Adjusting Belt Tension; Motor Pulley/Flywheel Alignment - DeWalt DXCMV5018055 Instruction Manual

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 discon-
nect, and relieve all air pressure from the air tank.
2. Remove the front of the
beltguard by removing
the screws and wash-
ers (R) using a Torx T25
bit.
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 fly-
wheel 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
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
R
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", 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.
Deflection
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).
19
proper belt tension is achieved, tighten