ARMY TM 9-6115-641-24
AIR FORCE TO 35C2-3-456-12
2-74-3. Installation.
When installing engine cooling fan use the following procedures to ensure that
the fan is not Installed backward. Failure to follow these directions could result
in the engine overheating and damage to the generator set.
a.
Stand facing front of engine and rotate fan clockwise. Leading edges of fan blades must be facing rearward.
Install fan (32, Figure 2-20) with washer (31) and 1-1/2 in. hex nut (30). Torque hex nut (30) to 22 ft-lbs (30
Nm).
b. Install shroud halves (15) with bolts (13) and nuts (14).
c.
Install fan guards (4) with bolts (2) and washers (3).
d. Connect negative battery cable and close access doors.
2-75. FAN BELT.
2-75-1. Inspection.
a.
Shut down generator set.
b. Open engine access doors and disconnect negative battery cable.
c.
Inspect for loose, frayed or torn fan belt (33, Figure 2-20).
d. Connect negative battery cable and close engine access doors.
2-75-2. Removal.
a.
Shut down generator set.
b. Open both engine access doors and disconnect negative battery cable.
c. Remove bolts (2, Figure 2-20), washers (3), and right side fan guard (4).
d. Remove bolts (13), nuts (14), and shroud halves (15).
e.
Loosen alternator mounting hardware, (1 and 4, Figure 2-5), to relieve tension from fan belt (33, Figure 2-20).
f.
Move alternator until fan belt (33) can slip over alternator pulley.
g.
Remove fan belt (33) from crankshaft pulley and water pump pulley.
Fan is not sharp, but can still cause personal injury.
h. Slip fan belt (33) between cooling fan (32) and radiator (12).
2-75-3. Installation.
a. SIip fan belt (33, Figure 2-20) between cooling fan (32) and radiator (12).
b. Install fan belt (33) onto water pump pulley, crankshaft pulley, and alternator pulley.
c.
Adjust fan belt (33), paragraph 2-75-4, steps e and f.
d. Install right side fan guard (4) with bolts (2) and nuts (3).
e.
Install shroud halves (15) with bolts (13) and nuts (14).
f.
Connect negative battery cable and close access doors.
2-108
