0.003 inch) 

Asphalt Pavers

Table 3
Installed Bearing Diameter for Tapered Shaft 
Sales Model  Idler Assembly  Installed Bearing Diameter 
Small Diameter Large Diameter
AP655F  262-4104  69.85 mm (2.75 inch)  73.025 mm (2.875 inch) 

Skidders

Table 4
Installed Bearing Diameter 
Sales Model  Idler Assembly  Installed Bearing Diameter (M) 
D5H
517 
8E-4008  108.06 ± 0.02 mm (4.254 ± 0.001 inch) 
D5H  190-1547  95.84 ± 0.08 mm (3.773 ± 0.003 inch) 
527  202-4295  108.06 ± 0.02 mm (4.254 ± 0.001 inch) 
D4H  190-1536  89.666 ± 0.080 mm (3.5302 ± 0.0032 inch) 

Track-Type Tractors with Low Sprocket

Table 5
Installed Bearing Diameter 
Sales Model  Idler Assembly  Installed Bearing Diameter (M) 
D9
594 
5S-1532  89.28 ± 0.03 mm (3.515 ± 0.001 inch) 
D8
583 
188-5610  82.93 ± 0.03 mm (3.265 ± 0.001 inch) 
D7
571
572 
9H-8489  70.23 ± 0.03 mm (2.765 ± 0.001 inch) 
1S-8186 70.23 ± 0.03 mm (2.765 ± 0.001 inch) 
277-4492 70.23 ± 0.03 mm (2.765 ± 0.001 inch) 
D6  5M-5009  63.75 ± 0.03 mm (2.509 ± 0.001 inch) 
7T-4562 63.75 ± 0.03 mm (2.509 ± 0.001 inch) 
D5
561 
8S-2560  63.75 ± 0.03 mm (2.509 ± 0.001 inch) 
7T-3501 63.75 ± 0.03 mm (2.509 ± 0.001 inch) 
1M-3121 63.75 ± 0.03 mm (2.509 ± 0.001 inch) 
D4  3K-2866  54.33 ± 0.03 mm (2.139 ± 0.001 inch) 
1M-8867 54.33 ± 0.03 mm (2.139 ± 0.001 inch) 
D6K2
D6K
PL61 
368-9792  54.33 ± 0.03 mm (2.139 ± 0.001 inch) 
D5K2  419-5475  79.38 ± 0.03 mm (3.12519 ± 0.00118 inch) 
419-5476 91.52 ± 0.03 mm (3.60314 ± 0.00118 inch) 
D5K  262-2093  54.33 ± 0.03 mm (2.139 ± 0.001 inch) 
261-4472 54.33 ± 0.03 mm (2.139 ± 0.001 inch) 
D5G
D5C 
9U-9065  54.33 ± 0.03 mm (2.139 ± 0.001 inch) 
250-0368 54.33 ± 0.03 mm (2.139 ± 0.001 inch) 
D4K
D3K 
261-4473  50.825 ± 0.080 mm (2.0010 ± 0.0032 inch) 
D4K
D3K
D4G
D3G
D4C
D3C
D4B
D3B
D3 
106-9187  50.83 ± 0.08 mm (2.001 ± 0.003 inch) 
D4K2
D3K2 
419-5475  79.38 ± 0.03 mm (3.13 ± 0.0012 inch) 
394-3645
D4G
D3G
D4C
D3C 
249-7628  50.825 ± 0.080 mm (2.0010 ± 0.0032 inch) 
D4C
D3C
D4B
D3B
D3 
8E-7342  50.835 ± 0.085 mm (2.0014 ± 0.0034 inch) 

Track-Type Loaders

Table 6
Installed Bearing Diameter 
Sales Model  Idler Assembly  Installed Bearing Diameter (M) 
983  188-5160  82.93 ± 0.03 mm (3.265 ± 0.001 inch) 
977  1S-8186  70.23 ± 0.03 mm (2.765 ± 0.001 inch) 
9H-8489 70.23 ± 0.03 mm (2.765 ± 0.001 inch) 
977
973C
973 
277-4492  70.23 ± 0.03 mm (2.765 ± 0.001 inch) 
973D  115-0605  117.45 ± 0.04 mm (4.624 ± 0.002 inch) 
963D  286-4231  63.754 ± 0.025 mm (2.5100 ± 0.0010 inch) 
963K
963D
963C
963B
963
955 
7T-4562  63.75 ± 0.03 mm (2.510 ± 0.001 inch) 
963C
963B
963 
228-4231  63.754 ± 0.025 mm (2.5100 ± 0.0010 inch) 
955  5M-5009  63.75 ± 0.03 mm (2.510 ± 0.001 inch) 
955
951 
8S-2560  63.75 ± 0.03 mm (2.510 ± 0.001 inch) 
953D
953C
953B
953
951 
7T-3501  63.75 ± 0.03 mm (2.510 ± 0.001 inch) 
953C
953B 
228-4230  63.754 ± 0.025 mm (2.5100 ± 0.0010 inch) 
943  7T-1315  54.33 ± 0.03 mm (2.139 ± 0.001 inch) 
941  1M-8867  54.33 ± 0.03 mm (2.139 ± 0.001 inch) 
939C
939 
9U-9065  54.33 ± 0.03 mm (2.139 ± 0.001 inch) 
935C
935B
933C
933
931C
931B
931 
106-9187  50.83 ± 0.08 mm (2.001 ± 0.003 inch) 
8E-7342 50.835 ± 0.085 mm (2.0014 ± 0.0034 inch) 

