INSPECT FORWARD TRANSMISSION OIL COOLER IMPELLER (Continued)
Inspect locknut (4) as follows:
Grasp the locknut (4) and check it for hand
tightness in the off direction.
If locknut (4) can be turned by hand, remove
locknut (4), impeller (6) and key (7) from shaft
(8) (Task 6-117).
Inspect key (7), locknut (4), tangwasher (5),
impeller key slot (9), face of the impeller key
slot (9), and face of the impeller (6) that
contacts the locknut (4) for wear. If wear
exceeds 0.005 inch, replace affected items.
Inspect the impeller key slot (9) in the shaft
for wear. If wear exceeds 0.010 inch, replace
If locknut (4) cannot be turned by hand,
torque check nut to 180-230 foot-pounds
and install tangwasher (5) and retaining ring
(1). (Refer to steps 4 and 5, Task 6-118.)
If crack is suspected in forward transmission oil
cooler impellar, refer to TM 1-1520-253-23.
Install forward transmission adapter assembly
Install oil cooler fan shroud (Task 6-116).
Install oil cooler air inlet duct (Task 2-122).
Close forward transmission fairings (Task 2-2).
END OF TASK