785 Steering Pump (4T-0382) Installation/Start-Up Caterpillar

Problem:

When replacing the 4T-0382 Steering Pump, use the startup procedure below to aid in increasing the life of the pump.

Solution:

Installation/Startup Procedure for the 4T-0382 Steering Pump:

1* Prior to installing pump on truck, fill the pump case with proper oil.

2* Install pump on truck and attach suction line, pump discharge line and case drain line to pump.

3* Fill steering tank with oil and leave the cap off the tank until the lines are vented. WITH ENGINE OFF:

4* Loosen suction line at the tank to vent air out of suction line.

5* Loosen case drain line at the tank to drain air out of case drain line.

6* Refill tank to proper level and install tank cap.

7* With the engine kill switch off, crank the engine until pressure starts to rise in the steering circuit. WITH THE ENGINE ON:

8* Start the engine and with the engine at low idle, steer the truck to purge the air from the pump discharge line.

9* Tighten all hose joints and check for oil leaks.

10* Refill tank to proper oil level.

COPYRIGHT 1999 CATERPILLAR ALL RIGHTS RESERVED