TM 10-4320-307-24
3-25
FAN HUB AND BRACKET REPAIR (CONT).
ASSEMBLY:
1.
Install new retaining ring (1) into groove in fan pulley
(2) bore.
2.
Install outer race of roller bearing (3) into fan bracket
end of fan pulley (2) bore. Push race into bore until
race is against retaining ring (1).
3.
Install bearing spacer (4) into opposite bore of fan
pulley (2). Align holes in spacer with grease holes in
hub of fan pulley.
NOTE
Do not damage retaining ring when you push the race
against the spacer.
4.
Install outer race of roller bearing (5) into spacer end
of fan pulley (2) bore. Push race into bore until It is
against retaining ring (1).
5.
Lubricate rear roller bearing (3) with grease and install
bearing into outer race. Push seal (6) into bore so
that it is even with edge of bore or not more than
0.020 inch (0.51 mm) below edge. Make sure lip of
seal is toward bearing.
6.
Apply a coat of clean lubricating oil to inside diameter
of seal (6). Slide shaft (7) through seal, bearing (3),
and fan pulley (2).
7.
Install inner spacer (8) over shaft (7) and into outer
spacer (4).
8.
Lubricate front roller bearing (5) with grease and
install bearing into outer race.
9.
Install washer (9) and locknut (10) to shaft (7). Tighten
locknut to 145 to 155 ft-lbs (196 to 210 N•m) torque.
Rotate fan pulley (2) while tightening locknut.
10.
Install grease fitting into one of the threaded holes in fan pulley (2) and fill bore with grease until it is 60 to 70
percent full.
11.
Remove grease fitting and install two pipe plugs (11). Tighten to 5 to 7 ft-lbs (7 to 10 Nm) torque.
12.
Install fan pilot spacer (12), fan spacer gasket (13), using six lockwashers (14) and capscrew (15),
and ship fan
hub and bracket to unit maintenance.
3-75
