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TM 9-2320-360-34-1
5-6. FAN CLUTCH REPAIR (CONT)
d.
Testing
(1)
Install tool no. 5 (1) and two tools no. 11
(2) on fan hub (3) with two 1/2-13 x 2 in.
(51 mm) screws (4).
CAUTION
Jaws of vise must not touch fan
mounting hub or fan mounting hub
and attaching parts may be damaged.
(2)
Place clutch assembly (5) in vise with soft
jaws.
WARNING
When using compressed air, be sure
to use effective chip guarding and
personal
protective
equipment
(goggles/shield, gloves, etc.) to avoid
personal injury.
(3)
Apply compressed air at 100 psi (690 kPa)
and spin fan hub (3) four times. Fan hub
should require approximately 240 lb-in.
(27.2 Nm) or less to turn.
(4)
Release air pressure.
(5)
Turn fan hub (3) with socket extension
installed in 1/2 in. drive hole in tool no. 5
(1). Fan hub should require a minimum of
140 Ib-ft (189.84 Nm) to turn.
(6)
Remove tool no. 5 (1), two tools no. 11
(2), and two 1/2-13 x 2 in. (51 mm)
screws (4) from fan hub (3).
e.
Follow-On Maintenance
Install fan clutch (TM 9-2320-360-20).
5-40
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