Bench Test Procedure for a 770G and 772G Off-Highway Truck Transmission{3030, 3073} Caterpillar


Bench Test Procedure for a 770G and 772G Off-Highway Truck Transmission{3030, 3073}

Usage:

770G ECM
Off-Highway Truck/Tractor:
770G (S/N: KDH1-UP; ECM1-UP; ECX1-UP)
772G (S/N: LTS1-UP; KEX1-UP)

Introduction

Table 1
Revision     Summary of Changes in REHS3624    
01     Standardized.    

© 2015 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 special instruction contains the necessary information that is required to bench test a specific transmission arrangement. Refer to Table 2 for the correct arrangements. Bench testing the transmission ensures correct assembly and operation of the component. Rotating a transmission provides the most conclusive evaluation. Testing allows the dealer to ensure that the transmission will operate properly in the machine. The specifications in this guideline are specific to bench testing the component. Every effort has been made in order 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 guideline 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. In order to address an urgent need, use the following resources to communicate your request to Caterpillar Repair Process Engineering:

  • Cat Dealer Techinical Communicator

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Table 2
Machine Model     Transmission Arrangement    
770G     303-9464    
772G     322-1545, 326-4095    

Canceled Part Numbers and Replaced Part Numbers

This document may include 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.

Important Safety Information




Illustration 1g02139237

Follow all safety warnings. Most accidents that involve product operation, maintenance, or repair are caused by failure to observe safety warnings. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs. Personnel must be properly trained in order to perform maintenance, repair, or operate any machine. Safety precautions and warnings are provided this instruction and on Caterpillar products. These warnings should be observed before performing any procedures. Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The warnings in this publication and on the product are not all inclusive.

The hazards are identified by the "Safety Alert Symbol" which is followed by a "Signal Word" such as "DANGER", "WARNING, or" "CAUTION". The "WARNING" Safety Alert Symbol is shown in illustration below.




Illustration 2g00008666

This safety alert symbol means:

Pay Attention!

Become Alert!

Your Safety is Involved.

The message that appears under the safety alert symbol explains the hazard.

Operations that may cause product damage are identified by "NOTICE" labels on the product and in this publication.

Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The safety information in this document and the safety information on the machine are not all inclusive. Determine that the tools, procedures, work methods, and operating techniques are safe. Determine that the operation, lubrication, maintenance, and repair procedures will not damage the machine. Also, determine that the operation, lubrication, maintenance, and repair procedures will not make the machine unsafe.

The information, the specifications, and the illustrations that exist in this guideline are based on information which was available at the time of publication. The specifications, torques, pressures, measurements, adjustments, illustrations, and other items can change at any time. These changes can affect the service that is given to the product. Obtain the complete, most current information before you start any job. Caterpillar dealers can supply the most current information.

Collecting the Test Data

Data from each transmission arrangement is collected and stored. Averages from each transmission arrangement are often used in order to compare values on portions of transmission tests. Always compare data that is collected from the same transmission arrangement that is being tested. Averages for the last 20 transmission arrangements should be maintained.

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

Personal injury or death can result from escaping fluid under pressure.

Escaping fluid under pressure, even a very small pin-hole size leak, can penetrate body tissue and cause serious injury and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.

Always use a board or cardboard when checking for a leak.

----------------------

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

Hot oil and components can cause personal injury.

Do not allow hot oil or components to contact skin.

----------------------

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

Personal injury or death can result from not following the proper procedures.

To avoid the possibility of injury or death, follow the established procedure.

----------------------

Tools Needed

Note: Pressures will be sensitive to tooling setup. The diameter of the hose, the diameter of a fitting, and additional filtering can affect pressure. The required tools that are listed in Table 3 were used to develop this test procedure.

