TM 9-2320-273-20
COOLING SYSTEM.
4-54. WATER PUMP IDLER PULLEY MAINTENANCE (Continued}.
LOCATION/lTEM
ACTION
REMARKS
B. INSTALLATION.
4.
5.
6.
7.
Idler pulley (4).
Idler belt adjusting screw (1).
Washer (2) and nut (3).
Belt (5).
C. OPERATIONAL CHECK.
8. Engine.
9. Idler pulley (4).
10, Engine.
Set into place.
Install.
Screw on finger tight.
a.
b.
Adjust belt tension with
adjusting screw (1 ) until
belt tension gage reads
90/100.
Tighten locknut (3) to
50 Ib-ft (68 N-m) with
a torque wrench.
Start up (see TM 9-2320-
273-10).
Be sure to stay completely clear of fan blades.
Do not reach into fan area while engine is
operating.
Check that belt rides
smoothly on pulley and
that pulley is not slip-
ping.
Shut down (see TM 9-2320-
273-10).
4-220