Excavators and Front Shovels

Table 7
Installed Bearing Diameter 
Sales Model  Idler Assembly  Installed Bearing Diameter (M) 
6020B  471-7758  185.5 mm (7.303 inch) 
6015B  435-4448  150.18 ± 0.07 mm (5.91259 ± 0.003 inch) 
5130
5130B 
218-5073  170.39 ± 0.02 mm (6.708 ± 0.001 inch) 
5110B  121-7351  150.18 ± 0.07 mm (5.913 ± 0.003 inch) 
5090B
385C
385B 
278-7286  115.31 ± 0.09 mm (4.540 ± 0.004 inch) 
203-4862 115.31 ± 0.09 mm (4.540 ± 0.004 inch) 
352-3740 115.31 ± 0.09 mm (4.540 ± 0.004 inch) 
5080
375 
138-8388  115.31 ± 0.09 mm (4.540 ± 0.004 inch) 
390F
390D 
278-7286  115.31 ± 0.09 mm (4.540 ± 0.004 inch) 
352-3740 115.31 ± 0.09 mm (4.540 ± 0.004 inch) 
374F
374D 
278-7284  115.31 ± 0.09 mm (4.540 ± 0.004 inch) 
352-3735 115.31 ± 0.09 mm (4.540 ± 0.004 inch) 
365C
365B
MD6640
MD6540C
MD6540 
278-7284  115.31 ± 0.09 mm (4.540 ± 0.004 inch) 
141-2697 115.31 ± 0.09 mm (4.540 ± 0.004 inch) 
352-3735 115.31 ± 0.09 mm (4.540 ± 0.004 inch) 
352F  383-1612  105.28 ± 0.09 mm (4.14487 ± 0.003 inch) 
350  138-8389  105.25 ± 0.09 mm (4.144 ± 0.004 inch) 
345D
345C
345B 
337-6894  105.28 ± 0.09 mm (4.145 ± 0.004 inch) 
558GF
349D
345D
345C
345B
330D
330C
568
MD6420C
MD6420B
MD6420 
264-9821  105.28 ± 0.09 mm (4.145 ± 0.004 inch) 
330D
340F 
235-8536  85.365 ± 0.090 mm (3.3608 ± 0.0035 inch) 
340D2
340D
336E
336D2
336D
330D
330C
330B
330
328D
MD6290
MD6240 
136-3847  85.365 ± 0.090 mm (3.3608 ± 0.0035 inch) 
538B  384-5482  65.15 ± 0.09 mm (2.56496 ± 0.004 inch) 
329D
325D
325C
325B
325
324D
323D
322C
320C
320B
320 
115-7471  75.31 ± 0.09 mm (2.965 ± 0.004 inch) 
325D  235-8534  75.31 ± 0.09 mm (2.965 ± 0.004 inch) 
326D
324D
322C
322B
322 
115-4931  70.065 ± 0.090 mm (2.7585± 0.0035 inch) 
325F
323F
323D2
323D
321D
321C
320F
320E
320D2
320D
320C
320B
320
319D
319C
318F
318E
318D2
318D
318C
318B
317B
317
3116F
315D
315C
315B
315
313D2
MD5150C
MD5150
MD5075C
MD5075 
262-4781  65.15 ± 0.09 mm (2.565± 0.004 inch) 
318C
318B
317B
317 
115-4926  65.15 ± 0.09 mm (2.565± 0.004 inch) 
314E
314D
314C
313F
313D
313C
313B
312F
312E
312D2
312D
312C
312B
312
311F
311D
311C
311B
311 
6I-6590  55.114 ± 0.068 mm (2.170 ± 0.003 inch) 
312D2  248-7151  105.28 ± 0.09 mm (4.15 ± 0.004 inch) 
308E
308D
308C
307D
307C
307B
307 
277-8668  40.112 ± 0.066 mm (1.5792 ± 0.0026 inch) 
308E2
307E2 
422-0868  50.114 ± 0.068 mm (1.973 ± 0.0027 inch) 
433-3881
307B
307 
115-6335  40.112 ± 0.066 mm (1.5792 ± 0.0026 inch) 

Track Feller Bunchers

Table 8
Installed Bearing Diameter 
Sales Model  Idler Assembly  Installed Bearing Diameter (M) 
552
551
TK752
TK751
541
532
TK732
521B
522B 
136-3847  85.365 ± 0.090 mm (3.3608 ± 0.0035 inch) 
TK741
TK722
TK721
522
521 
207-0472  75.31 ± 0.09 mm (2.965 ± 0.004 inch) 
TK711
511 
115-7471  75.31 ± 0.09 mm (2.965 ± 0.004 inch) 

Idler Dimensions

Note: The true center line must be kept on all idler rebuilds for proper rebuild procedures. All idler width dimensions are based off center line of the idler. Measure from machined retainer surface on hub to establish the true center line of hub.

Fabricated and Cast Idlers



Illustration 3g03710434
Fabricated Idler
(A) Width of Center Flange from Center Line of Idler
(B) Tread Width from Center Line of Idler
(C) Hub Face width from Center Line of Idler
(D) Diameter of Center Bore in Idler
(E) Diameter of Tread
(F) Height of Center Flange
(G) Diameter of Tread at 100% wear
(H) Radius at Base of Center Flange


Illustration 4g03710496
Cast Idler
(A) Width of Center Flange from Center Line of Idler
(B) Tread Width from Center Line of Idler
(C) Hub Face Flange from Center Line of Idler
(D) Diameter of Center Bore in Idler
(E) Diameter of Tread
(F) Height of Center Flange
(G) Diameter of Tread at 100% wear
(H) Radius at Base of Center Flange

Note: Cast Idler Dimensions for Tractors with Center Tread Idlers found in Tables 14, 15, and 16.

