Marshalltown SG87SH SURFACE SHARK Floor Grinder - Manual (Page 31)

SG87Sh SuRFACE ShARK FLooR GRINDER PAGE 31
4) While gripping the cutout in the external weight,
slide the weight/belt guard away from the electric motor
approximately 1 inch. This will release the cover from
the forward catch mechanism.
5) Remove the weight/belt guard from the main frame.
Clean the inside of the belt guard with an appropriate
solvent. Store in an appropriate location.
Observe all applicable safety precautions for the
solvent.
6) using the ratchet, long extension and 9/16 socket,
loosen the hexagon nuts that retain the electric motor
mounting plate to the main frame. FIGuRE 24.
7) using the 9/16 inch wrench, loosen the 3/8 inch
hexagon jam nuts from the motor mounting plate.
FIGuRE 25.
8) With the ratchet and 9/16 inch socket, rotate the
mounting plate take-up screws counterclockwise to
loosen the v-belt and allow the electric motor to slide
forward toward the front of the main fame. FIGuRE
25.
FIGuRE 24
FIGuRE 25
9) Remove the worn v-belt from the pulleys. Inspect
the electric motor and transmission pulleys for wear
and damage.
a) Do not install a replacement v-belt if any pulley has
an excessively worn groove. Such a pulley should be
replaced with a factory approved replacement part to
insure proper belt fit. operating a replacement v-belt
in a worn pulley groove will accelerate wear, reduce
horsepower and torque levels while significantly
reducing component service life.
b) If a replacement pulley is required, remove and
reinstall with a factory approved replacement part. Refer
to CHECKING V-BELT TENSION AND ALIGNMENT
for information relative to maintaining proper v-belt
tension and pulley alignment.
c) A v-belt should never be forced over a pulley. More
belts are broken from this cause than from actual
failure in service.
d) Install the replacement v-belt, Part# Mb45.
e) Keep the belt as clean and free of foreign materials
as possible. Do not use belt dressing.
10) using the ratchet and 9/16 inch socket, rotate
the motor mount take-up screws clockwise until the
v-belt has enough tension to not allow it to fall off the
pulleys.
11) Refer to CHECKING V-BELT TENSION AND
ALIGNMENT for information relative to maintaining
proper v-belt tension and pulley alignment.
12) When correct v-belt tension and pulley alignment
is attained, tighten the hexagon nuts that retain the
motor mount to the main frame.