TUBE ASSEM. 7N3961 - Caterpillar

Illustration 5 g01451120
Location of pressure port "STR-PILOT-S"
Install a 0 to 3400 kPa (0 to 500 psi) pressure gauge on pressure port "STR-PILOT-S" on the diagnostic plate. Make sure that the hydraulic tank filler cap is tight.
Start the engine. Allow the oil to reach normal operating temperature. Check the reading on the pressure gauge. With the machine at low idle, the correct pilot oil pressure should be 2400 150 kPa (350 20 psi) at 35 L/min (9 US gpm) and 49 °C (120 °F).
Stop the engine. Release all pressure in the steering system and in the braking system.
If the pressure reading is within the specification, remove the pressure gauge and proceed to "Check the Pilot Pressure of the Primary Steering Pump".If the pressure reading was not within the specification, proceed to Step 6.
Illustration 6 g01451127
Steering pilot relief valve (5) Steering pilot relief valve (8) Locknut (9) Adjustment screw
Locate