DeWalt DXCMV5048055 Guide D'utilisation page 20

screws (V) 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 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
all four motor mounting screws. Torque to 20-25 ft-lbs
V
Deflection
tension is achieved, tighten
(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", 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. 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.
6. Tighten the motor drive pulley set screw.
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