JAW GP-SHEAR 3236112 - Caterpillar

Introduction
When testing and adjusting the transmission and power train, move the machine to an area clear of obstructions, with safe exhaust ventilation for the exhausts. Sudden movement of the machine or release of oil under pressure can cause injury to persons on or near the machine. To prevent possible injury, do the procedure that follows before testing and adjusting the transmission and power train.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Dispose of all fluids according to local regulations and mandates.
The following procedure is used in order to test the charge pressure for the transmission.Required Tools
Illustration 1 g01089423
Illustration 2 g01623868
Table 1
Tool Item Part Number Description Qty
A A1 8T-0856 Pressure Gauge
(0 to 6,000 kPa (0 to 870 psi)) 1
A2 6V-3989 Fitting 1
A3 6V-4143 Quick Connect Coupler 2
A4 177-7860 Hose As
(3.0 m (10 ft)) 1
B 198-4240 Digital Pressure Indicator Gp
B1 198-4234 Digital Indicator 1
B2 198-4238 Pressure Sensor Gp
(0 to 3,440 kPa (0 to 5000 psi)) 1
B3 198-4236 Adapter Cable As 1
D 6V-3965 Fitting (TEST) 1 Machine Preparation
Reference: Before you begin the test, refer to Troubleshooting, "Machine Preparation for Troubleshooting".
Operate the machine until the transmission oil is at an operating temperature of 51 °C (124 °F).
Stop the machine. Engage the parking brake and turn off the engine.
Illustration 3 g02149271
View of the right rear of the machine without the frame rail
(D) Fitting (test)
Attach the tooling (D).
Attach Tooling (A) or (B) to Tooling (D). Test Procedure
Start the engine. Set the throttle control to high idle. Turn the differential lock to the ON position. Refer to Table 2 for the correct transmission oil pressure.
Table 2
Transmission Oil Pressure
NEUTRAL position at low idle NEUTRAL position at high idle
2750 70 kPa (400 10 psi) 3150 150 kPa (455 22 psi)
Operate the engine at low idle and repeat Step 1.
Remove the test equipment.