1-80 INSPECT ENGINE AFTER N2 OVERSPEED (AVIM)
Powerplant Mechanic's Tool Kit,
Technical Inspection Tool Kit,
An engine overspeed exists under the con-
ditions described in Operating Instructions,
TM 55-1520-240-10 or Engine Test (Ref.
1. If N2 overspeed limits are exceeded, proceed as
a. Remove oil filter cap and stem assembly and
metal chips or other foreign material.
b. Install oil filter element and oil filter cap and
stem assembly (Ref. Task 8-27).
c. Remove chip detector (Ref. Task 8-88), and
check for metal chips.
d. Install chip detector (Ref. Task 8-94).
e. Remove dual chip detectors (Ref. Task 8-28),
and check for metal chips.
f. Install dual chip detectors (Ref. Task 8-35).
g. If chips are found in oil filter, chip detector,
or dual chip detector, inspect contaminated
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