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OURGP11,000013B –19–27JUL06–1/1
Replacing Fan and Alternator Belts
RG11950 –UN–07NOV01
290 mm (11.4 in.) Fan Height and Lower*
RG11951 –UN–07NOV01
338 mm (13.3 in.) Fan Height and Higher Without Freon
Compressor*
RG11952 –UN–07NOV01
402 mm (15.8 in.) Fan Height With Freon Compressor*
A—Alternator
CSP—Crankshaft Pulley
FC—Freon (A/C) Compressor
FD—Fan Drive
I—Idler Pulley
T—Tensioner
CP—Coolant Pump
Refer to CHECKING BELT TENSIONER SPRING
TENSION AND BELT WEAR in Lubrication and
Maintenance/500 Hour/12 Month Section for additional
information on the belt tensioner.
1. Inspect belts for cracks, fraying, or stretched out areas.
Replace if necessary.
2. To replace belt with automatic tensioner, release
tension on belt using a breaker bar and socket on
tension arm.
To replace belt with manual tensioner, release tension
at belt tensioner (See MANUAL BELT TENSIONER
ADJUSTMENT in Lubrication and Maintenance/500
Hour/12 Month Section.)
3. Remove poly-vee belt from pulleys and discard belt.
NOTE: While belt is removed, inspect pulleys and
bearings. Rotate and feel for hard turning or any
unusual sounds. If pulleys or bearings need
replacement, see your John Deere dealer.
4. Install new belt, making sure belt is correctly seated in
all pulley grooves. Refer to belt routing at right for your
application.
5. Apply tension to belt with tensioner. Remove socket.
6. Install fan guard if removed.
7. Start engine and check belt alignment.
*Measured from crank centerline to fan drive center.
40-10
080706
PN=183