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(021)
PART 2-2-BRAKE SYSTEM
FILLER CAP
GASKET
SEAl
SNAP\RING
VALVE
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0-RING
PISTON
CUP
SPRING
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H1279-A
FIG.
18-Brake Master Cylinder Disassembled
BRAKE SHOE RELINING
Brake linings that are worn to
within
Ys2
inch of the rivet or have
been saturated with grease or oil
should be replaced. Failure to
re~
place worn linings will result in a
scored drum. When it is necessary
to replace linings, they must also
be replaced on the wheel on the
opposite side of the car.
Inspect brake shoes for distortion.
cracks, or looseness.
If
this condi-
tion exists, the shoe should be dis-
carded. Do not repair a defective
brake shoe.
1. Wash the brake shoes
thor~
oughly in a clean solvent. Remove
all burrs or rough spots from the
shoes.
2. Check the inside diameter of
the brake drum. If the diameter is
less than 11.120 inches, standard
linings may be installed.
If
the dia-
meter is 11.120-11.150 inches, over-
size linings should be installed.
3. Position the new lining on the
shoe. Starting in the center, insert
and secure the rivets, working al-
ternately towards each end. Install
all parts supplied in the kit. nen-
uine Lincoln replacement linings
are ground and no further grind-
ing is required.
4. Check the clearance between
the shoe and lining. The lining must
scat tightly against the shoe with not
more than 0.005-inch clearance be-
tween any two rivets.
MASTER CYLINDER
DISASSEMBLY
1. Clean the outside of the cyl-
inder, and remove the filler cap and
2-17 • .
gasket. Pour out any brake fluid that
may remain in the cylinder or
res~
ervoir.
2. Remove the stop light switch
and the brake line fitting from the
forward end of the cylinder (Fig.
18).
3. Remove the snap ring from the
bore at the rear of the cylinder with
tool 33621 (Fig. 19).
4. Remove the piston assembly,
cup, and the spring and check valve
assembly from the cylinder bore.
Remove the 0-ring from the piston.
CLEANING, INSPECTION,
AND REPAIRS
1. Clean all master cylinder parts
in clean, denatured alcohol, and
in~
spect the parts for wear or damage,
replacing them as required. When
using a master cylinder repair kit,
install all the parts supplied.
2. Check the ports and vents in
the master cylinder to make sure
that all are open and free of foreign
matter.
3. Check the ports in the piston
to make sure that they are open and
free of foreign material.
4. Inspect the cylinder walls for
scores or rust, and recondition them
if necessary. Hone the cylinder
walls no more than necessary
(0.003 inch maximum). Oversize
pistons and cups are not available
for excessively honed cylinders.
5. Remove any burrs or loose
metal that may have resulted from
the honing operation, and clean the
cylinder with denatured alcohol.
RETURN
SPRING
FILTER
ASSEMBLY
FIG.
19-Removing Snap
H1291-A
Ring from Master Cylinder
END PLATE
FIG.
20-End Plate and Piston Removed
H1293-A
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Troubleshooting
