Engine Maintenance 9-45
SL Compressor Drive Belt Replacement and Adjustment (Model 50)
Please refer to Specifications Section “Drive System” on page 3-4 for TK belt tension gauge tension settings for the
compressor drive belt.
Removal
1. Remove the two (one on each end) lower electric motor mounting bolts.
2. Loosen the remaining four (two on each end) electric motor mounting bolts until the lockwashers disengages. It is important
that these four bolts are not loosened too much.
3. Loosen the adjusting bolt lock nut.
4. Turn the adjusting bolt clockwise to raise the motor until the old belt can be easily removed. Make sure that the motor is not
forced beyond its arc of motion.
5. Remove the compressor drive belt from the pulley on the electric motor.
6. Support the compressor and unbolt the compressor from the flywheel housing (leave the refrigeration lines connected).
7. Slide the compressor assembly away from the flywheel housing.
8. Remove the belt through the gap between the clutch and the flywheel.
Installation
1. Install the belt on the clutch pulley through the gap between the clutch and the flywheel.
2. Place the compressor in position and install the mounting bolts.
3. Place the compressor drive belt on the electric motor pulley.
4. Make sure that the belt is properly engaged in the pulley grooves on the clutch and on the electric motor pulley.
5. Turn the adjusting bolt counterclockwise to lower the motor until the target belt tension is achieved.
6. Turn the belt through five revolutions.
7. Measure the belt tension and readjust if necessary.
8. Tighten the adjusting bolt lock nut.
9. Reinstall the two lower electric motor mounting bolts and tighten all six (three each end) electric motor mounting bolts.
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