TM 9-2320-387-24-i
7-6. HYDRO-BOOSTER REPLACEMENT
This task covers:
a. Removal
b. Installation
INITIAL SETUP:
Tools
General mechanic’s tool kit:
automotive (Appendix B, Item 11
Maintenance and repair shop equipment:
automotive (Appendix B, Item 2)
MateriaWF’arts
Cotter pin (Appendix G, Item 36)
Spring washer (Appendix G, Item 452)
Four lockwashers (Appendix G, Item 217)
Manual References
TM 9-2320-387-24P
Equipment Condition
Master cylinder removed (para. 7-51.
Maintenance Level
Unit
Personnel Required
One mechanic
One assistant
1
a. Removal
1
CAUTION
Cover or plug all open lines and connections immediately after
disconnection to prevent contamination. Remove all plugs prior to
connection.
NOTE
Have drainage container ready to catch brake fluid.
1.
Mark and disconnect two high-pressure lines (4) and return line (5) from hydro-booster (6).
2.
Remove cotter pin (3) and washer (21, and disconnect pushrod (7) from brake pedal bellcrank (13).
Remove spring washer (11 from brake pedal bellcrank (131. Discard cotter pin (3) and spring washer (1).
3.
Remove four nuts (121,lockwashers (111, washers (lo), hydra-booster (61, and gasket (8) from cowl (9).
Discard lockwashers (11).
b. Installation
1.
Install gasket (8) and hydra-booster (6) on cowl (9) with four washers (lo), lockwashers (111, and
nuts (12). Do not tighten nuts (12).
2.
Install spring washer (1) on brake pedal bellcrank (13). Connect hydra-booster pushrod (7) to brake
pedal bellcrank (131 with washer (2) and cotter pin (3).
3.
Tighten nuts (121 to 21 lb-R (29 N-m).
4.
Connect two high-pressure lines (41 and return line (5) to hydro-booster (6).
7-16
