John Deere CD4039DF008 - Manual (Page 66)

Maintenance/As required
DPSG,CD03523,45 –19–15JUL99–1/1
REPLACING FAN AND ALTERNATOR BELT
(POWERTECH ENGINES)
CD30769
–UN–01SEP99
Installation on 4 cyl. engines
CD30770
–UN–01SEP99
Installation on 6 cyl. engines
ALT—Alternator
CP—Crankshaft Pulley
FD—Fan Drive
I—Idler Pulley
T—Tensioner
WP—Water Pump
NOTE: Refer to CHECKING BELT TENSIONER SPRING
TENSION AND BELT WEAR for additional
information on the belt tensioner.
1. Inspect belts for cracks, fraying, or stretched out areas.
Replace if necessary.
2. On engines with automatic belt tensioner, release
tension on belt using a breaker bar and socket on
tension arm.
On engines with manual tensioner, loosen cap screws
holding the alternator.
3. Remove poly-vee belt from pulleys and discard belt.
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 (see CHECKING BELT).
6. Start engine and check belt alignment.
50-4
112699
PN=66