TM 5-3805-280-24-2
Cooling System
INSPECT AND INSTALL FAN ASSEMBLY
25
24
Several fan drive ratios are available allowing a closer
matching of fan speed to application.
1. Inspect fan blades for bent or damaged condition. Bent
blades reduce cooling system efficiency and throw the
fan out of balance. Replace fan if blades are bent or
damaged.
NOTE: Engines may be equipped with either suction-type
fan or a blower-type fan, depending on
application.
2. Install fan on pulley or pulley hub. Tighten cap screws
(with lock washers) to specifications.
Fan-to-Pulley Hub M8 Cap Screws--Specification
Torque ............................................................................. 35 Nm (26 lb-ft)
Fan-to-Pulley Hub M10 Cap Screws--Specification
Torque ............................................................................. 70 Nm (52 lb-ft)
RG,25,JW7550
1920NOV971/1
REMOVE AND INSPECT FAN DRIVE
ASSEMBLY
Fan assemblies can be mounted in several positions to
accommodate different application and engine cooling
requirements.
1. Remove fan.
2. Release tension on belt and remove poly-vee belt from
Continued on next page
RG,25,JW7549
1920NOV971/4
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