TM 5-4930-218-14
(4) Disassemble the master cylinder by removing
(4) Inspect the spring for cracks and distortion.
the washer (2), cups (3 and 5), piston (4), spring (6),
Replace a defective spring.
valve (7), and washer (8) from the body (9).
c. Reassembly and lnstallation.
(1) Reassembly of the master cylinder is the
b. Cleaning and Inspection.
reverse of disassembly. Refer to figure 4-23.
(1) Discard and replace all non-metallic parts of
(2) Assemble the master cylinder to the air cham-
the master cylinder. Clean all remaining parts with
ber (para 4-62c).
dry cleaning solvent (fed. spec. P-D-680); dry
(3) Install the air chamber and master cylinder
thoroughly.
assembly as shown in figure 4-21.
(2) Inspect the piston (4) for scoring and clogged
ports. Open clogged ports, taking care not to enlarge
the openings. Replace a scored piston.
a. Adjustment. Wear of the brake linings (34, fig.
(3) Inspect the body (9) for cracks and damaged
4-25) may prevent the linings from engaging the
threads. Inspect the body bore for scoring. Hone or
brake drums (3, fig. 4-24) with the required force
replace the body if the bore is damaged. Replace the
necessary for effective braking. When wear occurs,
master cylinder if the body cannot be repaired.
you must adjust the brakes. Proceed as follows:
