MULTIQUIP Whiteman Series Operation Manual page 43

Checking Trowel Arm Straightness
Trowel arms can be damaged by rough handling (such as
dropping the trowel on the pad), or by striking exposed
plumbing, forms, or rebar while in operation. A bent trowel
arm will prevent the trowel from operating with smooth,
fluid rotation. If bent trowel arms are suspected, check for
flatness as shown below. Refer to Figure 46.
Lever Mounting Slot
(Left Arm Shown)
Roll Pin Hole
Trowel Arm
Round Shaft Section
Hex-Shaft Section
Figure 46. Trowel Arm
1. Use a thick steel plate, granite slab, or any surface
which is true and flat (Figure 47), to check all six sides
of each trowel arm for flatness.
FEELER GAUGE
(.005 in./0.127 mm)
FEELER GAUGE
(.004 in./0.10 mm)
Figure 47. Checking Trowel Arm Flatness
2. Check each of the six sides of the trowel arm (hex
section). A feeler gauge of .004" (0.10 mm) should
not pass between the flat of the trowel arm and the
test surface along its length on the test surface. See
Figure 47.
3. Check the clearance between the round shaft and the
test surface as one of the flat hex sections of the arm
rests on the test surface. Rotate the arm to each of the
flat hex sections and check the clearance of the round
shaft. Use a feeler gauge of .005" (0.127 mm). Each
section should have the same clearance between the
round of the trowel arm shaft and the test surface.
4. If the trowel arm is found to be uneven or bent, replace
the trowel arm.
HHNG5 RIDE-ON TROWEL • OPERATION MANUAL — REV. #1 (07/05/18) — PAGE 43
Blade Attachment
Bolt Hole (1 of 3)
Flat of Hexagonal-Shaft
(Top of Arm)
Trowel Arm
TROWEL
ARM
SURFACE
Trowel Arm Adjustment Fixture
Shown in (Figure 48) is the adjustment fixture with a trowel
arm inserted. As each trowel arm is locked into the fixture,
the arm bolt is adjusted to where it contacts a stop on the
fixture. This will consistently adjust all of the trowel arms,
keeping the finisher as flat and evenly pitched as possible.
1. Locate the trowel arm adjustment fixture P/N 9177.
"DISTANCE"
Figure 48. Trowel Arm Adjustment Tool Side View
2. Ensure the fixture arm is in the proper setting (up
or down) for your trowel arm rotation as shown in
Figure 49.
FLAT
TEST
Figure 49. Trowel Arm Adjustment Setup
NOTICE
For arms with CLOCKWISE blade rotation, place the
fixture arm in the UP position (Figure 49A). For arms with
COUNTERCLOCKWISE blade rotation, place the fixture
arm in the DOWN position (Figure 49B).
MAINTENANCE
ADJUSTMENT
BOLT
SIDE VIEW
LOCKING
NUT
FIXTURE
ARM