Service as Required Replacing Fan and Alternator Belts 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. RG11950 –UN–07NOV01 2. To replace belt with automatic tensioner, release tension on belt using a breaker bar and socket on tension arm. 290 mm (11.4 in.) Fan Height and Lower* 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. RG11951 –UN–07NOV01 4. Install new belt, making sure belt is correctly seated in all pulley grooves. Refer to belt routing at right for your application. 338 mm (13.3 in.) Fan Height and Higher Without Freon Compressor* 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.
A—Alternator CSP—Crankshaft Pulley FC—Freon (A/C) Compressor FD—Fan Drive I—Idler Pulley T—Tensioner CP—Coolant Pump RG11952 –UN–07NOV01 402 mm (15.8 in.) Fan Height With Freon Compressor* OURGP11,000013B –19–21NOV03–1/1 40-10 021604 PN=183