SHAFT 0628531 - Caterpillar

Illustration 6 g00617568
Location of the manual shutoff valves
Illustration 7 g00569707
The manual shutoff valves are located behind the cab. Open the transmission guard in order to access the manual shutoff valves. (1) Manual drain valve (2) Manual shutoff valve
Install the accumulator on the machine. Make sure that the wheels are installed. The suspension cylinders must be retracted. (The suspension must be lowered.) See "Checking Precharge on the Machine" for the procedure on lowering the suspension. Manual drain valve (1) must be closed. Manual shutoff valve (2) must also be closed. Install the steering frame locks and block the rear wheels. Do not charge the accumulator until all of these conditions are met.
Illustration 8 g00509607
7S-5437 Charging Equipment (3) Pressure gauge (4) Connection (5) Regulator (6) Valve (7) Pressure gauge (8) Adjusting screw (9) Valve (10) Connector
Illustration 9 g00619044
Location of the suspension accumulator
Illustration 10 g00569719
The suspension accumulator is located behind the cab. (11) Guard (12) Protective cap (13) Gas valve
Remove guard (11) and remove protective cap (12) from the accumulator gas valve (13) .
Use the 0 to 14000 kPa (0 to 2000 psi) gauge (7) .
Make sure that valve (6) is closed. Attach connector (10) to accumulator gas valve (13) .
Turn valve (9) clockwise until you encounter the stop. Gauge (7) will indicate the nitrogen gas pressure of the accumulator.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Disconnect the coupler at valve (6). Close valve (6) and secure valve (6) in a suitable container.
Start the engine and move the hoist lever to the lower position.
Open shutoff valve (2) and allow the suspension to rise fully. Open valve (6). This will vent air and excess oil from the gas chamber of the accumulator.
Close valve (6) .
Move the hoist lever to the float position. Open manual drain valve (1) and slowly open manual shutoff valve (2). This connects the cylinders and the accumulator to the tank. This will cause the suspension to lower.
Close manual drain valve (1). Move the hoist lever to the hold position. Move the hoist lever to the lower position. The suspension should fully raise. Close manual shutoff valve (2) .
Repeat steps 10 and 11 five times. This should remove any air from the system.
Make sure that the suspension is fully lowered. Attach a hose to the bleed fitting of the accumulator and secure the free end in a suitable container. The bleed fitting of the accumulator is located at the base of the accumulator.
Attach the coupler to valve (6). Attach regulator (5) to the nitrogen cylinder.
Close valve (6). Open the nitrogen cylinder valve and adjust screw (8) until gauge (3) reads the correct precharge pressure. The pressure must be 2070