Engine Maintenance 9-33
Upper and Lower Fan Belt Replacement and Adjustment
NOTE: Do not remove or install the belts without loosening the components correctly. Belts that are installed by prying them
over the pulleys are likely to fail.
NOTE: The alternator belt must be removed to remove the upper belt.
1. Loosen the alternator adjustment arm bolts and the alternator pivot bolt. Remove the alternator belt.
2. Loosen the jackshaft adjustment arm bolts and the jackshaft angle pivot bolts.
3. Push on the jackshaft adjustment arm and move the jackshaft toward the back of the unit as far as it will go.
4. Loosen the two bolts that fasten the jackshaft to the jackshaft angle until the threaded ends of these bolts are flush with the
nuts welded on the jackshaft angle. These bolts must be loosened so the jackshaft can be moved enough to remove the belts.
5. Loosen the idler and move it toward the front of the unit as far as possible.
6. Remove the lower belt from the jackshaft pulley, the idler pulleys (if equipped) and from the engine (or electric motor) pulley.
7. Remove the upper belt from the jackshaft pulley, the idler, and the blower pulley.
Belt Arrangement – SL 30 Models
1. Jackshaft Adjustment Arm
2. Jackshaft
3. Upper Fan Belt
4. Alternator Belt
5. Alternator Adjustment Arm and Mounting Bracket
6. Idler Pulleys and Tension Bracket (3/99 and After)
7. Idler Pulleys and Tension Bracket (Before 3/99)
8. Lower Fan Belt
9. Water Pump Belt
10. Water Pump Pulley, Adjustable
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