FILTER AS-FUEL 1R0763 - Caterpillar

Table 2
950H Accumulator Precharge Pressure/Temperature Relationship for a Typical Ride Control Accumulator with a Precharge of
3270 kPa (475 psi)    
Temperature     Pressure (1)    
−7°C (20°F)    
2994 kPa (435 psi)    
−1°C (30°F)    
3049 kPa (443 psi)    
4°C (40°F)    
3105 kPa (451 psi)    
10°C (50°F)    
3160 kPa (459 psi)    
16°C (60°F)    
3215 kPa (467 psi)    
21°C (70°F)    
3270 kPa (475 psi)    
27°C (80°F)    
3325 kPa (483 psi)    
32°C (90°F)    
3380 kPa (491 psi)    
38°C (100°F)    
3435 kPa (499 psi)    
43°C (110°F)    
3496 kPa (507 psi)    
49°C (120°F)    
3551 kPa (515 psi)    
( 1 ) Nominal allowable tolerance equals 35 kPa ( 5 psi).
Table 3
962H Accumulator Precharge Pressure/Temperature Relationship for a Typical Ride Control Accumulator with a Precharge of
3270 kPa (475 psi)    
Temperature     Pressure (1)    
−7°C (20°F)    
2994 kPa (435 psi)    
−1°C (30°F)    
3049 kPa (443 psi)    
4°C (40°F)    
3105 kPa (451 psi)    
10°C (50°F)    
3160 kPa (459 psi)    
16°C (60°F)    
3215 kPa (467 psi)    
21°C (70°F)    
3270 kPa (475 psi)    
27°C (80°F)    
3325 kPa (483 psi)    
32°C (90°F)    
3380 kPa (491 psi)    
38°C (100°F)    
3435 kPa (499 psi)    
43°C (110°F)    
3496 kPa (507 psi)    
49°C (120°F)    
3551 kPa (515 psi)    
( 1 ) Nominal allowable tolerance equals 35 kPa ( 5 psi).
Open needle valve (9). The nitrogen pressure should show on the 8T-0858 Pressure Gauge within 20 seconds.Note: If the nitrogen pressure shows on the pressure gauge in less than 10 seconds, close screw (12) on regulator assembly (11) and needle valve (9). Disconnect hose assembly (6) from needle valve (9). Repeat Steps 5 through 19.
Tighten the nut on the nitrogen charging valve in a clockwise direction. Turn tee handle (14) on chuck (15) all the way in the counterclockwise direction. Close regulator (11) and needle valve (9). Slowly disconnect hose (6) from needle valve (9). Open needle valve (9). Remove chuck (15) from nitrogen charging valve (2) on the ride control accumulator.
Install the protective cap on nitrogen charging valve (2) .Testing the Ride Control Diverter Valve
The following procedure is used to determine whether the diverter valve is operating correctly. Perform this test after the ride control accumulator is charged.
Illustration 7 g00800462
Cab Controls (Right Side) (1) Ride Control Switch
Start the machine.
Move ride control switch (1) to the OFF position.
Place the bucket in the full DUMP position. Lift the front wheels off the ground by moving the lift control lever to the LOWER position.
When the front wheels are off the ground, place the lift control lever in the HOLD position. In approximately 5 seconds, the ride control switch is moved to the ON position. The front wheels should lower to the ground.If the wheels do not lower to the ground, the diverter spool has not shifted to the ON