CARRIER GP-DIFFERENTIAL 3201138 - Caterpillar

Maintenance Section
Inspection/Cleaning
Inspect all components of the bench before each daily use. Replace all damage or worn parts before use.
Make sure that all informational and warning films are clean and readable. Replace damaged films.
Keep the bench and additional tooling clean and free of dirt, oil, and debris. Clean the bench using a non-solvent based cleaning solution.
Store the assembled bench, upper and lower bench together, in a clean, dry indoor location.
Store additional tooling in a clean, dry indoor location.Service Parts
Top View
Illustration 7 g02828379
Counterclockwise Rotation ShownSide View
Illustration 8 g02828380
Counterclockwise Rotation ShownValve Assembly
Illustration 9 g02828381
Table 8
Service Parts    
Item     Part No.     Description    
(1)     NEEG2689     Torque/Pressure Chart Film    
(4)     128-4077     Cylinder Rod End    
(5)     127-8459     Hydraulic Cylinder    
(7, 9)     127-8458     Bench Group    
(10)     128-4075     Hex Shaft Assembly    
(11)     127-8468     Reaction Bar Assembly    
(12)     127-8463     Spanner Socket    
127-8464 Spanner Socket    
127-8465 Spanner Socket    
199-6557 Spanner Socket    
292-8544 Spanner Socket    
FT2982 Spanner Socket    
(13)     131-7410     Cylinder Retract Pressure Relief Valve1    
(14)     8T-0859     Pressure Gauge    
(15)     131-7409     Pressure Reducing Valve    
(16)     131-7410     Cylinder Extend Pressure Relief Valve2    
(17)     7X-0487     Hydraulic Fitting    
-     127-8460     Mounting Adapter Ring3    
127-8461 Mounting Adapter Ring3    
190-0110 Mounting Adapter Ring3    
194-3885 Mounting Adapter Ring3    
FT2983 Reaction Plate3    
1Replacement Relief Valve (13) Set to
6894 kPa (1000.0 psi).
2Replacement Relief Valve (16) Set to
20684 kPa (3000.0 psi).
3Not Shown.    Hydraulic Schematic
Illustration 10 g02828396
(1) Hydraulic Valve Body (2) Hydraulic Cylinders (3) Hydraulic Fittings (4) Pressure Gauge (5) Pressure Reducing Valve - Adjustable: 172 to 20684 kPa (25.0 to 3000.0 psi) (6) Cylinder Retract Pressure Relief Valve - Set to 6895 kPa (1000.0 psi) (7) Cylinder Extend Pressure Relief Valve - Set to 20684 kPa (3000.0 psi) (8) Internal Check Valve