TM 1-1520-238-23
Change 4
6-161
6.33.
ENGINE NOSE GEARBOX FLEXIBLE COUPLING, VANEAXIAL FAN, AND INLET DIFFUSER
REMOVAL/INSTALLATION – continued
CAUTION
To prevent damage to engine nose gear-
box output shaft, do not torque locknut
over 1200 INCH-POUNDS.
h. Install lockring (5) on shaft (2).
(1) Check alinement of inner and outer tabs of
lockring ring (5) with slots in locknut (10) and
shaft (2).
(2) If lockring ring (5) cannot be installed on shaft
(2) due to tab misalinement, go to step h.(3);
otherwise, install lockring ring (5) on shaft (2)
and go to step i.
(3) Continue to torque locknut (10) to 1200
INCH-POUNDS maximum in order to aline
inner and outer tabs of lockring (5) with slots
of locknut (10) and shaft (2) so that lockring
ring (5) can be installed on shaft (2). Use
torque wrench.
i. Install bearing nut (1) on shaft (2). Torque bear-
ing nut (1) to 40 INCH-POUNDS.
(1) Install retaining ring (4) on shaft (2).
(2) Hand tighten bearing nut (1) on shaft (2).
(3) Aline prongs of bearing nut wrench (3) with
holes in bearing nut (1). Use bearing nut
wrench.
(4) Tighten bearing nut (1) until completely
seated in coupling (7).
(5) Torque bearing nut (1) to 40 INCH-POUNDS.
Use torque wrench.
j. Inspect (QA).
k. Install No. 1 and/or No. 2 engine input drive
shaft and outer diffuser (para 6.2).
END OF TASK
M04-0545-17A
10
2
5
1
4
2
M04-0545-18
1
3
M04-0545-19
7
