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April 2002 |
UNDERCARRIAGE FOR NEW 385B AND 5090B EXCAVATORS
Caterpillar recently introduced the 385B and 5090B Excavators as a replacement for the 375 and 5080. The 5090B is the front shovel configuration of the 385B. With the 385B and 5090B Excavators having a common track pitch of 260.4 mm (common track pitch as 375), the basic undercarriage of these two machines is the same.
Features
- Common Track Roller Group as the 375 / 5080
- Common Track Shoe material as 375 / 5080 for Single and Double Grouser Shoes
- Larger track bolt for better shoe retention - the 385B / 5090B have a 30 mm bolt as compared to a 27 mm bolt on the 375 / 5080
- Increase press fit length on the track link 33% for increased pin retention-48.7 mm on the 385B / 5090B as compared to 36.7 mm on the 375 / 5080
Machine Serial Number
Machine Serial Number Manufacturing Source
385B BKF AKASHI
BKX AKASHI
CLS GOSSELIES
385B L ANS AURORA
BLY AKASHI
FDL GOSSELIES
5090B CLD GOSSELIES
Part Numbers
Refer to Attachment I for new part number information.
Custom Track Service (CTS)
When performing CTS on the new 385B / 5090B Excavators, refer to the wear charts in the 14th Edition of the CTS Handbook (Media Number PEK9400-02) on the pages listed below. If using the CTS 5.0 computer program, use undercarriage code C650.
Component Page
Track Links 530
Bushing Internal Wear 531
Bushing External Wear* See Attachment II
Track Shoes 533, 534
Idlers 535
Carrier Rollers 536
Track Rollers 537
* The Bushing External Wear chart has been updated since the publication of the CTS Handbook.
Retrofitability
The new link assemblies can be installed on the 375 and 5080 machines only as a track group (including new shoes). This is because of the larger track bolts on the 385B / 5090B.
Summary
Caterpillar is committed to providing superior undercarriage products that extend the customer?s undercarriage life and lower owning and operating expenses. The new Caterpillar? 385B / 5090B Excavators demonstrate this commitment by offering improved track shoe retention using larger track bolts and increased pin retention with the track link (to prevent pin walking) by increased press fit length.
LASchroeder TCRobertson
Undercarriage Marketing Division Undercarriage Marketing Division
Parts and Service Marketing Parts and Service Marketing
CV4111 ? Tel. (309) 675-3977 CV4111 ? Tel. (309) 675-7879
E-mail: Schroeder_Lindsey_A@CAT.com Robertson_Thomas@CAT.com
385B, 5090B TRACK
10.25? (260.4 mm) PITCH ? 30 mm Bolt
Qty Part No.
Link Assembly ? 47 Section 2 174-0215
Components Of Link Assembly
Track Links
RH Regular 47 174-0217
LH Regular 47 174-0218
Other Components
Pin 46 174-0219
Master Pin 1 174-0220
Bushing 46 8E-1886
Master Bushing 1 8E-1887
Washer 188 1S-4446
Spacer 2 1S-4445
Track Hardware*
Bolt 188 174-0221
Nut 188 174-0222
* Not part of the link assembly; required to assemble track group.
385B L TRACK
10.25? (260.4 mm) PITCH ? 30 mm BOLT
Qty Part No.
Link Assembly ? 51 Section 2 174-0216
Components of Link Assembly
Track Links
RH Regular 51 174-0217
LH Regular 51 174-0218
Other Components
Pin 50 174-0219
Master Pin 1 174-0220
Bushing 50 8E-1886
Master Bushing 1 8E-1887
Washer 204 1S-4446
Spacer 2 1S-4445
Track Hardware*
Bolt 204 174-0221
Nut 204 174-0222
* Not part of the link assembly; required to assemble track group.
385B, 5090B, 385B L TRACK SHOES
10.25? (260.4 mm) PITCH ? 30 mm BOLT
Type Width Part No.
Extreme Service 25.6? (650 mm) 174-0227
Double Grouser (TRAP)* 25.6? (650 mm) 174-0223
Double Grouser (TRAP)(CLIP)** 25.6? (650 mm) 174-0224
Double Grouser (TRAP)* 29.5? (750 mm) 174-0225
Double Grouser (TRAP)* 35.4? (900 mm) 174-0226
* Trapezoid Punched
** Trapezoid Punched, Clipped Grouser
385B, 5090B, 385B L SPROCKET
(Per Side) Qty Part No.
