TM 55-2835-208-23
2-10 REMOVE START BYPASS VALVE
2-10
INITIAL SETUP
Materials:
Applicable Configurations:
Brazing Rod (E33)
All
Personnel Required:
Tools:
68B Aircraft Powerplant Repairer
Engine Repairman’s Tool Kit
Equipment Condition:
NSN 5180-00-323-4944
Brazing Rod E33
APU in Assembly Fixture (Task 1-22)
1.
2.
3.
4.
5.
6.
Remove
and
discard
lockwire
(E16).
Disconnect connector P308 (1)
from start bypass valve (2).
Remove start bypass valve (2)
by
removing
bolts (3) and
washers (4).
Remove and discard gasket (5).
Bend
brazing
rod (E33) at
90° to reach a depth of 0.4
inch
into
valve
opening
and
press
against piston.
Piston
should move 0.2 in. without
restriction.
Replace
bypass
valve if piston binds.
Inspect start bypass valve (2)
and connector (6) for broken
pins and stripped or crossed
threads.
If damaged, replace
start bypass valve.
FOLLOW-ON MAINTENANCE:
None
END OF TASK
2-23
