TM 55-1520-240-23-5
6-15
INSTALL FORWARD DRIVE SHAFT MOUNT
(Continued)
6-15
7.
Rotate plates (4) to align hole (5) with lower of
two mounting bolt holes in support (10).
NOTE
Reach lower bolt holes in mount
through bolt hole in plates. Use socket
and extension.
8.
Install two bolts (11), four washers (12), two thin
washers (13), and two nuts (14) through mount
(2) and upper and lower supports (10). Install
bolts with head aft. Install thin washer between
support and mount. Torque bolts to 30 to 35
inch-pounds.
9.
Check bolts (11). There shall be 0.06 to 0.16
inch of bolt threads extending through nut (14).
Install another washer (12) or a thinner washer
(13) if needed.
10.
Remove cloths or barrier material (15) from
under shaft (16).
11.
Rotate plates (4) to position hole (5) on top.
12.
Coat thread of bolt (17) with oil (E254). Install
bolt (head forward) and special washer (18)
through plates (4).
13.
Install washer (19) and nut (20).
Do not allow bolt to turn when torquing
nuts. If bolt turns, it can damage bolt
and plates.
14.
Hold head of bolt (17) with wrench. Check nut
(20) for friction torque of at least 24 inch-pounds.
If nut does not meet torque, replace it.
15.
Torque nuts (20) to 1000 to 1100 inch-pounds.
INSPECT
FOLLOW-ON MAINTENANCE:
Close forward drive shaft tunnel access doors (Task
2-2).
Install forward transmission fairing (if removed) (Task
2-67).
Perform vibration check (TM 1-6625-724-13&P).
END OF TASK
6-47
