ENGINE AR-COMPLETE 4429565 - Caterpillar

Personal injury or death can result from machine articulation or movement.Machine frames can move and a person can be crushed.Connect the steering frame lock link between the front and rear frames before working on machine.
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.
The maximum pressure in the steering system is limited to 31000 1000 kPa (4500 145 psi) by the pump control section (pressure and flow compensator valve) of the steering pump.Reference: For the correct procedure to relieve any hydraulic oil pressure that may be in the steering system, refer to the Service Manual module for Testing and Adjusting, "System Pressure - Release" for the machine that is being tested.
Table 1
Required Tools    
Part Number     Description     Qty    
1U-5481     Pressure Gauge Group     1    
1U-5482     Pressure Adapter Group     1    
Position the machine so that the machine is in the STRAIGHT AHEAD position.
Illustration 1 g00853163
Steering frame lock is in the LOCKED position.
Move steering frame lock into the LOCKED position.
Engage the parking brake. Move the transmission direction control switch to the NEUTRAL position.
Illustration 2 g00858221
(1) Steering pump. (2) Pressure tap.
Attach the correct hose assembly from the 1U-5482 Pressure Adapter Group to pressure tap (2) . Attach the opposite end of the hose assembly to a 0 to 40000 kPa (0 to 5800 psi) pressure gauge in the 1U-5481 Pressure Gauge Group . Pressure tap (2) is located on the discharge line of steering pump (1) . The steering pump is located on the left side of the machine under the access panel behind the cab.
Start the engine. Operate the engine at high idle. The oil is at normal operating temperature when the hydraulic oil temperature gauge is between the first mark and the second mark.
After the oil has reached normal operating temperature, lower the work tool until the work tool is slightly off the ground. Run the engine at high idle.Note: During the following step, do not keep the steering pump at stall condition for more than ten seconds. If necessary, release the STIC steering control lever and wait for 30 seconds before you repeat the step.
Move the STIC steering control lever against the steering frame lock. Continue to move the STIC steering control lever against the steering frame lock in order to obtain a reliable pressure reading.
Record the pressure reading on the pressure gauge. The reading should be 31000 1000 kPa (4500 145 psi).
Stop the engine. Lower the work tool to the ground.
Remove the hose assembly and the pressure gauge from pressure tap (2) .Note: If the pressure reading is not correct, the pressure