Track-Type Tractors with Elevated Sprocket

Table 9
Fabricated and Cast Idlers 
Sales Model  Idler No.  (A)  (B)  (C)  (D)  (E)  (F)  (G)  (H) 
D11T
D11R
D11N 
187-1007  75.0 mm (2.95 inch)  169.0 mm (6.65 inch)  201.0 mm (7.91 inch)  168.89 ± 0.04 mm (6.649 ± 0.002 inch)  892.0 mm (35.12 inch)  20.0 mm (0.79 inch)  860.0 mm (33.86 inch)  5.0 mm (0.20 inch) 
D10T
D10R
D10N 
9W-6284  66.5 mm (2.62 inch)  146.0 mm (5.75 inch)  163.0 mm (6.42 inch)  142.85 ± 0.04 mm (5.624± 0.002 inch)  766.0 mm (30.16 inch)  20.0 mm (0.79 inch)  734.0 mm (28.90 inch)  5.0 mm (0.20 inch) 
D10  6Y-0215  64.0 mm (2.52 inch)  143.0 mm (5.61 inch)  187.5 mm (7.38 inch)  168.89 ± 0.04 mm (6.649 ± 0.002 inch)  864.0 mm (34.02 inch)  20.0 mm (0.79 inch)  831.0 mm (32.72 inch)  5.0 mm (0.20 inch) 
D9T
D9R
D9N 
9W-4468  55.5 mm (2.19 inch)  128.5 mm (5.06 inch)  145.0 mm (5.71 inch)  133.32 ± 0.04 mm (5.249 ± 0.002 inch)  720.0 mm (28.35 inch)  20.0 mm (0.79 inch)  688.0 mm (27.09 inch)  5.0 mm (0.20 inch) 
D9L
589 
9W-4466  59.0 mm (2.32 inch)  132.0 mm (5.20 inch)  12.5 mm (0.49 inch)  142.85 ± 0.04 mm (5.624± 0.002 inch)  743.0 mm (29.25 inch)  20.0 mm (0.79 inch)  711.0 mm (27.99 inch)  5.0 mm (0.20 inch) 
D8T
D8R
D8N
587T
587R
583T
583R
PL83
PL87 
6Y-0552  48.5 mm (1.91 inch)  116.0 mm (4.57 inch)  125.0 mm (4.92 inch)  133.32 ± 0.04 mm (5.249 ± 0.002 inch)  620.0 mm (24.41 inch)  20.0 mm (0.79 inch)  588.0 mm (23.15 inch)  5.0 mm (0.20 inch) 
PL72  395-4269  47.5 mm (1.87 inch)  95.2 mm (3.748 inch)  99 mm (3.897 inch)  114.28 ± 0.04 mm (4.499 ± 0.00157 inch)  545 mm (21.46 inch)  24 mm (0.945 inch)  530 mm (20.86 inch)  5.0 mm (0.20 inch) 
D8T
D8R
D8N
D8L
578 
6Y-0555  48.5 mm (1.91 inch)  111.0 mm (4.37 inch)  125.0 mm (4.92 inch)  133.32 ± 0.04 mm (5.249 ± 0.002 inch)  698.0 mm (27.48 inch)  20.0 mm (0.79 inch)  666.0 mm (26.22 inch)  5.0 mm (0.20 inch) 
D7R
D7H 
192-0222  51.0 mm (2.01 inch)  102.0 mm (4.02 inch)  108.3 mm (4.26 inch)  133.32 ± 0.04 mm (5.249 ± 0.002 inch)  585.0 mm (23.03 inch)  20.0 mm (0.79 inch)  560.0 mm (22.05 inch)  5.0 mm (0.20 inch) 
D7R
D7H
572R 
192-0214  49.0 mm (1.93 inch)  100.0 mm (3.94 inch)  106.0 mm (4.17 inch)  133.32 ± 0.04 mm (5.249 ± 0.002 inch)  628.0 mm (24.72 inch)  20.0 mm (0.79 inch)  597.0 mm (23.50 inch)  5.0 mm (0.20 inch) 
192-0218 51.0 mm (2.01 inch)  102.0 mm (4.02 inch)  108.3 mm (4.26 inch)  133.32 ± 0.04 mm (5.249 ± 0.002 inch)  628.0 mm (24.72 inch)  20.0 mm (0.79 inch)  603.0 mm (23.74 inch)  5.0 mm (0.20 inch) 
195-9817 51.0 mm (2.01 inch)  102.0 mm (4.02 inch)  108.3 mm (4.26 inch)  133.32 ± 0.04 mm (5.249 ± 0.002 inch)  605.0 mm (23.82 inch)  20.0 mm (0.79 inch)  580.0 mm (22.83 inch)  5.0 mm (0.20 inch) 
D7E  192-0222  51.0 mm (2.01 inch)  102.0 mm (4.02 inch)  108.3 mm (4.26 inch)  133.32 ± 0.04 mm (5.249 ± 0.002 inch)  585.0 mm (23.03 inch)  20.0 mm (0.79 inch)  560.0 mm (22.05 inch)  5.0 mm (0.20 inch) 
D6T
D6R2
D6R
D6H 
202-4302  47.5 mm (1.87 inch)  95.2 mm (3.75 inch)  99.5 mm (3.92 inch)  114.28 ± 0.04 mm (4.50 ± 0.002 inch)  570.0 mm (22.44 inch)  24.0 mm (0.94 inch)  532.0 mm (20.94 inch)  5.0 mm (0.20 inch) 
253-2567 47.5 mm (1.87 inch)  95.2 mm (3.75 inch)  99.5 mm (3.92 inch)  114.28 ± 0.04 mm (4.50 ± 0.002 inch)  570.0 mm (22.44 inch)  24.0 mm (0.94 inch)  532.0 mm (20.94 inch)  5.0 mm (0.20 inch) 
202-4294 47.5 mm (1.87 inch)  95.2 mm (3.75 inch)  99.5 mm (3.92 inch)  114.28 ± 0.04 mm (4.50 ± 0.002 inch)  545.0 mm (21.46 inch)  24.0 mm (0.94 inch)  507.0 mm (19.96 inch)  5.0 mm (0.20 inch) 
253-2566 47.5 mm (1.87 inch)  95.2 mm (3.75 inch)  99.5 mm (3.92 inch)  114.28 ± 0.04 mm (4.50 ± 0.002 inch)  545.0 mm (21.46 inch)  24.0 mm (0.94 inch)  507.0 mm (19.96 inch)  5.0 mm (0.20 inch) 
D6N
D6M
D5R
D5H 
190-1548  42.0 mm (1.65 inch)  86.4 mm (3.40 inch)  94.8 mm (3.73 inch)  102.00 ± 0.04 mm (4.016 ± 0.002 inch)  540.0 mm (21.26 inch)  24.0 mm (0.94 inch)  509.0 mm (20.04 inch)  5.0 mm (0.20 inch) 
253-2568 42.0 mm (1.65 inch)  86.4 mm (3.40 inch)  94.5 mm (3.72 inch)  101.20 ± 0.04 mm (3.984 ± 0.002 inch)  540.0 mm (21.26 inch)  24.0 mm (0.94 inch)  509.0 mm (20.04 inch)  5.0 mm (0.20 inch) 
D5N
D5M
D4H
561N
561M
561H 
190-1542  34.25 mm (1.348 inch)  73.25 mm (2.884 inch)  84.35 mm (3.321 inch)  96.00 ± 0.04 mm (3.780 ± 0.002 inch)  500.0 mm (19.69 inch)  20.0 mm (0.79 inch)  471.0 mm (18.54 inch)  5.0 mm (0.20 inch) 
193-5930 34.0 mm (1.34 inch)  73.2 mm (2.88 inch)  84.0 mm (3.31 inch)  96.00 ± 0.04 mm (3.780 ± 0.002 inch)  500.0 mm (19.69 inch)  20.0 mm (0.79 inch)  471.0 mm (18.54 inch)  5.0 mm (0.20 inch) 
253-2569 34.0 mm (1.34 inch)  73.2 mm (2.88 inch)  84.0 mm (3.31 inch)  96.00 ± 0.04 mm (3.780 ± 0.002 inch)  500.0 mm (19.69 inch)  20.0 mm (0.79 inch)  471.0 mm (18.54 inch)  5.0 mm (0.20 inch) 
D5N
D5M
D4H 
193-5929  34.0 mm (1.34 inch)  73.2 mm (2.88 inch)  84.0 mm (3.31 inch)  96.00 ± 0.04 mm (3.780 ± 0.002 inch)  475.0 mm (18.70 inch)  20.0 mm (0.79 inch)  446.0 mm (17.56 inch)  5.0 mm (0.20 inch) 
190-1538 34.25 mm (1.35 inch)  73.25 mm (2.89 inch)  84.35 mm (3.321 inch)  96.00 ± 0.04 mm (3.780 ± 0.002 inch)  475.0 mm (18.70 inch)  20.0 mm (0.79 inch)  446.0 mm (17.56 inch)  5.0 mm (0.20 inch) 

Skidders

Table 10
Fabricated and Cast Idlers 
Sales Model  Idler Number  (A)  (B)  (C)  (D)  (E)  (F)  (G)  (H) 
D5H
517 
8E-4009  42.0 mm (1.65 inch)  79.5 mm (3.13 inch)  100.9 mm (3.97 inch)  114.28 ± 0.04 mm (4.499 ± 0.002 inch)  540.0 mm (21.26 inch)  19.0 mm (0.75 inch)  519.0 mm (20.43 inch)  5.0 mm (0.20 inch) 
D5H  190-1548  42.0 mm (1.65 inch)  86.4 mm (3.40 inch)  94.8 mm (3.73 inch)  102.00 ± 0.04 mm (4.016 ± 0.002 inch)  540.0 mm (21.26 inch)  24.0 mm (0.94 inch)  509.0 mm (20.04 inch)  5.0 mm (0.20 inch) 
253-2568 42.0 mm (1.65 inch)  86.4 mm (3.40 inch)  94.5 mm (3.72 inch)  101.20 ± 0.04 mm (3.984 ± 0.002 inch)  540.0 mm (21.26 inch)  24.0 mm (0.94 inch)  509.0 mm (20.04 inch)  5.0 mm (0.20 inch) 
D4H  193-5929  34.0 mm (1.34 inch)  73.2 mm (2.88 inch)  84.0 mm (3.31 inch)  96.00 ± 0.04 mm (3.780 ± 0.002 inch)  475.0 mm (18.70 inch)  20.0 mm (0.79 inch)  446.0 mm (17.56 inch)  5.0 mm (0.20 inch) 
190-1538 34.3 mm (1.35 inch)  73.3 mm (2.88 inch)  84.4 mm (3.32 inch)  96.00 ± 0.04 mm (3.780 ± 0.002 inch)  475.0 mm (18.70 inch)  20.0 mm (0.79 inch)  446.0 mm (17.56 inch)  5.0 mm (0.20 inch) 
527  202-4294  47.5 mm (1.87 inch)  95.2 mm (3.75 inch)  99.5 mm (3.92 inch)  114.28 ± 0.04 mm (4.500 ± 0.002 inch)  545.0 mm (21.46 inch)  24.0 mm (0.94 inch)  507.0 mm (19.96 inch)  5.0 mm (0.20 inch) 
253-2566 47.5 mm (1.87 inch)  95.2 mm (3.75 inch)  99.5 mm (3.92 inch)  114.28 ± 0.04 mm (4.499 ± 0.002 inch)  545.0 mm (21.46 inch)  24.0 mm (0.94 inch)  507.0 mm (19.96 inch)  5.0 mm (0.20 inch) 

