TM 9-4910-387-14-2
B.
COPPER TUBING FROM VACUUM REGULATOR TO VACUUM PUMP MAY BE PLUGGED OR BROKEN.
1 Remove all copper tubing between VACUUM
REGULATOR (1) and vacuum pump (2). Blow
air through copper tubing to remove any
obstruction.
2 Replace copper tubing (fig. 4, app D) if broken.
3 If VACUUM REGULATOR does not function,
proceed to step C.
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