26
maintenance
FIG 8
PULLEY ALIGNMENT
To check pulley alignment, remove the belt guard and place a
straightedge (see A) against the pump flywheel (see B) (See Fig.
9). Measure and record the distance from the straightedge to the
edge of the drive belt at point C. Then measure the distance from the
straightedge to the edge of the drive belt again at points D and E. Both
distances should be the same as at point C. If D or E are different from C,
there is a misalignment which must be corrected before the compressor
is run. To correct a pulley misalignment, use the following procedure.
1. Remove the belt guard.
2. Loosen the motor mounting bolts.
3. Loosen the setscrew on the motor pulley.
4. Align the motor pulley with the pump flywheel (C = D = E).
5. Retighten the motor pulley setscrew.
6. Adjust the proper belt tension.
7. Retighten the motor mounting bolts.
8. Reinstall the belt guard. All moving parts must be guarded.
FIG 9
