Service the Air Conditioner Belt—Cab

Avoid injury! Rotating parts can catch fingers, loose clothing, or long hair. Wait for engine and all moving parts to stop before leaving operator station to adjust or service machine.

Equipment: JDG529 or JDST28 Belt Tension Gage.

Checking Belt Tension

1. Park machine safely. (See Parking Safely in the Safety section.)

2. Allow engine to cool.

3. Raise hood.

4. Remove right side panel. (See Removing and Installing Side Panels in the Miscellaneous section.)

5. 
   LV19575-UN-30OCT13

   Remove Belt

   A - Belt

   B - Adjusting Bolt

   C - Adjustment Pulley Nut

   Use belt tension gage or apply moderate thumb pressure to belt (A) halfway between the pulleys.

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6. Adjust belt tension if not within specifications.

   Belt Tension	Force	75 LB (or 334 N)
   Belt Deflection	Inward Pressure	9 mm (3/8 in.)

Adjusting Belt Tension

1. Loosen adjustment pulley nut (C).

2. Turn adjusting bolt (B) clockwise to tighten counterclockwise to loosen the air conditioner belt.

3. Adjust belt tension to specifications.

4. Tighten adjustment pulley nut (C).

5. Recheck belt tension.

6. Install right side panel.

7. Lower hood.

Replacing Belt

Replace air conditioner belt if excessive wear, damage, or stretching is detected.

1. Park machine safely. (See Parking Safely in the Safety section.)

2. Allow engine to cool.

3. Raise hood.

4. Remove right side panel.

5. Loosen adjustment pulley nut (C).

6. Loosen adjusting bolt (B) to release tension on the belt.

7. Remove belt from air conditioning compressor pulley, idler pulley, and crankshaft pulley.

8. Install new belt in reverse order of removal.

   
   LV19590-UN-30OCT13

   Belt Routing

   Belt Routing
   1	Air Conditioning Compressor Pulley
   2	Idler Pulley
   3	Crankshaft Pulley
   4	Adjustment Pulley

   If necessary the idler pulley bolt can be loosened and the idler pulley moved inboard in the slot. After belt is positioned around pulleys, the idler pulley should be moved outboard to take up the belt slack, and the idler pulley bolt tightened.

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9. Check belt tension (Refer to Adjusting Belt Tension in this section.)

10. Install right side panel.

11. Lower hood.