Fig. 22. Visually Inspect Rubber Boots
Fig. 20. Inspect Pistons
bore packing seal. If brake head has seen limited use,
11. Inspect pistons for minor scratches and nicks and blend
visually inspect packing, as shown in Figure 24, for cuts
with crocus cloth. If piston is badly scratched, nicked, or
or other abrasions that will make seal ineffective.
worn, replace piston. Piston showing evidence of ex-
cessive wear or rubbing off of the chromed surface will
16. Clean torque plate with solvent. Make sure no solvent
cause undue friction and must be replaced. Visually in-
remains in fluid passages or grooves. Inspect cylinder
spect pistons as shown in Figure 20.
bores for minor nicks or scratches and blend with crocus
12. Remove rubber boots as shown in Figure 21. Do not use
cloth. Replace torque plate if broken or severely dam-
tools which will damage boot.
aged.
13. Replace all old rubber boots if brake head had ex-
REASSEMBLY
tended use. If brake head has not seen extended use,
17. Lubricate packing and pistons with brake fluid or sili-
carefully inspect visually as in Figure 22.
cone grease compatible with brake fluid. DO NOT USE
PETROLEUM TYPE OILS OR LUBRICANTS.
14. With the aid of a small piece of shim stock or other such
device, carefully lift piston bore packings out of groove
18. Reinstall cylinder bore packings in grooves. Be careful
as shown in Figure 23. Extreme care must be exercised
not to damage packings. Press into grooves as shown
not to damage this seal if its reuse is intended, as any
in Figure 25.
cuts or other abrasions will necessitate replacement of
the seal.
19. Reinstall rubber boots in cylinder bore grooves as shown
15. If brake head has seen extensive use, replace cylinder
in Figure 26.
Fig. 21. Remove Rubber Boots
Fig. 23. Remove Piston Bore Packing
[7]
