Buhler 2375, 2335, 2290 manual 2360, 2425 N14 Engine

SECTION 3 - LUBRICATION AND MAINTENANCE

EVERY 10 HOURS OR DAILY

OPERATION 6

Check the Alternator Drive Belt Tension

2290, 2335, 2375 QSM11Engine

The QSM11 engines use a spring-loaded idler, (N14 illustrated) to keep a constant tension on the alternator belt. This is a shared drive using the fan belt. See operation 3, for details on checking tension.

2360, 2425 (N14) Engine

Use a belt tension gauge to check and/or adjust belts, or use the firm thumb pressure and deflection method. With firm thumb pressure, a properly adjusted belt should deflect 0.8 mm (1/32″) for each 25 mm (1”) of span between pulleys. If the belt requires adjustment, use the following procedure:

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	Figure 3-18

Loosen the pivot bolt, 1, which secures the alternator to the engine. Loosen the adjuster clamp bolt, 2, and locknut, 3. Adjust the belt tension by tightening the adjuster bolt, 4. Torque the adjuster clamp bolt to 79 N⋅m (58 ft. lbs.). (Recheck the belt tension.) Torque the locknut to

79N⋅m (58 ft. lbs.) and pivot bolt to 61 N⋅m (45 ft. lbs.).

IMPORTANT: Do not adjust belt tension to full value with the adjusting screw. Belt tension can increase when the adjuster clamp bolt is tightened and, therefore, reduce belt and bearing life.

NOTE: 2360, and 2425 tractor models use the same alternator adjustment bracket.

If the belt requires replacement, the adjustment should be backed off all the way, and the belt slipped up around the pulleys. Install the new belt by reversing the procedure and tension it as detailed above. Never pry a belt off a pulley as damage to the pulley may result.

NOTE: The alternator drive belt is supplied by Buhler Versatile. Contact your Buhler Versatile dealer if a new belt is required.

NOTE: Refer to your Cummins Engine Manual for more information regarding belt replacement, wear guidelines, and pulley alignment.

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