Track-Type Tractors with Low Sprocket

Table 11
Fabricated and Cast Idlers 
Sales Model  Idler Number  (A)  (B)  (C)  (D)  (E)  (F)  (G)  (H) 
D9
594 
5S-1532  64.65 mm (2.545 inch)  133.35 mm (5.250 inch)  146.05 mm (5.750 inch)  142.85 ± 0.04 mm (5.624 ± 0.002 inch)  889.0 mm (35.00 inch)  22.5 mm (0.89 inch)  870.0 mm (34.25 inch)  5.0 mm (0.20 inch) 
D8
583 
188-5610  60.35 mm (2.376 inch)  128.85 mm (5.073 inch)  127.25 mm (5.010 inch)  133.32 ± 0.04 mm (5.249 ± 0.002 inch)  812.8 mm (32.00 inch)  24.0 mm (0.94 inch)  793.8 mm (31.25 inch)  5.0 mm (0.20 inch) 
D7
572
571 
9H-8489  51.0 mm (2.01 inch)  102.0 mm (4.02 inch)  105.6 mm (4.16 inch)  117.45 ± 0.04 mm (4.624 ± 0.002 inch)  752.0 mm (29.61 inch)  20.0 mm (0.79 inch)  727.0 mm (28.62 inch)  5.0 mm (0.20 inch) 
1S-8186 51.0 mm (2.01 inch)  102.0 mm (4.02 inch)  105.6 mm (4.16 inch)  117.45 ± 0.04 mm (4.624 ± 0.002 inch)  752.0 mm (29.61 inch)  20.0 mm (0.79 inch)  727.0 mm (28.62 inch)  5.0 mm (0.20 inch) 
277-4492 51.0 mm (2.01 inch)  102.0 mm (4.02 inch)  105.6 mm (4.16 inch)  117.45 ± 0.04 mm (4.624 ± 0.002 inch)  752.0 mm (29.61 inch)  20.0 mm (0.79 inch)  727.0 mm (28.62 inch)  5.0 mm (0.20 inch) 
D6K
PL61 
362-8316  43.5 mm (1.71 inch)  82.5 mm (3.24 inch)  79.93 mm (3.14 inch)  79.93 mm (3.14 inch)  506.0 mm (19.92 inch)  24 mm (0.94 inch)  475 mm (18.70 inch)  5.0 mm (0.20 inch) 
D6  5M-5009  47.4 mm (1.87 inch)  94.1 mm (3.70 inch)  102.1 mm (4.02 inch)  114.28 ± 0.04 mm (4.499 ± 0.002 inch)  676.0 mm (26.61 inch)  23.0 mm (0.91 inch)  664.0 mm (26.14 inch)  3.0 mm (0.12 inch) 
7T-4562 47.0 mm (1.85 inch)  93.5 mm (3.68 inch)  109.4 mm (4.31 inch)  114.28 ± 0.04 mm (4.499 ± 0.002 inch)  676.0 mm (26.61 inch)  20.0 mm (0.79 inch)  651.0 mm (25.63 inch)  5.0 mm (0.20 inch) 
D6
D5
561 
8S-2560  42.0 mm (1.65 inch)  79.5 mm (3.12 inch)  81.5 mm (3.21 inch)  107.92 ± 0.04 mm (4.249 ± 0.002 inch)  641.5 mm (25.26 inch)  19.0 mm (0.75 inch)  620.5 mm (24.43 inch)  5.0 mm (0.20 inch) 
1M-3121 42.0 mm (1.65 inch)  79.5 mm (3.12 inch)  81.5 mm (3.21 inch)  107.92 ± 0.04 mm (4.249 ± 0.002 inch)  584.0 mm (22.99 inch)  19.0 mm (0.75 inch)  563.0 mm (22.17 inch)  5.0 mm (0.20 inch) 
D5
561 
7T-3501  42.0 mm (1.65 inch)  79.5 mm (3.12 inch)  81.5 mm (3.21 inch)  107.92 ± 0.04 mm (4.249 ± 0.002 inch)  641.0 mm (25.24 inch)  19.0 mm (0.75 inch)  620.0 mm (24.41 inch)  5.0 mm (0.20 inch) 
D5G
D5C 
9U-9065  34.24 mm (1.348 inch)  67.45 mm (2.656 inch)  69.85 mm (2.750 inch)  101.57 ± 0.03 mm (3.999 ± 0.001 inch)  555.8 mm (21.88 inch)  17.0 mm (0.67 inch)  537.8 mm (21.17 inch)  6.0 mm (0.24 inch) 
D5K  261-5730  34.25 mm (1.349 inch)  67.55 mm (2.659 inch)  70.05 mm (2.758 inch)  91.520 ± 0.015 mm (3.6031 ± 0.0006 inch)  555.8 mm (21.88 inch)  17.0 mm (0.67 inch)  537.8 mm (21.17 inch)  6.0 mm (0.24 inch) 
D5K2  398-9342  26.75 mm (1.05315 inch)  57 mm (2.24409 inch)  57.75 mm (2.27362 inch)  79.38 ± 0.03 mm (3.12519 ± 0.00118 inch)  515 mm (20.27555 inch)  32 mm (1.25984 inch)  498 mm (19.60626 inch)  6 mm (0.23622 inch) 
399-0736 34.25 mm (1.34842 inch)  67.5 ± 0.1 mm (2.65748 ± 0.00394 inch)  65 mm (2.55905 inch)  91.52 ± 0.03 mm (3.60314 ± 0.00118 inch)  555.8 ± 1.5 mm (21.88185 ± 0.05906 inch)  17 mm (0.66929 inch)  537.8 ± 1.5 mm (21.17319 ± 0.05906 inch)  6 mm (0.23622 inch) 
D4  1M-8867  34.15 mm (1.345 inch)  67.45 mm (2.656 inch)  70.75 mm (2.785 inch)  101.57 ± 0.04 mm (3.999 ± 0.002 inch)  616.0 mm (24.25 inch)  17.2 mm (0.68 inch)  603.0 mm (23.74 inch)  5.0 mm (0.20 inch) 
3K-2866 34.15 mm (1.345 inch)  67.45 mm (2.656 inch)  70.75 mm (2.785 inch)  101.57 ± 0.04 mm (3.999 ± 0.002 inch)  555.8 mm (21.88 inch)  17.2 mm (0.68 inch)  542.8 mm (21.37 inch)  5.0 mm (0.20 inch) 
D4K
D3K
D4G
D3G
D4C
D4B
D3C
D3B
D3 
9N-4173  26.75 mm (1.053 inch)  55.75 mm (2.195 inch)  55.75 mm (2.195 inch)  79.38 ± 0.03 mm (3.125 ± 0.002 inch)  515.0 mm (20.28 inch)  16.0 mm (0.63 inch)  505.0 mm (19.88 inch)  6.0 mm (0.24 inch) 
D4C
D4B
D3C
D3B
D3 
8E-7341  26.75 mm (1.053 inch)  56.95 mm (2.242 inch)  63.25 mm (2.490 inch)  56.921 ± 0.025 mm (2.2410 ± 0.0010 inch)  515.0 mm (20.28 inch)  16.0 mm (0.63 inch)  505.0 mm (19.88 inch)  6.0 mm (0.24 inch) 
D3K2
D4K2 
398-9342  26.75 mm (1.05315 inch)  57 mm (2.24409 inch)  57.75 mm (2.27362 inch)  79.38 ± 0.03 mm (3.12519 ± 0.00118 inch)  515 mm (20.27555 inch)  32 mm (1.25984 inch)  498 mm (19.60626 inch)  6 mm (0.23622 inch) 