Table 3
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1U-9584     Rail As     2    
4C-9998 Bracket     2    
9U-6001 Crossmember     1    
1D-4614 Bolt (3/4-10X5.0 inch)     4    
5P-8248 Hard Washer     4    
2J-3506 Full Nut     4    
1U-9585 Block Gp     1    
B     1U-5798     Drive Adapter Gp     1    
C     4C-4701     Spindle Adapter     1    
2J-5245 Bolt (3/8-16X1.25 inch)     4    
3B-4506 Lockwasher     4    
D     1U-5999     Spindle Gp     1    
0S-1587 Bolt (1/2-13X1.75 inch)     4    
3B-4508 Lockwasher     4    
E     1U-6721     Adapter (Drive)     1    
F     1U-9131     Drive Adapter (Key) (1)     1    
G     1U-9359     Drive Adapter (2)     1    
H     439-3940     Link Bracket As     2    
1U-9722 Load Binder As (Ratchet Type)     3    
J     4C-4898     Cover (Transmission Test)     1    
K     9U-7444     Adapter     1    
7M-8485 O-Ring Seal     1    
L     FT-2974     Adapter (Overflow)     1    
0S-1594 Bolt (3/8-16X1 inch)     3    
5M-2894 Hard Washer     3    
M     6V-3137     Magnetic Base (Photo Pickup)     1    
N     235-4764     Adapter     1    
8C-5212 O-Ring Seal     1    
140-5978 Fitting     1    
1U-9879 Fitting (Camlock fitting)     1    
0T-0573 Bolt (3/8-16X2.75 inch)     4    
5M-2894 Hard Washer     4    
AA     9U-7444     Adapter (Flange)     1    
1U-8301 Fitting (Flange)     1    
1P-4577 Half Flange     2    
8C-9024 Fitting As (Plain)     1    
6V-3965 Fitting As (Quick Disconnect)     1    
3J-1907 O-Ring Seal     1    
0S-1588 Bolt (3/8-16X1.25 inch)     4    
5M-2894 Hard Washer     4    
P     9U-7445     Adapter     1    
1U-8301 Fitting     1    
1P-4578 Half Flange     2    
8C-9024 Fitting As (Plain)     1    
6V-3965 Fitting As (Quick Disconnect)     1    
3J-1907 O-Ring Seal     1    
1D-4707 Bolt (7/16-14X2.25 inch)     4    
5P-8244 Washer     4    
Q     9U-7446     Adapter     1    
1U-8304 Fitting     1    
1P-4579 Half Flange     2    
8C-9024 Fitting As (Plain)     1    
6V-3965 Fitting As (Quick Disconnect)     1    
3J-1907 O-Ring Seal     1    
0S-1585 Bolt (1/2-13X1.50 inch)     4    
5P-8245 Hard Washer     4    
R     9U-7446     Adapter     1    
1U-8304 Fitting     1    
1P-4579 Half Flange     2    
8C-9024 Fitting As (Plain)     1    
6V-3965 Fitting As (Quick Disconnect)     1    
3J-1907 O-Ring Seal     1    
1B-2886 Bolt (1/2-13X3.75 inch)     4    
5P-8245 Hard Washer     4    
S      (3)     Fitting     1    
3B-7721 Reducer Bushing     1    
8T-3613 Fitting As     1    
T     8T-0855     Pressure Gauge (0 to 4,000 kPa (0 to 580 psi))     10    
6V-4144 Coupler     10    
U     8T-0854     Pressure Gauge (0 to 1,000 kPa (0 to 145 psi))     1    
6V-4144 Coupler     1    
V     8T-0862     Pressure Gauge (-100 to 500 kPa (-15 to 72 psi))     1    
6V-4144 Coupler     1    
W     9U-7500     Transmission Analyzer Tool Gp     1    
OR
277-2362 Transmission Analyzer III Gp     1    
306-0397 Extension Cable     1    
1U-9482 Adapter Cable As     1    
232-1065 Adapter Cable As     3    
X     146-4080     Digital Multimeter     1    
5P-5677 Electrical Wire     1    
155-2270 Connecting Plug Kit     1    
186-3736 Connector Socket     2    
Y     9U-7400     Multitach Tool Gp     1    
211-1774 Adapter Cable As (Speed Sensor)     2    
Z     120-6843     Ball or Gate Valve     1    
8C-9024 Nipple (Quick Disconnect)     1    
8C-9025 Coupler (Quick Disconnect)     1    
3B-7749 Nipple (Close)     1    
( 1 ) This drive adapter is used with the small drive shaft.
( 2 ) This drive adapter is used with the large drive shaft.
( 3 ) Parker 8-3/8 AOEG

FT Drawings




Illustration 3g03866789

FT-2974

(1) Plate (6.35x 177.8x 190.4)

(2) Pipe Nipple (3 inch NPT)

(3) Pipe Elbow (3 inch NPT)

(4) Nipple (3 inch NPT/3 inch ID hose)

(5) Clamp (Punch-LOK P18-S)

(6) Hose (3 inch ID)

