FILLER ASSEM. 5J1122 - Caterpillar

Sudden movement of the machine or release of oil under pressure can cause serious injury to persons on or near the machine.To prevent possible injury, perform the procedure that follows before testing and adjusting the hydraulic system.
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.
Table 1
Required Tools
Digital Pressure Indicator
Tool Item Part Number Description Qty
A A1 198-4234 Digital Pressure Indicator 1
A2 198-4238(1) Pressure Sensor 0 - 34500 kPa (0 - 5000 psi) 1
B - 4C-6500 Digital Thermometer 1
(1) This pressure sensor is an optional item. This sensor is not included in the 198-4240 Digital Pressure Indicator. The sensor must be ordered separately.Note: Perform the following steps before conducting this procedure:
Park the machine in a flat, level spot.
Place the propel control lever in NEUTRAL.
Engage the parking brake.
Stop the engine.
Illustration 1 g01076562
(1) Pressure port for the steering system
Connect the 0 - 34500 kPa (0 - 5000 psi) pressure sensor (red) from Tool A to steering pressure port (1).
Start the engine. Operate the engine at 2250 rpm (HIGH IDLE). Monitor the hydraulic oil temperature with Tool B. Operate the machine until the oil temperature reaches 43° 5.6°C (110° 10°F).
With the machine at HIGH IDLE, turn the steering wheel against the stop to one side.
Read the pressure on Tool A. The pressure should be 15500 700 kPa (2250 100 psi).
Illustration 2 g01076564
(2) Steering relief valve
If the pressure is outside the specified range, loosen the locknut on steering relief valve (2). In order to increase pressure, rotate the adjustment screw clockwise. In order to decrease pressure, rotate the adjustment screw counterclockwise. Hold the adjustment screw in place, and tighten the locknut.
Recheck the steering relief pressure. If the pressure is inside the specified range, stop the engine and remove the tooling.