Track-Type Loaders

Table 12
Fabricated and Cast Idlers 
Sales Model  Idler Number  (A)  (B)  (C)  (D)  (E)  (F)  (G)  (H) 
983  188-5610  60.35 mm (2.376 inch)  123.85 mm (4.876 inch)  127.25 mm (5.010 inch)  133.32 ± 0.04 mm (5.249 ± 0.002 inch)  812.8 mm (32.00 inch)  24.0 mm (0.94 inch)  793.8 mm (31.25 inch)  5.0 mm (0.20 inch) 
977  1S-8186  51.0 mm (2.01 inch)  102.0 mm (4.02 inch)  105.6 mm (4.16 inch)  117.45 ± 0.04 mm (4.624 ± 0.002 inch)  752.0 mm (29.61 inch)  20.0 mm (0.79 inch)  727.0 mm (28.62 inch)  5.0 mm (0.20 inch) 
9H-8489 51.0 mm (2.01 inch)  102.0 mm (4.02 inch)  105.6 mm (4.16 inch)  117.45 ± 0.04 mm (4.624 ± 0.002 inch)  752.0 mm (29.61 inch)  20.0 mm (0.79 inch)  727.0 mm (28.62 inch)  5.0 mm (0.20 inch) 
977
973C
973 
277-4492  51.0 mm (2.01 inch)  102.0 mm (4.02 inch)  105.6 mm (4.16 inch)  117.45 ± 0.04 mm (4.624 ± 0.002 inch)  752.0 mm (29.61 inch)  20.0 mm (0.79 inch)  727.0 mm (28.62 inch)  5.0 mm (0.20 inch) 
963K
963D
963C
963B
963
955 
7T-4562  47.5 mm (1.87 inch)  93.5 mm (3.68 inch)  109.4 mm (4.31 inch)  114.28 ± 0.04 mm (4.499 ± 0.002 inch)  676.0 mm (26.61 inch)  20.0 mm (0.79 inch)  651.0 mm (25.63 inch)  5.0 mm (0.20 inch) 
955  5M-5009  47.4 mm (1.87 inch)  93.4 mm (3.68 inch)  101.4 mm (3.10 inch)  114.28 ± 0.04 mm (4.499 ± 0.002 inch)  676.0 mm (26.61 inch)  23.0 mm (0.91 inch)  664.0 mm (26.14 inch)  3.0 mm (0.12 inch) 
955
951 
8S-2560  42.0 mm (1.65 inch)  79.5 mm (3.13 inch)  81.5 mm (3.21 inch)  107.92 ± 0.04 mm (4.249 ± 0.002 inch)  641.5 mm (25.26 inch)  19.0 mm (0.75 inch)  620.5 mm (24.43 inch)  5.0 mm (0.20 inch) 
953D
953C
953B
953
951 
7T-3501  42.0 mm (1.65 inch)  79.5 mm (3.13 inch)  81.5 mm (3.21 inch)  107.92 ± 0.04 mm (4.249 ± 0.002 inch)  641.0 mm (25.24 inch)  19.0 mm (0.75 inch)  620.0 mm (24.41 inch)  5.0 mm (0.20 inch) 
943  7T-1315  34.25 mm (1.348 inch)  67.45 mm (2.656 inch)  71.35 mm (2.809 inch)  101.57 ± 0.04 mm (3.999 ± 0.002 inch)  588.0 mm (23.15 inch)  17.0 mm (0.67 inch)  570.0 mm (22.44 inch)  5.0 mm (0.20 inch) 
941  1M-8867  34.15 mm (1.344 inch)  67.45 mm (2.656 inch)  71.25 mm (2.805 inch)  101.57 ± 0.04 mm (3.999 ± 0.002 inch)  616.0 mm (24.25 inch)  17.0 mm (0.67 inch)  603.0 mm (23.74 inch)  5.0 mm (0.20 inch) 
939C
939 
9U-9065  34.25 mm (1.349 inch)  67.45 mm (2.656 inch)  69.85 mm (2.750 inch)  101.57 ± 0.03 mm (3.999 ± 0.001 inch)  555.8 mm (21.88 inch)  18.0 mm (0.71 inch)  537.8 mm (21.17 inch)  6.0 mm (0.24 inch) 
935C
935B
933C
933
931C
931B
931 
8E-7341  26.75 mm (1.053 inch)  56.95 mm (2.242 inch)  63.25 mm (2.490 inch)  56.921 ± 0.025 mm (2.2410 ± 0.0010 inch)  515.0 mm (20.28 inch)  16.0 mm (0.63 inch)  505.0 mm (19.88 inch)  6.0 mm (0.24 inch) 
9N-4173 26.75 mm (1.053 inch)  55.75 mm (2.195 inch)  55.75 mm (2.195 inch)  79.38 ± 0.03 mm (3.125 ± 0.001 inch)  515.0 mm (20.28 inch)  16.0 mm (0.63 inch)  505.0 mm (19.88 inch)  6.0 mm (0.24 inch) 

Asphalt Pavers

Table 13
Cast Idlers 
Sales Model  Idler Number  (A)  (B)  (C)  (D)  (E)  (F)  (G)  (H) 
AP655F  262-4104  20.07 ± 0.3 mm (0.79016 ± 0.01181 inch)  57.15 ± 0.3 mm (2.25000 ± 0.01181 inch)  88.9 mm (3.49999 inch)  107.95 ± 0.3 mm (4.24999 ± 0.01181 inch)  304.8 ± 0.5 mm (11.99998 ± 0.01969 inch)  15.875 ± 0.25 mm (0.62500 ± 0.00984 inch)  298.5 mm (11.75195 inch)  2 mm (0.07874 inch) 