Installation Procedure




    Illustration 4g03868418

  1. Install Tooling (A) on the test bench.



    Illustration 5g00959585

  1. Use a hoist to install the transmission on the test bench. The weight of the transmission is 1385 kg (3050 lb).



    Illustration 6g00959586

  1. Use a hoist to install Tooling (B) on the torque converter. The weight of Tooling (B) is 24.5 kg (54 lb).



    Illustration 7g00959588

  1. Use a hoist to install Tooling (C) to the transmission case. The weight of Tooling (C) is 39 kg (86 lb).



    Illustration 8g00959590

    Note: Refer to Special Instruction, SEHS8763, "Assembly and Operation of 1U-5999 Spindle Group Used for Testing Transmissions on Hydraulic Test Bench" for additional information.

  1. Use a hoist to install Tooling (D) on Tooling (C). The weight of Tooling (D) is 121 kg (267 lb).



    Illustration 9g00959592

  1. Tighten the collet on Tooling (D) to connect Tooling (D) to Tooling (B) .



    Illustration 10g00959598

  1. Install Tooling (E) to the input shaft of Tooling (D) .



    Illustration 11g00959599

  1. Install Tooling (F) to the input shaft of Tooling (E) .

    Note: Tooling (F) will adapt to the small drive shaft. If you are using the large drive shaft, install Tooling (G) on Tooling (F) .




    Illustration 12g00959600

  1. Align the transmission with the input drive shaft.

  1. Connect the input drive shaft to Tooling (F) .



    Illustration 13g00959602

  1. Install the drive shaft guard.



    Illustration 14g03802221

  1. Tighten all four castle nuts and jack bolts.



    Illustration 15g02457316

  1. Install Tooling (H) to the input and output end of the transmission.



    Illustration 16g02722212

  1. Install Tooling (J) after removing transmission cover.



    Illustration 17g00959627

  1. Remove plug (4) .



    Illustration 18g00959629

  1. Install Tooling (K) .

    Note: Tooling (K) will activate the drain valve, allowing the oil to drain into the test bench.




    Illustration 19g00959631

  1. Remove cover (5) .



    Illustration 20g00959634

  1. Install Tooling (L) .



    Illustration 21g00959636

  1. Remove cover (6) .

  1. Remove the magnetic filter.



    Illustration 22g00959639

  1. Install Tooling (M) .

    Note: Tooling (M) will block the oil flow to the oil pan.




    Illustration 23g00959642

  1. Install Tooling (N) .



    Illustration 24g03868035

  1. Install Tooling (AA) .



    Illustration 25g02479956

  1. Install Tooling (P) .



    Illustration 26g00959649

  1. Install Tooling (Q) .



    Illustration 27g02722207

  1. Install tooling (Z) .



    Illustration 28g02480179

  1. Install Tooling (R) .



    Illustration 29g00959656

  1. Cover Tooling (C). Use a suitable clean cover.



    Illustration 30g00959658

  1. Connect hose assembly (7) from the gravity feed pump supply to Tooling (N) .



    Illustration 31g03868039

    Outlet for the Transmission Oil Pump

  1. Connect hose assembly (8) from Tooling (AA) to the No. 1 flow meter inlet.



    Illustration 32g02722203

  1. Connect hose assembly (9) from the outlet of the No. 1 flow meter to Tooling (P) .



    Illustration 33g02722202

    Converter Outlet

  1. Connect hose assembly (10) from Tooling (Z) to the No. 2 flow meter inlet.



    Illustration 34g02480398

    Inlet for the Transmission Lubrication Oil

  1. Connect hose assembly (11) from the outlet of the No. 2 flow meter to Tooling (R) .



    Illustration 35g00959672

  1. Connect lube line (12) from the test bench to Tooling (D). Maintain an oil pressure of 275 kPa (40 psi).



    Illustration 36g02722199

    (13) Torque converter inlet

    (14) Main Relief

    (15) No. 5 clutch

    (16) No. 3 clutch

    (17) No. 4 clutch

    (18) Lockup clutch

    (19) No. 1 clutch

    (20) No. 2 clutch

    (21) No. 7 clutch

    (22) No. 6 clutch

    Note: If you are using individual pressure gauges to measure the pressures, refer to Table 3 for the correct pressure gauges.

