MULTIQUIP Whiteman series Operation Manual page 44

Once it has been determined that blade pitch adjustment
is required, do the following:
1. Place the trowel on a flat, level surface, with blocks
under the main guard ring for support. Any uneven
spots in the floor or debris under the trowel blades will
cause an incorrect perception of adjustment. Ideally,
a 5 ft. × 5 ft. (1.5 m × 1.5 m), 3/4 inch-thick, flat steel
plate should be used.
2. Pitch the blades as flat as possible (Figure 65).
The pitch adjustment bolts should barely contact
(0.10 inch maximum clearance) the lower wear plate.
All adjustment bolts should be spaced the same
distance from the lower wear plate. If any one of the
bolts does not make contact, adjustment is necessary.
GEARBOX
STEEL TEST
SURFACE
PITCH
ADJUSTMENT
BOLT
Figure 65. Blades Pitched Flat (Correct)
3. Adjust the 'high' bolts down to the level of the bolt that
is not touching, or adjust the 'low' bolt up to the level of
the higher ones. Whenever possible, adjust the 'low' bolt
up to the level of the rest of the bolts. This is the fastest
method, but it may not always work. After adjustment,
verify that the blades pitch correctly.
NOTICE
Incorrectly adjusted blades will often be unable to pitch
flat. This can occur if the adjustment bolts are raised
too high. Conversely, adjustment bolts that are too low
will prevent the blades from being pitched high enough
for finishing operations.
If the trowel still finishes poorly after blade pitch adjustment,
the blades, trowel arms, and trowel arm bushings should
be inspected for improper adjustment, wear, or damage.
Figure 66 illustrates incorrect spider plate alignment due
to improper adjustment, worn spider bushings, or bent
trowel arms.
PAGE 44 — J3036H55 WALK-BEHIND TROWEL • OPERATION MANUAL — REV. #0 (06/27/18)
TROWEL
ARM
MOUNTING
BAR
BLADE
LOWER
WEAR PLATE
PITCH
ADJUSTMENT
BOLT
'DISHED' EFFECT ON
NO
FINISHED CONCRETE
Figure 66. Blades Pitched Flat (Incorrect)
Spider Removal
1. Locate and loosen the cone point square head set
screw and attached jam nut on the side of the spider
assembly (Figure 67).
GEARBOX
GEARBOX
SHAFT
THRUST COLLAR
WITH BUSHING
JAM NUT
CONE POINT
SQUARE HEAD
SET SCREW
Figure 67. Spider Removal
2. Carefully lift the upper trowel/gearbox assembly off of
the spider assembly. A light tap with a rubber mallet
may be necessary to dislodge the spider from the main
shaft of the gearbox.
MAINTENANCE
LOWER
WEAR PLATE
YOKE
ARM
THRUST COLLAR
BEARING
WEAR RING
LOWER
WEAR PLATE
SPIDER
PLATE