Sprocket 1 201-1704
Bolt 28 145-2970
Spacer 28 199-4501
385B, 5090B, 385B L TRACK ROLLERS
Groups (Per Machine) Qty Part No.
Single Flange (SF) * 185-5065
Components of Group
Roller Shell (SF) 1 185-5093
Bearing** 2 6Y-8127
Shaft 1 178-7292
End Collar 2 178-7291
Seal ? Duo ? Cone Group 2 176-5332
Toric Ring** 2 176-5334
Seal ? Shaft O-Ring 2 2H-3934
Plug 1 9W-2146
Dowel 2 178-7540
Mounting Hardware***
Bolt 4 107-3953
Washer 4 9X-8258
* The 385B / 5090B use 16 track rollers, the 385B L uses 18 track rollers.
** Component of preceding assembly or group; quantity shown per assembly or group.
*** Not included in roller group; quantity shown is required to mount each roller group.
385B, 5090B, 385B L IDLERS
Qty Part No.
Idler Group (Per Machine) 2 194-1157
Components of Group
Idler Assembly 1 203-4862
Bearing* 2 6Y-7599
Plug* 1 7H-3171
Shaft 1 202-4902
Bearing Blocks 2 194-1156
Seal ? Duo ? Cone Group 2 171-5825
Toric Ring* 2 171-5714
Pin 2 194-1155
Dowel 2 194-1162
Plug 2 102-0883
Seal ? Shaft O-Ring 2 2H-3928
* Component of preceding assembly or group; quantity shown per assembly or group.
385B, 5090B, 385B L CARRIER ROLLERS
Qty Part No.
Group (Per Machine) 6 175-3274
Components of Group
Roller Assembly 1 6Y-8169
Bearing* 1 6Y-8171
Bearing* 1 6Y-8172
Shaft Assembly 1 176-3241
Retainer 1 6Y-9339
Thrust Washer 1 6Y-8176
Cover 1 6Y-8177
Bolt 5 8T-8441
Seal ? Duo ? Cone Group 1 9W-2201
Toric Ring* 2 096-4255
Seal ? Cover 1 4H-9105
Plug 1 7H-3171
Mounting Hardware**
Bolt 6 7X-2584
* Component of preceding assembly or group; quantity shown per assembly or group.
** Not included in roller group; quantity shown is required to mount each roller.
385B, 5090B, 385B L CENTER GUIDING GUARDS
(Per Machine) Qty Part No.
Guard Assembly 2 176-2108
Bolt (30M) 8 8C-8723
Spacer 8 148-3111
385B, 5090B, 385B L END GUIDING GUARDS
(Per Machine) Qty Part No.
Guard Assembly 4 189-3987*
Bolt (30M) 16 8C-8723
Spacer 16 148-3111
* Mounting Position ? Front Number 2 Roller for 385B / 5090B, 385B L
Mounting Position ? Rear Number 7 Roller for 385B / 5090B
Mounting Position ? Rear Number 8 Roller for 385B L
385B FULL LENGTH TRACK ROLLER GUARDS
(To be used with Frame Assemblies 176-2222/23)
(Per Machine) Qty Part No.
Guard Assembly 4 174-8500
Guard Assembly 4 174-8501
Pipe 16 176-2146
Bolt (30M) 16 176-7524
Washer 32 9X-8258
Support Assembly 16 101-2160
Bolt (30M) 32 8C-8723
Spacer 32 148-3111
BUSHING EXTERNAL WEAR
385B, 5090B
Caliper Ultrasonic
Inches mm % Worn Inches mm
3.39 (86.1) 0 0.55 (14.0)
3.38 (85.9) 9 0.54 (13.7)
3.37 (85.6) 18 0.53 (13.5)
3.36 (85.3) 27 0.52 (13.2)
3.35 (85.1) 36 0.51 (13.0)
3.34 (84.8) 45 0.50 (12.7)
3.33 (84.6) 54 0.49 (12.4)
3.32 (84.3) 63 0.48 (12.2)
3.31 (84.1) 72 0.47 (11.9)
3.30 (83.8) 81 0.46 (11.7)
3.29 (83.6) 88 0.45 (11.4)
3.28 (83.3) 92 0.44 (11.2)
3.27 (83.1) 96 0.43 (10.9)
3.26 (82.8) 100 0.42 (10.7)
3.25 (82.6) 104 0.41 (10.4)
3.24 (82.3) 108 0.40 (10.2)
3.23 (82.0) 112 0.39 (9.9)
3.22 (81.8) 116 0.38 (9.7)
3.21 (81.5) 120 0.37 (9.4)
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