  1. Connect a pressure gauge to pressure taps (13), (14), (15), (16), (17), (18), (19), (20), (21), and (22) .



    Illustration 37g00959682

    Transmission Lubrication Pressure Tap

  1. Connect a pressure gauge to Tooling (R) .



    Illustration 38g02722198

  1. Connect Tooling (W) to harness connector.



    Illustration 39g00959686

  1. Connect Tooling (W) to a suitable location.



    Illustration 40g00877510

    Tooling (W)




    Illustration 41g01457869

    Tooling (W)

  1. Connect Tooling (W) to a power source. Refer to Tool Operating Manual, NEHS0644 or Tool Operating Manual, NEHS0996 for the correct operating instructions.

Test Procedure

TA3 Navigation

  1. Select "Generic ICM Xmsn".

  1. Select "7 Speed 2 Reverse ICM-24V".

Harness Test (TA3 only)

  1. Make sure that the harness is properly connected.

  1. Use Tooling (W) to perform the harness test.

  1. Record the values in Table 6.

    Note: Do not continue testing until Harness Test passes.

Solenoid Test (TA2 only)

  1. Make sure that the harness is properly connected.

  1. Use Tooling (W) to perform the solenoid test.

  1. Record the values in Table 6.

    Note: Do not continue testing until Solenoid Test passes.

Start Checks

    Note: Refer to Testing and Adjusting, UENR1123, "770G and 772G Off-Highway Truck Power Train" for the correct adjusting procedures.

  1. If you are using SAE 10W oil, warm the oil to 50 °C (125 °F). If you are using Mobil DTE11 oil, warm the oil to 34 °C (95 °F). Maintain this temperature for the duration of the test.



    Illustration 42g02720621

  1. With the transmission in the NEUTRAL position, rotate the input shaft in a counterclockwise direction. Adjust the input rotation to 600 ± 25 rpm.

  1. Shift the transmission through all directions and through all speed ranges to eliminate air from the transmission controls.

  1. Confirm the correct clutch engagement with Table 4.

    Table 4
    Clutch Engagement Check    
    Gear     Cl 1     Cl 2     Cl 3     Cl 4     Cl 5     Cl 6     Cl 7    
    N     X                            
    R1     X                         X    
    R2             X                 X    
    F1         X                 X        
    F2     X                     X        
    F3             X             X        
    F4     X                 X            
    F5             X         X            
    F6     X             X                
    F7             X     X                

  1. Check for lockup or excessive drag in all ranges.

  1. Adjust the input rotation to 0 rpm.

  1. Use the following procedure to test the transmission.

Speed Sensor Test




    Illustration 43g02722193

    Note: There is one input sensor to be tested.




    Illustration 44g02482001

    Note: There are two output speed sensors on rear end of transmission output shaft that must be tested and identified.

  1. Connect Tooling (X) to input speed sensor (25) .

  1. Use Tooling (X) to measure the resistance.

  1. Connect Tooling (X) to output speed sensor (26) .

  1. Use Tooling (X) to measure the resistance.

  1. Connect Tooling (X) to output speed sensor (27) .

  1. Use Tooling (X) to measure the resistance.

  1. Record the values in Table 8.

  1. Verify the test points with the values in Table 7.

Pump Flow Test

  1. Adjust the input rotation to 600 ± 25 rpm in the NEUTRAL position.

  1. Shift the transmission to the FORWARD 1 position.

  1. Record the pump supply flow in Table 9.

  1. Adjust the input rotation to 1950 ± 25 rpm.

  1. Record the pump supply flow in Table 9.

  1. Shift the transmission to the NEUTRAL position.

  1. Adjust the input rotation to 600 ± 25 rpm.

Main Relief Pressure

  1. Adjust the input rotation to 1950 ± 25 rpm in the NEUTRAL position.

  1. Check the pressure for the main relief valve. The correct pressure must be 3100 ± 70 kPa (450 ± 10 psi).

  1. Record the main relief pressure in Table 10.

  1. Adjust the input rotation to 600 ± 25 rpm in the NEUTRAL position.

Torque Converter Inlet Relief Valve

  1. Adjust the input rotation to 600 ± 25 rpm in the NEUTRAL position.

  1. Shift the transmission to the FORWARD 1 position.

  1. Adjust the input rotation until the pump supply flow is 38 ± 4 L/min (10 ± 1 US gpm). Maintain this flow during this check.

