DeWalt DXCMLA1983054 Instruction Manual page 19

3. When proper belt tension is achieved, tighten all four motor
mounting screws.
Torque to 20-25 ft-lbs
(27.1–33.9 Nm).
NOTE: Once the engine
pulley has been moved
from its factory set location,
the grooves of the flywheel
and pulley must be aligned
to within 1/16" (1.6 mm)
to prevent excessive belt
wear. Verify the alignment
by performing the following
Motor Pulley/Flywheel -
Alignment.
Motor Pulley/Flywheel Alignment
NOTE: Once the motor pulley has been moved from its factory set
location, the grooves of the flywheel and pulley must be aligned to
within 1/16" (1.6 mm) to prevent excessive belt wear.
The air compressor flywheel and motor pulley must be in-line (in the
same plane) within 1/16" (1.6 mm) to assure belt retention within
flywheel belt grooves. To check alignment, perform the following
steps:
1. Set the Auto/Off lever to "Off", unplug the unit, and relieve all
air pressure from the air tank.
2. Remove belt guard.
3. Place a straightedge
against the outside of
the flywheel and the
motor drive pulley.
4. Measure the distance
between the edge of the belt and the straightedge at points
A1 and A2 in figure. The difference between measurements
should be no more than 1/16" (1.6 mm).
5. If the difference is greater than 1/16" (1.6 mm) loosen the set
screw holding the motor drive pulley to the shaft and adjust
the pulley's position on the shaft until the A1 and A2 measure-
ments are within 1/16" (1.6 mm) of each other.
Deflection
6. Tighten the motor drive pulley set screw.
7. Visually inspect the motor drive pulley to verify that it is per-
pendicular to the drive motor shaft. Points B1 and B2 of Figure
should appear to be equal. If they are not, loosen the setscrew
of the motor drive pulley and equalize B1 and B2, using care
not to disturb the belt alignment performed in step 2.
8. Retighten the motor drive pulley setscrew. Torque to 145–165 in lbs
(16.4–20.3 Nm).
9. Reinstall belt guard.
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.
Inspect Air Lines and Fittings for Leaks
1. Set the Auto/Off lever to "Off", unplug the unit, and relieve all
air pressure from the air tank.
2. Apply a soap solution to all air line fittings and connections/
piping.
3. Correct any leaks found.
IMPORTANT: Even minor leaks can cause the air compressor
to overwork, resulting in premature breakdown or inadequate
performance.
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