P r e v e n t i v e M a i n t e n a n c e C h e c k s and Services f o r M60A1 AVLB Launcher -
Perform launch and retrieve proce-
dures three times (TM 5-5420-202-10).
Then perform launch procedure but
do not retrieve.
Check control levers for proper re-
Visually check valve bank for leaks
while performing launch and retrieve