TM 9-2330-203-14&P
4-23. WHEEL CYLINDER REPLACEMENT (M197A1 AND M198A1).
This task covers:
a Removal
c
Installation
b Inspection
Initial Setup:
Equipment Conditions:
Materials/Parts:
One gasket
Tools/Test Equipment:
General mechanic's tool kit
Three lockwashers
Brakeshoe spring pliers
Drain pan
a. REMOVAL
WARNING
DO NOT handle brake shoes, brake drums, or other brake components unless area has been
properly cleaned. There may be asbestos dust on these components which can be dangerous if
you touch it or breathe it. Wear an approved filter mask and gloves. Never use compressed air or a
dry brush to clean brake components. Dust may be removed using an Industrial-type vacuum
cleaner. Clean dust or mud away from brake components with water and a wet, soft brush or cloth.
Failure to follow this warning may result In serious Illness or death to personnel.
NOTE
Use a drain pan to catch any draining brake fluid. Clean up all spills.
1.
Early Model:
(a)
Remove two extension springs (18) and two return springs (19) using brakeshoe spring pliers.
(b)
Place a suitable container under tube assembly (4) at back of wheel cylinder (21). Unscrew tube assembly
and allow brake fluid to drain into container.
(c)
Remove fluid passage bolt (8), spacer (7), tube tee (6), and shouldered washer (5) from wheel cylinder (1).
(d)
Remove two capscrews (10) and lockwashers (11) from wheel cylinder (1). Slide brake shoes (3) away from
wheel cylinder and remove wheel cylinder and shield (2) from backing plate (9). Discard lockwashers.
(e)
Remove fluid passage bolt (14), spacer (13), tube tee (12), and shouldered washer (17) from wheel cylinder
(21).
(f)
Remove two capscrews (15) and lockwashers (16) from wheel cylinder (21). Slide brake shoes (3) away
from wheel cylinder and remove wheel cylinder and shield (20) from backing plate (9). Discard lockwashers.
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