FRAME AS- 2708851 - Caterpillar

Some machines are equipped with remote pressure taps for the power train system. The remote pressure taps are located on the right side of the machine to the right of the ladder.Test for the Lubrication Oil Pressure
Table 5
Transmission Pressure    
Pressure     Specification (High Idle)     Actual Pressure    
Lubrication Oil Pressure (Minimum)    
140 kPa (20 psi)        
Illustration 4 g00283697
Inlet for Transmission Lubrication OilThe inlet for transmission lubrication oil is located above the parking brake beneath the cab.
Illustration 5 g00925857
Inlet for Transmission Lubrication Oil (12) 6V-7946 Plate Assembly. (13) 1V-4249 Bolt .
Install the 6V-7946 Plate Assembly with the 1V-4249 Bolts .
Attach the correct hose to 6V-7946 Plate Assembly (12). Attach the opposite end of the hose to the 1U-5481 Pressure Gauge Group .
Start the engine and operate the engine at high idle. With the oil at normal operating temperature, the pressure reading must be within the values in Table 5.Test for the Transmission Oil Pump Pressure
Attach the correct hose to pressure tap (8) for the transmission oil pump pressure (P1). Attach the opposite end of the hose to the 1U-5481 Pressure Gauge Group .
Start the engine and operate the engine at high idle. With the oil at normal operating temperature, the pressure reading must be within the values in Table 6.Adjustment for the Transmission Oil Pump Pressure
The transmission relief valve (16) is located below the modulating valves.
Illustration 6 g00925862
If the transmission oil pump pressure at pressure tap (8) is not within the values in Table 6, adjust the spring of the transmission relief valve (16). Use the following procedure.
Remove cover (17) .
Turn adjustment screw (18) in the proper direction.Turning the adjustment screw clockwise increases pump pressure. Turning the adjustment screw counterclockwise decreases pump pressure. One full turn of the adjustment screw changes pump pressure 160 kPa (23 psi).
Install cover (17) .
Check the transmission oil pump pressure again at pressure tap (8). Make sure that the transmission oil pump pressure is within the value in Table 6.
Table 6
Transmission Pressure    
Pressure Tap     Specification (High Idle)     Actual Pressure    
Transmission Oil Pump Pressure (P1)    
2248 70 kPa (325 10 psi)        Test for the Torque Converter Inlet Pressure
Table 7
Transmission Pressure    
Pressure     Specification (High Idle)     Actual Pressure    
Torque Converter Inlet Pressure (P2)    
850 70 kPa (125 10 psi)        
Install the correct hose assembly from the 1U-5482 Pressure Adapter Group on pressure tap (7). Attach the opposite end of the hose assembly to the 0 to 2000 kPa (0 to 290 psi) pressure gauge in the 1U-5481 Pressure Gauge Group .
Start the engine and operate the engine at high idle. Observe the pressure gauge. With the oil at normal operating temperature, the torque converter inlet pressure must be within the specification in Table 7.Test for the Torque