Pulley And Fly Wheel Alignment; Air Compressor Pump Intake And Exhaust Valves; Inspect Air Lines And Fittings For Leaks; Additional Service - DeWalt DXCMWA5591056-CA Instruction Manual

9. Reconnect spark plug wire.

Pulley and Fly wheel Alignment

The air compressor flywheel and engine pulley must be in-line
(in the same plane) within 1/16" (1.6 mm) to ensure belt retention
within flywheel belt grooves. To check alignment:
1. Ensure engine ON/OFF switch (C) is in the OFF Position.
2. Allow the unit to cool.
3. Disconnect spark plug wire.
4. Drain air tank.
5. Remove belt guard.
6. Place a straightedge
(AF) against the
outside of the flywheel
(AG) and the engine
drive pulley (AH).
7. Measure the distance between the edge of the belt (AI) and
the straightedge at points A1 and A2 in Figure. The difference
between mea sure ments should be no more than 1/16"
(1.6 mm).
8. If the difference is greater than 1/16" (1.6 mm), loosen the
setscrew holding the engine drive pulley to the shaft and
adjust the pulley's position on the shaft until the A1 and A2
mea sure ments are within 1/16" (1.6 mm) of each other.
9. Tighten the engine drive pulley setscrew. Torque to 145–180 in.-
lbs. (16.4 – 20.3 Nm).
10. Visually inspect the engine drive pulley to verify that it is
perpendicular to the drive motor shaft. Points B1 and B2 of
Figure should appear to be equal. If they are not, loos en the
setscrew of the engine drive pulley and equal ize B1 and B2,
using care not to disturb the belt align ment per formed in Step 8.
A1 A2 B1
AG
AJ
AH
AF
A1 A2 B1
11. Retighten the engine drive pulley set screw. Torque to
145– 180 in.-lbs. (16.4–20.3 Nm).
12. Reinstall belt guard.
13. Reconnect spark plug wire.
Air Compressor Pump Intake and Exhaust
Valves
Once a year have a Trained Service Technician check the air com-
pressor pump intake and exhaust valves.
B2

Inspect Air Lines and Fittings for Leaks

1. Ensure engine START/RUN/OFF switch (C) is in the OFF
Position.
2. Allow the unit to cool.
3. Disconnect spark plug wire.
B2
4. Apply a soap solution to all air line fittings and connections/pip-
ing.
5. Correct any leaks found.
6. Reconnect spark plug wire.
IMPORTANT: Even minor leaks can cause the air compressor
to overwork, resulting in premature breakdown or inadequate
performance.
Air compressor Head Bolts - Torquing
The air compressor pump head bolts should be kept properly
torqued. Check the torques of the head bolts after the first five
hours of operation. Torque to 32-37 ft.-lbs. (43.4-50.2 Nm).

Additional Service

Disassembly or service of the air compressor beyond what is cov-
ered in this manual is not recommended. If additional service is
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