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TM 10-3930-643-20
ENGINE, FUEL, EXHAUST AND COOLING TROUBLESHOOTING AND MAINTENANCE. (cont)
4-33.
Drive Belts. (Sheet 2 of 5)
REMOVAL
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Using a 9/16” open end wrench,
remove fan guard (1) from front of
engine.
U s i n g a 1 / 2 ” s o c k e t a n d s o c k et
wrench handle, remove four bolts (2)
and washers (3).
U s i n g a f l a t t i p s c r e w d r i v e r,
disconnect terminal (4).
Using a 9/16” socket and socket
wrench handle, remove ground
cable
(5) and brace (6).
R e m o v e t w o s c r e w s , c o v e r , t wo
screws,
l o c k w a s h e r s , p l a t e a nd
s h i e l d ( 7 ) f r o m r e a r , l e f t s i d e of
a l t e r n a t o r.
Using a 9/16” socket and 5/8” open
end wrench, loosen bolt (8) and nut
(9)*
Move alternator
to take tension
pump pulley.
(10) toward engine
off fan and water
L o o s e n f o u r n u t s ( 1 1 ) f r o m a ir
compressor (12).
Move air compressor
(12) toward
engine to take
tension
o f f
a ir
compressor drive belt (13).
Slip air compressor drive belt (13)
off compressor
p u l l e y,
v i b r a t i on
damper pulley and fan and water pump
pulley. Hold fan shroud as high as
possible and work air compressor
drive belt (13) over top fan blade.
Turn fan and work air compressor
drive belt (13) over next fan blade.
Repeat until air compressor drive
belt (13) has been worked over all
fan blades. Remove air compressor
drive belt (13) from inside shroud
between two fan blades.
Go to sheet 3
4-142
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