TM 55-1520-240-23-6
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TEST BRAKE MASTER CYLINDER (AVIM)
(Continued)
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10.
Close shutoff valve (11) to reduce pressure to 0
psi.
11.
Disconnect hose from PRESS port (5).
12.
Install rod (13) and thumb screw (14) on test
fixture (2).
13.
Connect hose (4) to BRAKE Port (6).
14.
Adjust handle (8) until distance from center of
rod end bearing (9) to center of bearing (10)
is 12.25 inches (12.25 inch position). Tighten
thumb screw (14).
15.
Open shutoff valve (11) and apply 10 psi to
BRAKE Port (6). Maintain pressure for 1 minute.
16.
Check cylinder (1) for leaks. There shall be no
external leaks. Internal leaks from ports (5 and
7) shall not exceed 2 drops per minute.
17.
Increase pressure at BRAKE port (6) to 1950
psi. Maintain pressure for 1 minute.
18.
Check cylinder (1) for leaks. There shall be no
external leaks. Internal leaks from ports (5 and
7) shall not exceed 2 drops per minute.
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