California Air Tools 3010 Service Manual download pdf (Page 321)

100

101

BRAKES 13-11

Brake Pedal and Master Cylinder

Master Cylinder Inspectio n

•

Disassemble the master cylinder (see Brake Master

Cylinder Cup and Dust Seal Replacement in the Periodic

Maintenance chapter).

•

Check that there are no scratches, rust or pitting on the

inside of the cylinder [A] and on the outside of the pistons

[B].

If the cylinder or piston shows any damage, replace them.

•

Inspect the primary cups [C] and secondary cups [D].

If a cup is worn, damaged, softened (rotted), or swollen,

replace it.

If fluid leakage is noted at the brake push rod, the sec-

ondary cup of the rear piston should be replaced.

•

Check the dust cover [E] for damage.

If it is damaged, replace it.

•

Check that the relief [F] and supply [G] ports are not

plugged.

If the small relief port becomes plugged, the brake shoes

will drag on the drum. Blow the ports clean with com-

pressed air.

•

Check the piston return springs [H] for any damage.

If the spring is damaged, replace it.

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California Air Tools 3010 Service Manual Page 321

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