Alternator Belt
Belt Adjustment
Check the alternator belt at the correct service interval as outlined in the Periodic Maintenance Chart.
Stop the machine on a flat level surface. Put the gear selector in Park, stop the engine and exit the vehicle. See the Stopping the Engine section.

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Raise the cargo box.
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The belt tension is correct with 0.3 in (7.6 mm) of belt deflection at the mid span at the top of the belt 1, when 20 lb (89 n) of force is applied to the belt.
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If the belt tension is not correct, loosen the mounting bolt 2 and adjustment bolt 3.
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Move the top of the alternator 4 to tighten the belt.
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Tighten the adjustment bolt to 20 ft-lbs (27 N·m).
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Tighten the mounting bolt to 20 ft-lbs (27 N·m).
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Lower the cargo box.