Multiquip HPHA36C5H - Manual (Page 31)

HPHA36C5H WALK-BEHIND TROWEL — OPERATION AND PARTS MANUAL — REV. #3 (07/06/10) — PAGE 31
HPHA36C5H TROWEL — MAINTENANCE
■ Does the trowel have a perceived rolling or bouncing
motion when in use?
■ Look at the trowel while it is running, does the guard
ring “rock up and down” relative to the ground?
2. Start engine, and bring trowel blades up to full speed and look
for the following conditions:
1. Locate the cone point square head set screw (Figure 40) and
attached jam nut found on the side of the spider assembly.
Spider Removal
If an adjustment is required, remove the spider assembly from
the gearbox shaft as follows:
Figure 40. Spider/Gearbox Removal
2. Loosen the jam nut and cone point square head set screw,
and carefully lift the upper trowel assembly off of the spider
assembly. A slight tap with a rubber mallet may be necessary
to dislodge the spider from the main shaft of the gearbox.
Trowel Arm Removal
1. Each trowel arm is held in place at the spider plate by a hex
head bolt (zerk grease fitting). Remove the hex head bolt
(Figure 41) from the spider plate.
2. Remove the trowel arm from the spider plate.
Figure 41. Removing Roll Pin
and Zerk Grease Fitting
SPIDER
PLATE
CONE POINT
SQUARE HEAD
SET SCREW
JAM
NUT
GEARBOX
UPPER
WEAR PLATE
THRUST
COLLAR
BEARING
THRUST
COLLAR
BUSHING
LOWER
WEAR PLATE
THRUST
COLLAR
GEARBOX
SHAFT
3. If the trowel arm inserts (bronze bushing ) come out with the
trowel arm, remove the bushing from the trowel arm and set
aside in a safe place. If the bushing remains inside the spider
plate, carefully remove the bushing.
4. Examine the bronze trowel arm bushing insert (Figure 42),
and clean if necessary. Replace the bushing if it is out of round
or worn.
Figure 42. Bronze Bushings