TM 55-1520-240-23-6
7-233
INSPECT BRAKE TRANSFER VALVE (AVIM)
(Continued)
7-233
3.
Measure diameter of poppet (5). Diameter shall
not be less than 0.308 inch. Rounded end of
poppet shall have no nicks or scratches.
4.
Measure bore (6) and large outside diameter of
guide (7). Bore shall not be more than 0.310
inch. Diameter shall not be less than 0.467 inch.
5.
Measure free length of spring (8). Free length
shall be 6.63 to 6.87 inches.
6.
Install spring (8) in compression tester (9).
7.
Compress spring (8) to 2.440 inches. Force
needed to compress spring shall be 11 to 13
pounds.
8.
Remove spring (8) from tester (9).
9.
Measure free length of spring (10). Free length
shall be 3.09 to 3.21 inches.
10.
Install spring (10) in tester (9).
11.
Compress spring (10) to 2.312 inches. Force
needed to compress spring shall be 5 to 7
ounces.
12.
Remove spring (10) from tester (9).
FOLLOW-ON MAINTENANCE:
None
END OF TASK
7-877
