TM 55-1520-240-23-5
6-144
INSTALL AFT TRANSMISSION OIL COOLER FAN
(Continued)
6-144
1.
Check the torque of the fan retaining nut (1).
Torque nut to 400 inch-pounds.
Do not overgrease. Do not block vent
fitting (3). Stop grease application
as soon as clean grease comes out
of vent fitting.
1.1.
Apply grease (E190) to fan (1.1) at fitting (2) until
clean grease comes out vent (3). Use hand
lubricating gun.
2.
Remove drive shaft (4) from oil cooler (5).
Remove packings (6) from each end of shaft.
Dry cleaning solvent (E162) is
flammable end toxic. It can irritate
skin and cause burns. Use only in
well-ventilated area, away from heat
and open flame. In case of contact,
immediately flush skin or eyes with
water for at least 15 minutes. Get
medical attention for eyes.
3.
Clean splines (7) at both ends of shaft (4). Use
solvent (E162) and clean cloths (E120). Wear
gloves (E186).
3.1.
Inspect splines (7) on drive shaft (4) for wear. If
splines are worn, proceed as follows:
a.
Place a 6 inch metal ruler or equivalent
straightedge along the length of splines (7),
with ruler spanning worn area.
b.
Measure the depth of wear below the face of
the spline. Use a feeler gage.
c.
If spline wear at fan end exceeds 0.020 inch,
replace drive shaft (4) and fan (1.1).
d.
If spline wear at transmission end exceeds
0.020 inch, perform steps 6 thru 9. Replace
aft transmission (8). (Refer to Tasks 6-92 and
6-97.)
e.
The 0.020 inch maximum wear is with no
raised material on both ends of the quill
shaft’s flange. If raised material is found,
remove the material by hand, polishing the
affected area with an oil wet scotchbrite pad.
Remove a minimum amount of material. Do
not exceed 0.020 inch maximum depth.
f.
If wear is less than 0.020 inch, all parts are
satisfactory for continued use.
4.
Install packings (6) on each end of shaft (4).
5.
Pack splines (7) and mating splines in
transmission (8) and fan (1.1) with grease
(E190.1).
6-510
