TM 55-1520-240-23-3
4-35.1
INSTALL FORWARD ENGINE MOUNT ADAPTER
(Continued)
4-35.1
6.
Install slip-fit bushing (12), shoulder outboard,
in clevis (10).
7.
Install bolt (13), two washers (14), spacer (15),
and nut (16). Raise or lower engine (3) as
needed for clearance.
8.
Torque nut (16) to 350 to 400 inch-pounds to
seat bushing. Loosen nut and retorque to 20
inch-pounds above run on torque and not less
than 70 inch-pounds.
INSPECT
9.
Check barrel nuts (17). Rotational torque shall
not be less than 7 inch-pounds.
10.
Push four bolts (18) up and over adapter (1) and
tighten evenly.
11.
Torque bolts (18) to 20 inch-pounds above
friction torque.
12.
Relax tension on hoist (7).
13.
Re-torque bolts (18) to 95 to 110 inch-pounds.
14.
Measure gap between adapters (1) and caps (8).
Gap shall measure 0.010 to 0.070 inch.
15.
Check bolts (18). Bolts shall extend a minimum
of two threads through barrel nuts (17) but shall
not bottom out. If bolts bottom out, add washers
under bolt head and repeat steps 13 and 14.
Lockwire bolts (18). Use lockwire (E231).
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