Buhler 2425 - Manual (Page 241)

SECTION 3 - LUBRICATION AND MAINTENANCE
3-16
EVERY 10 HOURS OR DAILY
OPERATION 5
Check Air-Conditioner Compressor Belt
Tension
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 procedures based on tractor model:
2290, 2335, 2375 (QSM11) Engine
Loosen the compressor pivot bolt located behind
the compressor next to the engine block. Tighten
the adjustment nut, 1, to increase belt tension.
Torque the pivot bolt to 79 N·m (58 ft. lbs.).
IMPORTANT: Do not adjust belt tension to full
value with the adjusting nut. Belt tension can
increase when the pivot bolt is tightened and,
therefore, reduce belt and bearing life.
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 or on a pulley
as damage to the pulley and belt may result.
NOTE: The air-conditioning compressor
drive belt is supplied by Buhler Versatile.
Contact your Buhler Versatile dealer to
obtain a new belt.
Figure 3-16
1