Multiquip JA-SERIES - Manual (Page 31)

JA-SERIES WALK-BEHIND TROWEL — OPERATION AND PARTS MANUAL — REV. #9 (07/02/10) — PAGE 31
JA-SERIES 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:
a. Locate the cone point square head set screw (Figure 41)
and attached jam nut found on the side of the spider
assembly.
Spider Removal
1. Once it is determined that an adjustment is required, remove
the spider assembly from the gearbox shaft as follows:
Figure 41. Spider/Gearbox Removal
b. 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) and a roll pin. Remove both the
hex head bolt and the roll pin (Figure 42) from the spider
plate.
2. Remove the trowel arm from the spider plate.
Figure 42. Removing Roll Pin
and Zerk Grease Fitting
3. Should 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 is retained inside
the spider plate, carefully remove the bushing.
4. Examine the bronze trowel arm bushing insert (Figure 43),
clean if necessary. Replace bushing if out of round or worn.
Figure 43. Bronze Bushings
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
ROLL
PIN
HEX HEAD
BOLT
(ZERK FITTING)
SPIDER
PLATE