171
1
2
3
4401
FIGURE 12
1. Brake Rod
2. Locknut
3. Push Rod
Rebuild Procedure For Master Cylinder
If cylinder is to be rebuilt, remove from vehicle and pro-
ceed as follows:
1. Remove filler cup and gasket and pour fluid from res-
ervoir. (Do not reuse fluid).
2. Remove boot from cylinder.
3. Remove lock ring, washer, pistons, primary cup,
spring, valve and valve seat from cylinder.
4. Clean cylinder and filler cup thoroughly in alcohol.
(Do not use gasoline or kerosene).
5. Inspect walls of master cylinder barrel for rust or
score marks; if necessary recondition by honing.
Brake cylinder hones are available from automotive
supply distributors. Hone only enough to clean up
the wall. Clean cylinder again with alcohol, dry with
compressed air.
6. Reassemble in reverse order. Dip all internal parts in
brake fluid prior to assembly.
7. Install the master cylinder in the vehicle, fill with fluid
and bleed the brake system. Check for leaks prior to
returning vehicle to service.
BRAKE FLUID RESERVOIR
COMPENSATING
PORT
VENTED CAP
FILLER PORT
STOP WASHER
PUSH ROD
LOCK RING
RUBBER BOOT
SECONDARY CUP
PISTON PRIMARY CUP
TO
WHEEL
CYLINDER
FIGURE 13
NOTICE
• Severe pitting, scoring,
and/or rust requires replace-
ment with a new or rebuilt
master cylinder.
REBUILD PROCEDURE FOR 1” WHEEL CYLINDERS
Disconnect brake line and brake shoes and remove the
wheel cylinder. Remove the boot from each end of the
cylinder, push the pistons, rubber cups and spring from
the cylinder. Wash cylinder in alcohol. Examine walls for
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