  1. Momentarily block the lube flow.

  1. The converter inlet pressure must be 930 ± 100 kPa (135 ± 15 psi).

  1. Open the lube flow.

  1. Shift the transmission to the NEUTRAL position.

  1. Record the value in Table 11.

Lube Circuit Check

  1. Adjust the input rotation to 600 ± 25 rpm in the NEUTRAL position.

  1. Shift the transmission to the FORWARD 2 position.

  1. Adjust the input rotation until the lube flow is 115 ± 4 L/min (30 ± 1 US gpm). Maintain this flow during this check.

  1. The lube pressure must be within 7 kPa (1 psi) of the average for this arrangement. Reference is 124 ± 21 kPa (18 ± 3 psi).

  1. Shift the transmission to the NEUTRAL position.

  1. Adjust the input rotation to 600 ± 25 rpm.

  1. Record the value in Table 12.

Lube Pressure Test

  1. Adjust the input rotation to 600 ± 25 rpm in the NEUTRAL position.

  1. Shift the transmission to the FORWARD 1 position.

  1. Record the lube pressure in Table 13.

  1. Record the lube flow in Table 13.

  1. Shift the transmission to the NEUTRAL position.

  1. Shift the transmission to the REVERSE 2 position.

  1. Record the lube pressure in Table 13.

  1. Record the lube flow in Table 13.

  1. Adjust the input rotation to 1950 ± 25 rpm.

  1. Record the lube pressure in Table 14.

  1. Record the lube flow in Table 14.

  1. Adjust the input rotation to 600 ± 25 rpm.

  1. Shift the transmission to the NEUTRAL position.

  1. Shift the transmission to the FORWARD 1 position.

  1. Adjust the input rotation to 1950 ± 25 rpm.

  1. Record the lube pressure in Table 14.

  1. Record the lube flow in Table 14.

  1. The lube pressure must be minimum 15 kPa (2 psi).

  1. The lube flow must be minimum 39 L/min (10 US gpm).

  1. Shift the transmission through positions FORWARD 2, FORWARD 3, FORWARD 4, FORWARD 5, FORWARD 6, and FORWARD 7. Repeat Steps 16 through 17 for each gear range.

  1. The lube pressure must be minimum 186 kPa (27 psi).

  1. The lube flow must be minimum 148 L/min (39 US gpm).

  1. Adjust the input rotation to 600 ± 25 rpm.

  1. Shift the transmission to the NEUTRAL position.

  1. Stop the input rotation.

Final Pressure Checks (High Idle)

  1. Adjust the input rotation to 600 ± 25 rpm with the transmission in the NEUTRAL position.

  1. Adjust the input rotation to 1950 ± 25 rpm.

  1. Record the clutch pressure in Table 16.

  1. Adjust the input rotation to 600 ± 25 rpm.

  1. Shift the transmission through positions REVERSE 1 and REVERSE 2. Repeat Steps 2 through 4 for each gear range.

  1. Shift the transmission to the NEUTRAL position.

  1. Adjust the input rotation to 1950 ± 25 rpm.

  1. Shift the transmission to the FORWARD 1 position.

  1. Record the clutch pressure in Table 16.

  1. Shift the transmission through positions FORWARD 2, FORWARD 3, FORWARD 4, FORWARD 5, FORWARD 6, and FORWARD 7. Record the clutch pressure for each gear range.

  1. Adjust the input rotation to 600 ± 25 rpm.

  1. Shift the transmission to the NEUTRAL position.

  1. Verify that the clutch pressures match the values in Table 15.

  1. Stop the input rotation.

ISO Particle Count

  1. Sample the test bench oil supply.

  1. Record the particle count in Table 17.

Transmission Bench Test Data Sheet

Table 5
CATERPILLAR     Transmission Bench Test Data Sheet     Test Date:_______    
Model:_______
Work Order:_______     Serial No.:_______    

Solenoid Test

Table 6
Solenoid Test     Solenoid 1     Solenoid 2     Solenoid 3    
________ ohms ________ ohms     ________ ohms    

Speed Sensor Test

Table 7
Speed Sensor Test    
Sensor     Resistance    
Minimum Maximum    
Transmission Output Speed Sensor "A"
   
750 Ω     1500 Ω    
Transmission Output Speed Sensor "B"
   
750 Ω     1500 Ω    
Input Speed
Sensor "C"
   
750 Ω     1500 Ω    

Table 8
Speed Sensor Test    
Sensor     Resistance    
Transmission Output Speed Sensor "A"
   
