SOLENOID SUB. ASSY. B 0861822 - Caterpillar

Adjustment (Boom Cylinders)
Note: Refer to Table 2 for the appropriate settings for power shift pressure, engine speeds, and pressures for the individual line relief valves for standard machines and machines with heavy lift.
To adjust the line relief valve pressure setting of the boom cylinder head end (12) , move the joystick for the boom until the boom is at the full BOOM RAISE position (full extension of boom cylinders). Hold the joystick for the boom in this position.
Check the pressure in the boom cylinder head end on the pressure gauge at pressure tap (1) and pressure tap (3) .
Return the joystick for the boom to the NEUTRAL position.
Refer to Table 2. If the pressure gauge reading at pressure tap (1) and pressure tap (3) is not within the specification, adjust line relief valve (12) .
In order to adjust line relief valve (12) , loosen locknut (15) on the boom line relief valve. Turn adjustment screw (16) until the pressure gauge reading at pressure tap (1) and pressure tap (3) is within the specification. Refer to Table 2.Note: Always make final pressure adjustment on pressure rise.
Tighten locknut (15) on line relief valve (12) .Note: In order to adjust the line relief valve pressure setting for the boom cylinder rod end, a temporary adjustment of the line relief valve for the bucket cylinder head end (13) must be performed. Note: Refer to Table 2 for the appropriate settings for power shift pressure, engine speeds, and pressures for the individual line relief valves for standard machines and machines with heavy lift.
Loosen locknut (15) on the line relief valve for the BUCKET CLOSE function. Turn adjustment screw (16) by one quarter turn in a clockwise direction. Tighten locknut (15) on the line relief valve for the bucket cylinder.
Move the joystick for the bucket until the bucket is at the full BUCKET CLOSE position (full extension of the bucket cylinder). Hold the joystick for the bucket in this position. At the same time, move the joystick for the boom until the boom is at the full BOOM DOWN position (full retraction of boom cylinders). Hold the joystick for the boom in this position.
Check the pressure in the boom cylinder rod end on the pressure gauge at pressure tap (1) .
Return the joystick for the boom to the NEUTRAL position.
Refer to Table 2. If the pressure gauge reading at pressure tap (1) is not within the specification, adjust line relief valve (17) .
In order to adjust line relief valve (17) , loosen locknut (15) on the boom line relief valve. Turn adjustment screw (16) until the pressure gauge reading at pressure tap (1) is within the specification. Refer to Table 2.Note: Always make final pressure adjustment on pressure rise.
Tighten locknut (15) on the boom line relief valve.
After completion of line relief valve adjustment for the boom cylinders, return the line relief valve pressure setting of the bucket to the specified pressure setting.Note: If an appropriate location is not available to fully extend the boom