HOSE AS 6W7165 - Caterpillar

Test
Position the machine on level ground and stop the engine.
Release the pressure in the hydraulic system. Refer to Testing And Adjusting, "Hydraulic System Pressure - Release".
Illustration 1 g00507152
Pump compartment (1) Pressure tap (power shift pressure) (2) Pressure tap (upper pump delivery pressure) (3) Pressure tap (lower pump delivery pressure)
Attach a 60000 kPa (8700 psi) pressure gauge to pressure tap (2) .
Start the engine.
Place the machine controls at the following settings: Power Mode and engine speed dial "10".
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
Open the bucket until the bucket cylinder rod is at the full retraction.
Check the main relief valve pressure setting at pressure tap (2) .Adjust
Illustration 2 g00341013
Top of main control valve (4) Adjustment screw (5) Locknut (6) Main relief valve
Move the bucket control lever until the bucket cylinder rod is at the full retraction. Check the main relief valve pressure setting at pressure tap (2) .
Return the bucket control lever to the NEUTRAL position.
Loosen locknut (5) and turn adjustment screw (4) until the pressure gauge reading at pressure tap (2) is 34300 490 kPa (4950 72 psi).
Tighten locknut (5) to a torque of 50 10 N m (37 7 lb ft).Note: Turning adjustment screw (4) clockwise increases the pressure. Turning adjustment screw (4) counterclockwise decreases the pressure.Note: Always make final pressure adjustments on pressure rise.