Belts - Inspect/Adjust/Replace
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D10R Track-Type Tractor
[SEBU6969]
BASIC ENGINE
SERPENTINE/V-BELTS
D10R Track-Type Tractor
Belts - Inspect/Adjust/Replace
1.1. Air Conditioner Belt
2.1. Alternator Belt
Air Conditioner Belt
- Inspect the condition of the compressor drive belt. The belt should deflect 14 to 20 mm (.56 to .81 inch) under 110 N (25 lb) of force. Use a 144-0235 Belt Tensioner Gauge in order to measure the tension.
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Illustration 1 | g00579335 |
- Remove the belt guard.
- Loosen the compressor mounting bolts and the adjusting bracket bolt.
- To achieve the correct belt tension, move the compressor inward or move the compressor outward. Tighten the compressor mounting bolts and the adjusting bracket bolt. Recheck the belt adjustment.
- If necessary, repeat Step 2 to Step 4. Check the cab air filters. If necessary, clean the filter elements.
- If poor cooling is experienced, turn off the air conditioner. Stop the engine. Consult your Cat dealer for air conditioner system service.
Alternator Belt
- Open the access door (if equipped) on the left-hand side of the machine.
- Inspect the condition of the alternator belt. The belt should deflect 14 to 20 mm (.56 to .81 inch) under 110 N (25 lb) of force. Use a 144-0235 Belt Tension Gauge in order to measure the tension.
Note: Even if only one belt is worn or damaged, replace the belts in sets when applicable.
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Illustration 2 | g00039315 |
- Loosen the alternator mounting bolts. Loosen the adjusting locknut.
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Illustration 3 | g00039317 |
- Turn the adjusting nut until the correct belt tension is reached. To achieve the correct belt adjustment, move the alternator inward or move the alternator outward, as required.
- Tighten the adjusting locknut. Tighten the alternator mounting bolts.
- If new belts are installed, check the belt adjustment again after 30 minutes of engine operation.
- Close the access door (if equipped).
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