TM 1-1520-238-23
Change 9
7-465
7.120.
SHAFT DRIVEN COMPRESSOR (SDC) REMOVAL – continued
q. Check failed SDC for damage. Remove the
SDC air inlet housing (4). Remove four bolts (22)
and washers (23). Retain hardware for re-installa-
tion.
r. Check SDC impeller for the following damage:
None allowed.
(1) Missing impeller retaining nut.
(2) Burst or severely eroded impeller.
(3) Broken impeller shaft.
(4) Examine for cracks, breaks, nicks or evi-
dence of fretting on hub face.
s. If any of the above discrepancies are noted,
perform the inspections listed below in steps
t. through aa. If none of the above discrepan-
cies exist, go to step ah.
t. Remove, clean, and inspect air particle sepa-
rator (para 7.116).
u. Remove, clean, and inspect inlet throttle valve
(para 7.119).
v. Using a flashlight and an inspection mirror,
inspect inlet duct for FOD (para 7.114).
w. Install air particle separator (para 7.116).
x. Install inlet throttle valve (para 7.119).
y. Remove, clean, and inspect SDC pressure
outlet hose (para 7.127).
z. Remove, clean, and inspect SDC check valve
and check valve tube (para 7.135).
aa. Using a flashlight and an inspection mirror,
inspect PAS tee downstream of SDC check
valve for FOD. If FOD is detected, go to step
ab. If FOD is not detected, go to step af.
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M04-068-10
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