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Page Title:
SERVICE BRAKE BLEEDING - continued |
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 TM 9-2320-361-24-1
0172 00
SERVICE BRAKE BLEEDING (Contd)
WARNING
Accidental or intentional introduction of liquid contaminants
into the environment is a violation of state, federal, and
military regulations. Refer to Army POL (WP 0001 00) for
information concerning storage, use, and disposal of these
liquids. Failure to do so may result in damage to environment
and health of personnel.
CAUTION
Do not reuse brake fluid. Reusing brake fluid may result in
damage to equipment.
NOTE
Use a drain pan to capture any draining brake fluid. Dispose of
fluids in accordance with local policy and ordinances. Ensure all
spills are cleaned up.
PRESSURE TANK METHOD
1.
Remove screw-assembled lockwasher (7) from brace (2) and open access door (1) exposing top of
master cylinder (6). Discard screw-assembled lockwasher (7).
2.
Disconnect vent line (3) from adapter (4).
3.
Clean top of master cylinder (6) and remove filler plug (5).
4.
Fill master cylinder (6) with fresh brake fluid to 1/2 in. (1.27 cm) from top.
5.
Install adapter plug (9) and male quick-disconnect coupling (8) on master cylinder (6).
6.
Ensure brake bleeder tank (10) is charged with brake fluid and is pressurized to 2025 psi
(138172 kPa). Follow manufacturer instructions for purging and preparation before connecting to
brake system. Turn flow valve (13) off on tank hose (11), if so equipped.
7.
Connect female quick-disconnect coupling (12) to male quick-disconnect coupling (8).
8.
Turn flow valve (13) on, if so equipped.
9.
Check for leaks and correct as necessary.
CAUTION
Always bleed air-hydraulic cylinder before bleeding
downstream hydraulic components. Failure to do so may result
in damage to equipment.
10.
Clean around bleeder screw (19) located on top front of air-hydraulic cylinder (18).
11.
Fill transparent container (17) 1/3 to 1/2 full of brake fluid.
12.
Install flexible snug-fitting hose (16) on bleeder screw (19) and immerse other end of hose (15) in
transparent container (17). Keep hose (16) end under surface of brake fluid at all times.
13.
Loosen bleeder screw (19) 3/4 turn until brake fluid is flowing. Allow brake fluid to flow until no
air bubbles are observed.
NOTE
If brake fluid doesn't flow after 3/4 turn, go to step 14;
otherwise, go to step 15.
14.
Turn valve (13) off and remove female quick-disconnect coupling (12). Remove and clean bleeder
screw (14). Install bleeder screw (19) and repeat steps 7 through 13.
15.
Close bleeder screw (19) and remove hose (16) from bleeder screw (19). Tighten bleeder screw (19)
1020 lb-ft (1427 Nm).
16.
If hydraulic components of any one wheel were worked on, go to that wheel, clean around bleeder
screw (19), and bleed brake system by performing steps 11 through 15. Install end of hose (16) on
bleeder screw (15) and immerse other end of hose (16) in brake fluid in transparent container (17).
0172 00-2
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