GUARD AS-FAN 3381154 - Caterpillar

Introduction
When the steering pump has been worked on, ensure that the pump case is half full of oil prior to starting the engine. Also, ensure that the charge pump has been primed and that the pump is pumping oil. Perform the following procedure to prime the pump.Priming Procedure
Illustration 1 g00527900
Prime Steering Pump
(A) Location A
(B) Location B
Remove the tube at location (A). Fill the case with hydraulic oil. The case must be half full of oil. Install the tube.
Remove two high pressure hoses at location (B) and fill each port with clean hydraulic oil. Install both hoses.
Fill the hydraulic tank to the full mark with clean hydraulic oil and install the tank cap.
Install a 3500 kPa (500 psi) pressure gauge on the quick disconnect. The quick disconnect is located on the filter for the charge circuit.
Place the throttle in the shut off position. Without starting the engine, crank the engine for 15 seconds at a time until the pressure starts to show on the pressure gauge. Wait for a minimum of one minute between cranking in order to allow the starter to cool.
Continue to crank the engine until the charge pressure is a minimum of 1000 kPa (150 psi). If charge pressure does not show on the gauge after a reasonable number of attempts, stop and determine the cause.
Check for oil leaks.
If no oil leaks are detected, the machine can be started. The pressure on the gauge at HIGH IDLE should be 1380 to 2000 kPa (200 to 290 psi). If the pressure is correct, shut off the engine and remove the pressure gauge.