Multiquip J36E2 - Manual (Page 29)

J36e2 elecTric WalK-BeHiND TrOWel • OperaTiON aND parTs maNUal — rev. #0 (07/24/12) — page 29
MaintenanCe
elecTric mOTOr iNsTallaTiON
1. Locate the electric motor so its shaft is offset from the
driven shaft according to the dimension J for "C" mount
or dimension L minus J for "Z" mount. Make sure the
shafts are parallel.
2. Place both pulleys on the proper shaft and install the
belt with the manually controlled pulley wide open
(minimum speed position). It should not be necessaryto
use force to mount the pulleys.
If they do not slide on easily, examine the shaft for burrs
and check the diameter. The shaft should be of proper
size (+.0000-0005). Too loose a fit between pulley bore
and the shaft can cause vibration, imbalance and
pounding-out of the pulley bore.
3. Align the drive by placing a straight edge along the
outside rim of the automatic pulley and move either
pulley axially on its shaft until the belt edge is parallel
to the straight edge. See Figure 29.
4. Before starting the drive tighten the set screws and
make sure the torque arm is anchored. Install torque
arm guide (anchor) rod through clip on torque arm.
Secure one end of guide rod to a stationary object.
5. Adjust the tension on the leadscrew by tightening
the set screw in the leadscrew nut . If the leadscrew
creeps in operation, more tension is necessary.
6. In order to obtain the full ratio of a compound drive,
the V-belt should bottom on the manually controlled
pulley shaft when it is at the maximum diameter of the
automatic pulley.
If practical, a take-up allowance should be provided for
on either the driver or driven shaft.
However, the allowable tolerance on belt lengths and
the possibility of belt stretch may require an adjustment
of the center distance from that listed.
NOTICE
Torque arm must be free to slide over guide rod through
the full range of speed adjustments.
NOTICE
lUBricaTiON: The fixed-center compound drive pulley
has oil impregnated sintered bushings on all bearing
surfaces and under normal operating conditions will not
require lubrication for the life of the pulley. Ball bearings
in the manual control are permanently lubed.
DisassemBly
1. Remove the handwheel (Figure 30) from the leadscrew.
Screw in the leadscrew until the front disc comes off
the shaft.
2. The bearing housing will push the lube seal out of
the front disc.
3. The shaft bearing is removed by removing the
retaining ring and pushing against the inside end of
the leadscrew in an arbor press.
4. Remove the disc bearing by pushing against the outer
race of the bearing from the profile end of front disc.
Use extreme care in removing the bearings as they
are easily damaged.
NOTICE
cleaNiNg: Foreign matter may collect in the moving
parts of the pulley causing them to stick or freeze. If
this occurs, disassemble the pulley (see section on
disassembly) and clean the slide disc bushing and shaft
thoroughly with a solvent. After cleaning, relubricate the
pulley by wiping a film of grease on all bearing surfaces.
NOTICE
Before the parts are removed, they should be line
marked so they can be reassembled in the same order.
Reassemble all the parts onto the pulley shaft in the
reverse sequence in which they were removed for
placement under the arbor press.
HANDWHEEL
LEAD SCREW NUT ASSY.
SLIDE FACE BEARING
SET SCREW
LEAD SCREW
STOP NUT
BEARING SEAT
WASHERS
BEARING SEAT
FLEX-LOC NUT
TORQUE ARM
ASSY
SLIDE DISC
RETAINING
RING
SHAFT BEARING
SET SCREW
BEARING HOUSING
COTTER PIN
COTTER PIN
LUBE SEAL
SET SCREW
COTTER PIN
SET SCREW
SET SCREW
SHAFT DISC
BUSHING
Figure 30. Drive Pulley
Components