ALTERNATOR GP 5636503 - Caterpillar

Adjustment Procedure
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Open the cover on the right side of the machine in order to access the main control valve.Adjustment (P1)
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Main control valve (10) Main relief valve (P1)
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Main relief valve (typical example) (13) Locknut (14) Adjustment screw
Loosen locknut (13) . Turn adjustment screw (14) clockwise in order to increase the pressure. Turn adjustment screw (14) counterclockwise in order to decrease the pressure. Tighten locknut (13) after the adjustment is made.Note: Always make final pressure adjustment on pressure rise.Adjustment (P2)
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Main control valve (11) Main relief valve (P2)
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Main relief valve (typical example) (13) Locknut (14) Adjustment screw
Loosen locknut (13) . Turn adjustment screw (14) clockwise in order to increase the pressure. Turn adjustment screw (14) counterclockwise in order to decrease the pressure. Tighten locknut (13) after the adjustment is made.Note: Always make final pressure adjustment on pressure rise.Adjustment (P3)
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Main control valve (12) Main relief valve (P3)
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Main relief valve (typical example) (13) Locknut (14) Adjustment screw
Loosen locknut (13) . Turn adjustment screw (14) clockwise in order to increase the pressure. Turn adjustment screw (14) counterclockwise in order to decrease the pressure. Tighten locknut (13) after the adjustment is made.Note: Always make final pressure adjustment on pressure rise.Temporary Setting of the Main Relief Valves
Note: A temporary setting of the main relief valve is required before any line relief valve can be adjusted.
The temporary pressure value of the main relief valve should be 28950 250 kPa (4200 36 psi). If the main relief valves are not within the specification, adjust the main relief valve pressure setting to the correct pressure specification. Refer to Testing and Adjusting, "Relief Valve (Main) - Test and Adjust".
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Main control valve (10) Main relief valve for the boom, bucket, and left travel control valves (P1) (11) Main relief valve for the stick, auxiliary, and right travel control valves (P2) (12) Main relief valve for the swing and blade control valves (P3)
Illustration 11 g01156988
Main relief valve (typical example) (13) Locknut (14) Adjustment screw
Loosen locknut (13) . Turn adjustment screw (14) clockwise for one half turn. Tighten locknut (13) after the adjustment is made.