______________________ Ω    
Transmission Output Speed Sensor "B"
   
______________________ Ω    
Input Speed Sensor "C"
   
______________________ Ω    

Pump Flow Test

Table 9
Pump Flow Test     Gear Range FORWARD 1    
600 ± 25 1950 ± 25    

_______L/min (gpm)

_______L/min (gpm)    

Main Relief Pressure

Table 10
Main Relief Pressure     Input Speed (1950 ± 25 rpm)
Gear Range NEUTRAL    
_______kPa
_______(psi)    

Converter Inlet Relief Valve

Table 11
Converter Inlet Relief Valve     Pump Supply Flow
38 ± 4 L/min (10 ± 1 US gpm)
Gear Range FORWARD 1    
Converter Outlet Pressure     _______kPa _______(psi)    

Lube Circuit Check

Table 12
Lube Circuit Check     Gear Range FORWARD 2
Output Flow
114 ± 4 L/min (30 ± 1 US gpm)    
Average Lube Pressure Of Arrangement     _______kPa
_______(psi)    
Lube Pressure     _______kPa
_______(psi)    

Lube Pressure Check (Low Idle)

Table 13

Lube Pressure Check (Low Idle)
   
Input Speed (600 ± 25 rpm)    
Gear Range     Lube Pressure     Lube Flow    

REVERSE 2
   
_______kPa (psi)     _______L/min (US gpm)    

FORWARD 1
   
_______kPa (psi)     _______L/min (US gpm)    

Lube Pressure Check (High Idle)

Table 14

Lube Pressure Check (High Idle)
   
Input Speed (1950 ± 25 rpm)    
Gear Range     Lube Pressure     Lube Flow    

REVERSE 2
   
_______kPa (psi)     _______L/min (US gpm)    

FORWARD 1
   
_______kPa (psi)     _______L/min (US gpm)    

FORWARD 2
   
_______kPa (psi)     _______L/min (US gpm)    

FORWARD 3
   
_______kPa (psi)     _______L/min (US gpm)    

FORWARD 4
   
_______kPa (psi)     _______L/min (US gpm)    

FORWARD 5
   
_______kPa (psi)     _______L/min (US gpm)    

FORWARD 6
   
_______kPa (psi)     _______L/min (US gpm)    

FORWARD 7
   
_______kPa (psi)     _______L/min (US gpm)    

Final Pressure Checks (High Idle)

Table 15
Final Clutch Pressure (High Idle)    
Callout No.     "16"     "19"     "20"     "18"     "15"     "17"     "22"     "21"    
Clutch     No. 3 (1)     No. 1 (1)     No. 2 (1)     LUC (2)     No. 5 (1)     No. 4 (1)     No. 6 (1)     No. 7 (1)    
Speed Range     Engaged Clutches     Pressure    
R1     1 and 7        
3102 kPa (450 psi)    
                   
3102 kPa (450 psi)    
R2     3 and 7    
1930 kPa (280 psi)    
                       
3102 kPa (450 psi)    
N     1        
3102 kPa (450 psi)    
                       
1     2 and 6            
1999 kPa (290 psi)    

2082 kPa (302 psi)    
       
2999 kPa (435 psi)    
   
2     1 and 6        
3033 kPa (440 psi)    
       
2999 kPa (435 psi)    
   
3     3 and 6    
1930 kPa (280 psi)    
           
2999 kPa (435 psi)    
   
4     1 and 5        
3033 kPa (440 psi)    
   
2206 kPa (320 psi)
           
5     3 and 5    
1896 kPa (275 psi)    
       
2137 kPa (310 psi)
           
6     1 and 4        
3033 kPa (440 psi)    
   
1551 kPa (225 psi)    
       
7     3 and 4    
1896 kPa (275 psi)    
       
1551 kPa (225 psi)    
       
( 1 ) The tolerance is ± 207 kPa (± 30 psi).
( 2 ) The tolerance is ± 207 kPa (± 30 psi).

Table 16
Final Pressure Checks (High Idle)     Input Speed (1950 ± 25 rpm)    
Callout No.     16     19     20     18     15     17     22     21    
Clutch     3     1     2     LUC     5     4     6     7    
Gear Range     Active Clutches     Pressures    
R2     3     7                                    
R1     1     7                                    
N     1     -                                    
1     2     6                                    
2     1     6                                    
3     3     6                                    
4     1     5                                    
5     3     5                                    
6     1     4                                    
7     3     4                                    

ISO Particle Count

Table 17
ISO Particle Count     Sample the test bench oil supply.    
________/________Particle Count    

Table 18




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______________________________________
Supervisor
   

Caterpillar Information System:

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