Excavators and Front Shovels

Table 14
Fabricated and Cast Idlers 
Sales Model  Idler Number  (A)  (B)  (C)  (D)  (E)  (F)  (G)  (H) 
6020B  471-7758  118.5 mm (4.66 inch)  180 mm (7.086 inch)  185 mm (7.28 inch)  205 mm (8.071 inch)  1120 mm (44.094 inch)  35 mm (1.378 inch)  1092 mm (42.99 inch)  7 mm (0.276nch) 
6015B  430-4194  50.5 ± 0.5 mm (1.98819 ± 0.02 inch)  142.5 ± 1 mm (5.61023 ± 0.04 inch)  307 mm (12.09 inch)  166 ± 0.025 mm (6.53542 ± 0.001 inch)  892 mm (35.12 inch)  31 mm (1.22047 inch)  848 mm (33.38 inch)  5 mm (0.2 inch) 
5130B
5130 
218-5072  76.0 mm (2.10 inch)  168.5 mm (6.63 inch)  172.5 mm (6.80 inch)  186.000 ± 0.025 mm (7.3228 ± 0.0010 inch)  1068.0 mm (42.05 inch)  39.5 mm (1.56 inch)  1042.0 mm (41.02 inch)  5.0 mm (0.20 inch) 
5110B  173-3065  63.0 mm (2.48 inch)  142.5 mm (5.61 inch)  153.5 mm (6.04 inch)  166.000 ± 0.025 mm (6.5354 ± 0.0010 inch)  862.0 mm (33.94 inch)  30.0 mm (1.18 inch)  836.0 mm (32.91 inch)  5.0 mm (0.20 inch) 
5090
385C
385B 
202-6565  64.65 mm (2.545 inch)  133.35 mm (5.250 inch)  140.10 mm (5.516 inch)  122.155 ± 0.025 mm (4.8092 ± 0.0010 inch)  770.0 mm (30.31 inch)  22.4 mm (0.88 inch)  746.0 mm (29.37 inch)  5.0 mm (0.20 inch) 
278-7285 64.65 mm (2.545 inch)  133.35 mm (5.250 inch)  140.10 mm (5.516 inch)  122.155 ± 0.025 mm (4.8092 ± 0.0010 inch)  770.0 mm (30.31 inch)  22.4 mm (0.88 inch)  746.0 mm (29.37 inch)  5.0 mm (0.20 inch) 
5080
375 
138-8386  64.65 mm (2.545 inch)  133.35 mm (5.250 inch)  140.10 mm (5.516 inch)  122.155 ± 0.025 mm (4.8092 ± 0.0010 inch)  770.0 mm (30.31 inch)  22.4 mm (0.88 inch)  746.0 mm (29.37 inch)  5.0 mm (0.20 inch) 
390F
390D 
278-7285  64.65 mm (2.545 inch)  133.35 mm (5.250 inch)  140.10 mm (5.516 inch)  122.155 ± 0.025 mm (4.8092 ± 0.0010 inch)  770.0 mm (30.31 inch)  22.4 mm (0.88 inch)  746.0 mm (29.37 inch)  5.0 mm (0.20 inch) 
352-3742 64.65 mm (2.545 inch)  133.35 mm (5.250 inch)  140.10 mm (5.516 inch)  122.155 ± 0.025 mm (4.8092 ± 0.0010 inch)  770.0 mm (30.31 inch)  22 mm (0.9 inch)  746.4 mm (29.38 inch)  5.0 mm (0.20 inch) 
374F
374D
MD6640
MD6540C
MD6540 
352-3736  64.65 mm (2.545 inch)  133.35 mm (5.250 inch)  140.10 mm (5.516 inch)  122.155 ± 0.025 mm (4.8092 ± 0.0010 inch)  770.0 mm (30.31 inch)  20.0 mm (0.79 inch)  706.4 mm (27.81 inch)  5.0 mm (0.20 inch) 
365C
365B 
141-2698  64.65 mm (2.545 inch)  133.35 mm (5.250 inch)  140.10 mm (5.516 inch)  122.155 ± 0.025 mm (4.8092 ± 0.0010 inch)  730.0 mm (28.74 inch)  22.4 mm (0.88 inch)  706.0 mm (27.80 inch)  5.0 mm (0.20 inch) 
278-7283 64.65 mm (2.545 inch)  133.35 mm (5.250 inch)  140.10 mm (5.516 inch)  122.155 ± 0.025 mm (4.8092 ± 0.0010 inch)  730.0 mm (28.74 inch)  22.4 mm (0.88 inch)  706.0 mm (27.80 inch)  5.0 mm (0.20 inch) 
352F  500-1286  51 mm (2.00787 inch)  102 mm (4.01574 inch)  87.6 ± 2 mm (3.44881 ± 0.07874 inch)  112.125 ± 0.025 mm (4.41436 ± 0.00098 inch)  635 mm (24.99995 inch)  40 mm (1.57480 inch)  604 mm (23.77948 inch)  5.0 mm (0.20 inch) 
350  138-8387  60.35 mm (2.376 inch)  123.85 mm (4.876 inch)  136.15 mm (5.360 inch)  112.125 ± 0.025 mm (4.4144 ± 0.0010 inch)  690.0 mm (27.17 inch)  24.0 mm (0.94 inch)  672.0 mm (26.46 inch)  5.0 mm (0.20 inch) 
349D
345D
345C
345B
330D
330C
312D2
568
MD6420C
MD6420B
MD6420 
264-9820  60.0 mm (2.36 inch)  111.0 mm (4.37 inch)  125.4 mm (4.94 inch)  112.125 ± 0.025 mm (4.4144 ± 0.0010 inch)  635.0 mm (25.00 inch)  20.0 mm (0.79 inch)  617.0 mm (24.29 inch)  5.0 mm (0.20 inch) 
345D
345C
345B 
332-8911  51.0 mm (2.01 inch)  102.0 mm (4.02 inch)  116.4 mm (4.58 inch)  112.125 ± 0.025 mm (4.4144 ± 0.0010 inch)  635.0 mm (25.00 inch)  20.0 mm (0.79 inch)  617.0 mm (24.29 inch)  5.0 mm (0.20 inch) 
330D  235-8537  51.0 mm (2.01 inch)  102.0 mm (4.02 inch)  116.4 mm (4.58 inch)  92.210 ± 0.025 mm (3.6303 ± 0.0010 inch)  647.0 mm (25.47 inch)  20.0 mm (0.79 inch)  629.0 mm (24.76 inch)  5.0 mm (0.20 inch) 
340D2 340D
336E
336D2 
136-3847  51.0 mm (2.01 inch)  102.0 mm (4.02 inch)  115.1 mm (4.53 inch)  92.21 ± 0.025 mm (3.63 ± 0.001 inch)  635 mm (25 inch)  20.0 mm (0.79 inch)  617 mm (24.29 inch)  5.0 mm (0.20 inch) 
336D2
336D
330D
330C
330B
330
328D 
112-9948  51.0 mm (2.01 inch)  102.0 mm (4.02 inch)  116.4 mm (4.58 inch)  92.210 ± 0.025 mm (3.6303 ± 0.0010 inch)  635.0 mm (25.00 inch)  20.0 mm (0.79 inch)  617.0 mm (24.29 inch)  5.0 mm (0.20 inch) 
329D
325D
325C
325B
325
324D
323D
322C
320C
320B
320 
115-7472  47.5 mm (1.87 inch)  93.5 mm (3.68 inch)  112.9 mm (4.44 inch)  82.155 ± 0.025 mm (3.2344 ± 0.0010 inch)  540.0 mm (21.26 inch)  20.0 mm (0.79 inch)  522.0 mm (20.55 inch)  5.0 mm (0.20 inch) 
325D  235-8532  47.5 mm (1.87 inch)  94.0 mm (3.70 inch)  113.4 mm (4.46 inch)  82.155 ± 0.025 mm (3.2344 ± 0.0010 inch)  552.0 mm (21.73 inch)  20.0 mm (0.79 inch)  534.0 mm (21.02 inch)  5.0 mm (0.20 inch) 
326D
324D
322C
322B
322 
115-4932  42.0 mm (1.65 inch)  75.9 mm (2.99 inch)  89.0 mm (3.50 inch)  77.980 ± 0.025 mm (3.0701 ± 0.0010 inch)  507.0 mm (19.96 inch)  19.0 mm (0.75 inch)  494.0 mm (19.45 inch)  5.0 mm (0.20 inch) 
323D2
323D
321D
321C
320E
320D2
320D
320C
320B
320
319D
319C
318E
318D2
318D
318C
318B
317B
317
315D
315C
315B
315
314E
313D2
MD5150C
MD5150
MD5075C
MD5075 
262-4782  42.0 mm (1.65 inch)  75.9 mm (2.99 inch)  87.5 mm (3.44 inch)  72.015 ± 0.025 mm (2.8352 ± 0.0010 inch)  507.0 mm (19.96 inch)  19.0 mm (0.75 inch)  494.0 mm (19.45 inch)  5.0 mm (0.20 inch) 
319D
MD6290
MD6240 
136-3847  51.0 mm (2.01 inch)  102.0 mm (4.02 inch)  115.5 mm (4.55 inch)  92.21 ± 0.025 mm (3.63 ± 0.001 inch)  635 mm (25 inch)  20.0 mm (0.79 inch)  617 mm (24.29129 inch)  5.0 mm (0.20 inch) 
318C
318B
317B
317 
115-4927  42.0 mm (1.65 inch)  79.5 mm (3.13 inch)  91.1 mm (3.59 inch)  72.015 ± 0.025 mm (2.8352 ± 0.0010 inch)  507.0 mm (19.96 inch)  19.0 mm (0.75 inch)  494.0 mm (19.45 inch)  5.0 mm (0.20 inch) 
323D2
320F
318F
316F
315D L
MD5150C
MD5150
MD5075C
MD5075 
262-4781  42.0 mm (1.65 inch)  79.5 mm (3.13 inch)  90.0 mm (3.54 inch)  72.015 ± 0.025 mm (2.8352 ± 0.00098 inch)  507.0 mm (19.96 inch)  19.0 mm (0.75 inch)  494.0 mm (19.45 inch)  5.0 mm (0.20 inch) 
314E
314D
314C
313F
313C
313B
312F
312D2
312D
312C
312B
312
311F
311D
311C
311B
311 
6I-6471  34.25 mm (1.35 inch)  67.5 mm (2.66 inch)  80.0 mm (3.15 inch)  59.015 ± 0.015 mm (2.3234 ± 0.0006 inch)  456.0 mm (17.95 inch)  18.0 mm (0.71 inch)  443.0 mm (17.44 inch)  5.0 mm (0.20 inch) 
307E2 308E2  422-0869  21.5 mm (0.84646 inch)  51 mm (2.00787 inch)  44.5 mm (1.75196 inch)  54.015 ± 0.015 mm (2.12657 ± 0.00059 inch)  452 mm (17.79524 inch)  52 mm (2.04724 inch)  437 mm (17.20469 inch)  4 mm (0.15748 inch) 
294-5349 21.5 mm (0.84646 inch)  51 mm (2.00787 inch)  44.5 mm (1.75196 inch)  54.015 ± 0.015 mm (2.12657 ± 0.00059 inch)  400 mm (15.74800 inch)  52 mm (2.04724 inch)  387 mm (15.23619 inch)  4 mm (0.15748 inch) 
308E
308D
308C
307D
307C
307B
307 
277-8669  21.5 mm (0.85 inch)  51.0 mm (2.01 inch)  57.5 mm (2.26 inch)  44.0 ± 0.01 mm (1.7 ± 0.0005 inch)  400.0 mm (15.75 inch)  26.0 mm (1.02 inch)  390.0 mm (15.35 inch)  4.0 mm (0.16 inch) 
307B
307 
115-6334  21.5 mm (0.85 inch)  51.0 mm (2.01 inch)  57.5 mm (2.26 inch)  44.0 ± 0.01 mm (1.8 ± 0.0005 inch)  400.0 mm (15.75 inch)  22.0 mm (0.87 inch)  390.0 mm (15.35 inch)  4.0 mm (0.16 inch) 

