California Air Tools 3010 Service Manual download pdf (Page 139)

ENGINE LUBRICATION SYSTEM 6-9

Oil Pump and Relief Valve

•

Visually inspect the relief valve spring [A], and steel ball

[B].

If any rough spots are found during the above inspection,

wash the valve clean with a high flash-point solvent and

blow out any foreign particles that may be in the valve with

compressed air.

WARNING

Clean the parts in a well-ventilated area, and take

care that there is no spark or flame anywhere near

the working area. Because of the danger of highly

flammable liquids, do not use gasoline or low flash

-point solvents.

If cleaning does not solve the problem, replace the relief

valve parts.

•

Measure the clearance between the high point of the inner

rotor and the high point of the outer rotor.

If the clearance exceeds the service limit, replace the in-

ner and outer rotors as a s et.

Inner Rotor/Outer Rotor Clearance

Standard: Less than 0.14 mm (0.006 in.)

Service Limit: 0.3 mm (0.01 in .)

•

Measure the following diameters and width of the oil pump

parts.

If the part(s) has worn past the service limit, replace the

worn part(s).

Inner Rotor Shaft Diameter [A]

Standard:

10.973 ∼ 10.984 mm (0.4320 ∼

0.4324 in.)

Service Limit : 10. 93 mm (0.430 in.)

Outer Rotor Diameter [B]

Standard: 40.53 ∼ 40.56 mm (1.596 ∼ 1.597 in.)

Service Limit: 40.47 mm ( 1.593 in.)

Outer Rotor Width [C]

Standard:

9.98 ∼ 10.00 mm (0. 393 ∼ 0.394

in.)

Service Limit: 9.83 mm (0.387 in.)

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California Air Tools 3010 Service Manual Page 139

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