Adjusting Belt Tension; Motor Pulley/Flywheel Alignment - DeWalt DXCMLA3706056 Instruction Manual

removed. Serious injury could occur from contact with moving
parts. Hot surfaces. Risk of burn. Pump head, and surrounding
parts are very hot, do not touch (see the Hot Surfaces identified
in Fig. 2). Allow compressor to cool prior to servicing.
1. Set the Auto/Off lever to
"Off", shut off the main
power disconnect, and
relieve all air pressure
from the air tank.
2. Remove the belt guard
by removing the 5 screws
(N) using a Phillips head
screwdriver.
3. Mark pump position on
saddle.
4. Loosen the motor mounting screws and slide the motor toward
the air compressor.
5. Remove the belt and replace with a new one.
6. See the Adjusting Belt Tension before tightening motor
mounting screws.

Adjusting Belt Tension

1. Slide motor into original position, line the
motor up with the
mark made earlier on saddle.
2. Tighten two outside motor mounting screws enough to hold
the motor in place for checking pulley and flywheel alignment.
3. The belt should deflect 1/2" (13 mm)at midway between the
pulley and the flywheel when a 10 pound (4.6 kg.) weight is
applied at the midway point.
3. When proper belt
N
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 loca-
tion, the grooves of the fly-
wheel and pulley must be
aligned to within 1/16"
(1.6 mm) to prevent exces-
sive 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", shut off the main power discon-
nect, 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.
19
Deflection