Track Feller Bunchers

Table 15
Fabricated and Cast Idlers 
Sales Model  Idler Number  (A)  (B)  (C)  (D)  (E)  (F)  (G)  (H) 
552
551
TK752
TK751
541
532
TK732
521B
522B 
112-9948  51.0 mm (2.01 inch)  102.0 mm (4.02 inch)  116.4 mm (4.58 inch)  92.210 ± 0.025 mm (3.6303 ± 0.0010 inch)  635.0 mm (25.00 inch)  20.0 mm (0.79 inch)  617.0 mm (24.29 inch)  5.0 mm (0.20 inch) 
538B
538 
384-7239  39.2 mm (1.54330 inch)  79.5 ± 1 mm (3.12992 ± 0.03937 inch)  65.15 ± 0.09 mm (2.56496 ± 0.00354 inch)  507 mm (19.96059 inch)  19 mm (0.74803 inch)  482 mm (18.97634 inch)  5.0 mm (0.20 inch) 
522
521
TK741
TK722
TK721 
207-0471  47.5 mm (1.87 inch)  95.2 mm (3.75 inch)  68.1 mm (2.68 inch)  82.155 ± 0.025 mm (3.2344 ± 0.0010 inch)  570.0 mm (22.44 inch)  24.0 mm (0.94 inch)  532.0 mm (20.94 inch)  5.0 mm (0.20 inch) 
511
TK711 
115-7472  47.5 mm (1.87 inch)  93.5 mm (3.68 inch)  112.9 mm (4.44 inch)  82.155 ± 0.025 mm (3.2344 ± 0.0010 inch)  540.0 mm (21.26 inch)  20.0 mm (0.79 inch)  522.0 mm (20.55 inch)  5.0 mm (0.20 inch) 

Center Tread Idlers

Note: The true center line must be kept on all idler rebuilds for proper rebuild procedures. All idler width dimensions are based off center line of the idler. Measure from machined retainer surface on hub to establish the true center line of hub.



