TM 5-4310-386-14
5-32. Cooler Air Blower (Cont).
b.
Repair. (figure 5-49)
(1)
Remove cooler air blower (para. a. above).
(2)
Remove bolt (1), washer (2), and nut (3).
(3)
Remove pulley (4), impeller (5), thrust washer (6), and bearing shaft (7).
(4)
Remove circlip (8) and press out the two grooved ball bearings (9) and (10) and spacer sleeve (11) from
housing (12).
WARNING
Dry cleaning solvent PD-680 used to clean parts is potentially dangerous to personnel and
property. Avoid repeated and prolonged skin contact. Do not use near open flame or excessive
heat. Flash point of solvent is 138°F (60°C).
(5)
Clean all items, except bearing, with dry cleaning solvent and dry thoroughly.
(6)
Inspect ball bearing (9) and (10) for any corrosion or pitting and replace if worn or otherwise damaged.
(7)
Inspect housing (12) for scoring or burred and replace if cracked or otherwise damaged.
(8)
Inspect impeller for cracks and replace if damaged.
(9)
Pack bearing (9) and (10) with wheel bearing grease.
(10)
Install bearing (9) with the enclosed side to the front.
(11)
Install bearing shaft (7) in groove ball bearing (10) and slide spacer sleeve (11) on bearing shaft (7).
(12)
Half fill the space between spacer sleeve (11) and casing wall with wheel bearing grease.
(13)
Press in the second ball bearing (10) so that enclosed side seats against spacer sleeve (11).
(14)
Install circlip (8) in groove.
(15)
Install the thrust washer (6) on bearing shaft (7).
(16)
Install pulley (4) and impeller (5) and secure with bolt (1), washer (2), and nut (3).
(17)
Install cooler air blower (para. a. above).
FOLLOW-ON MAINTENANCE
Install V-belts (para. 4-41).
5-144
