TM 9-2320-387-24-l
Table 2-l. Unit Level Preventive Maintenance Checks and Services HMMWV (Cont’d).
ITEM
INTERVAL
ITEM TO 8E
NO.
INSPECTED
PROCEDURES
NOT FULLY MISSION
CAPABLE IF:
10
11
Semi-
Suspension
g. Inspect power steering pump, power
g. Any class III leak.
annually
and Steering steering gear, hydraulic control valve,
Any component damaged.
System
hoses, lines, and fittings for leaks or
(Cont’d)
damage.
Semi-
Brake
a. Inspect master cylinder, hydro-booster, a. Any leak. Plugged,
annually
System
proportioning valve, pressure limiter,
broken, or damaged
lines, and fittings for leaks and damage. lines and fittings.
MASTER CYLINDER
HYDRO-BOOSTER
CAUTION
l Use MIL-B-46176,
Brake Fluid
Silicone (BFS) for filling master
brake cylinder. Failure to use BFS
may cause
damage
to brake
cylinder.
l Thoroughly
clean
exterior
of
master
cylinder
cover before
removing cover. Dirt, water, or
grease will contaminate
brake
fluid,
causing
brake
system
damage.
l Do not use screwdriver to remove
cover. Damage to bail wire may
result.
l ‘lb prevent excessive fluid spillage,
ensure that rubber diaphragm is
completely seated before installing
cover to master cylinder.
NOTE
Remove cover from brake master
cylinder by moving bail wire using
thumb pressure only.
b. Check master brake cylinder fluid
level. Level should be l/8 in. (3.2 mm)
from top of master cylinder reservoir.
Fill with BFS as necessary.
b. Level below If8 in.
(3.2 mm) from top of
master cylinder reservoir.
2-12