Illustration 5g03710558
Center Tread Idler
(C) Tread Face to Hub Face from Center Line of Idler
(D) Diameter of Center Bore in Idler
(E) Diameter of Tread
(G) Diameter of Tread at 100% Wear
(J) Inner Tread Width from Center Line of Idler
(K) Outer Tread Width from Center Line of Idler
(L) Angle of Center Tread

Track-Type Tractors with Elevated Sprocket

Table 16
Center Tread Idlers 
Sales Model  Idler Number  (C)  (D)  (E)  (G)  (J)  (K)  (L) 
D7R
D7H
572R 
248-3274  108.05 mm (4.254 inch)  133.32 ± 0.04 mm (5.249 ± 0.002 inch)  702.0 mm (27.64 inch)  670.0 mm (26.38 inch)  42.5 mm (1.67 inch)  47.65 mm (1.876 inch)  7.0° 
D6R
D6H 
159-3659  99.5 mm (3.92 inch)  114.28 ± 0.04 mm (4.499 ± 0.002 inch)  652.0 mm (25.67 inch)  622.0 mm (24.49 inch)  37.5 mm (1.48 inch)  42.25 mm (1.663 inch)  7.0° 
D6T
D6H
D6R 
283-1607  99.53 mm (3.919 inch)  114.28 ± 0.04 mm (4.500 ± 0.002 inch)  640.0 mm (25.20 inch)  610.0 mm (24.02 inch)  35.0 mm (1.38 inch)  42.5 mm (1.67 inch)  15.0° 
321-8475 99.52 mm (3.918 inch)  114.28 ± 0.04 mm (4.500 ± 0.002 inch)  586.0 mm (23.07082 inch)  557.0 mm (21.93 inch)  31.5 mm (1.24016 inch)  49.45 mm (1.947 inch)  15.0° 
D6N
D6M
D5R
D5M 
290-0739  94.5 mm (3.72 inch)  102.00 ± 0.04 mm (4.016 ± 0.002 inch)  621.0 mm (24.45 inch)  591.0 mm (23.27 inch)  30.5 mm (1.20 inch)  33.0 mm (1.30 inch)  15.0° 
D5N
D5M
D4H 
290-0751  84.0 mm (3.31 inch)  96.00 ± 0.04 mm (3.78 ± 0.002 inch)  544.0 mm (21.42 inch)  514.0 mm (20.24 inch)  26.0 mm (1.02 inch)  33.5 mm (1.32 inch)  15.0° 

Track-Type Tractors with Low Sprocket

Table 17
Center Tread Idlers 
Sales Model  Idler Number  (C)  (D)  (E)  (G)  (J)  (K)  (L) 
D5K  261-4468  64.93 mm (2.556 inch)  91.520 ± 0.015 mm (3.6031 ± 0.0006 inch)  619.5 mm (24.39 inch)  589.5 mm (23.21 inch)  28.0 mm (1.10 inch)  34.7 mm (1.37 inch)  15.0° 
D5G
D5C 
250-0369  99.63 mm (3.922 inch)  91.520 ± 0.015 mm (3.6031 ± 0.0006 inch)  626.0 mm (24.65 inch)  596.0 mm (23.46 inch)  28.0 mm (1.10 inch)  34.7 mm (1.37 inch)  15.0° 
D4K
D3K 
261-4467  67.15 mm (2.644 inch)  79.38 ± 0.03 mm (3.125 ± 0.001 inch)  574.5 mm (22.6 inch)  544.5 mm (21.44 inch)  21.0 mm (0.83 inch)  27.7 mm (1.09 inch)  15.0° 
D4G
D3G
D4C
D3C 
249-7629  57.35 mm (2.258 inch)  79.38 ± 0.03 mm (3.125 ± 0.001 inch)  598.0 mm (23.54 inch)  568.0 mm (22.36 inch)  21.0 mm (0.83 inch)  27.7 mm (1.09 inch)  15.0° 
D3K2
D4K2 
261-4473  57.15 mm (2.25000 inch)  79.38 ± 0.03 mm (3.12519 ± 0.00118 inch)  555.88 mm (21.88500 inch)  21 mm (0.82677 inch)  35 mm (1.37795 inch)  ()  15° 

Track-Type Loaders

Table 18
Center Tread Idlers 
Sales Model  Idler Number  (C)  (D)  (E)  (G)  (J)  (K)  (L) 
963C
963B
963 
228-4231  86.06 mm (3.39 inch)  114.25 ± 0.04 mm (4.498 ± 0.002 inch)  738.5 mm (29.07 inch)  708.5 mm (27.89 inch)  35.0 mm (1.38 inch)  42.5 mm (1.67 inch)  15.0° 
953C
953B 
228-4230  76.1 mm (2.10 inch)  107.92 ± 0.04 mm (4.249 ± 0.002 inch)  699.0 mm (27.52 inch)  669.0 mm (26.34 inch)  30.5 mm (1.20inch)  38.0 mm (1.50inch)  15.0° 

Caterpillar Information System:

G3520B Engine Model View Illustrations
G3408C and G3412C Engines Air/Fuel Ratio Control - NO<SUB>X</SUB> Feedback
14L Motor Grader Relief Valve (Main) - Assemble
14L Motor Grader Relief Valve (Main) - Disassemble
Installation Guide for the PL1000E Communications ECM{7610} Installation Guide for the PL1000E Communications ECM{7610}
G3500 Engines Vibration Damper
G3520B Engines Vibration Damper
GENSET, SR4, SR4 HV, SR4B and SR4B HV Electric Power Generation, 3126, 3176B, 3176C, 3196, 3408E, 3412C, 3412E, 3508, 3508B, 3512, 3512B, 3516, 3516B and G3616 Engines, 3406E GEN SET Generator Set, 3406E IND, 3408C IND and 3456 IND Industrial Engines Customer Communication Module
G3520B Engine Belts - Inspect/Adjust/Replace
3500B Engines Radiator Core - Install
A New Turbocharger is Now Available{1000, 1052, 5510} A New Turbocharger is Now Available{1000, 1052, 5510}
C13, C15, and C18 Tier 4 Final Engines Cylinder Liner
TH31 Well Servicing Transmissions Transfer Gears - Disassemble
2007/09/24 Improved Software that Helps to Conserve Ether is Available {1901, 1902, 7620}
TH31 Well Servicing Transmissions Transfer Gears - Assemble
Installation Guide for the 256-7511 PL1000T Communication ECM{7606, 7610} Installation Guide for the 256-7511 PL1000T Communication ECM{7606, 7610}
2007/09/24 O-ring Aids in Engine Break-in {1251, 1290}
2007/09/01 O-ring Aids in Engine Break-in {1251, 1290}
2007/10/01 Matched Receiver Firmware for AccuGrade Dual GPS Systems {7010, 7620}
G3520B Engines Fuel Lines
2007/10/01 Improved Fuel Transfer Pump {1258, 1260}
G3520B Engines Fuel Lines
Recommendations for Battery Charging and Temperatures for Machines and Generator Sets{1401, 751B} Recommendations for Battery Charging and Temperatures for Machines and Generator Sets{1401, 751B}
2007/10/01 The Dipstick for Certain OEM Transmissions Has Been Improved {3005, 3081}
Back to top
The names Caterpillar, John Deere, JD, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
CH-Part.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only.