HHN-34TVD • RIDE-ON POWER TROWEL — OPERATION MANUAL — REV. #1 (05/08/06) — PAGE 37
7
10
6
8
5
9
4
3
2
1
1. Locate the cone point square head set screw (Figure 33) and
attached jam nut found on the side of the spider assembly.
Figure 33. Spider/Gearbox Removal
HHN 34TVD — MAINTENANCE
Figure 31. Incorrect Spider Plate Alignment
Trowel Arm Adjustment
Figure 32 illustrates the "
correct alignment " for a spider plate
(as shipped from the factory).
Figure 32. Correct Spider Plate Alignment
1
4
2
3
1
2
4
5
6
3
Use the following procedure to check and adjust trowel arms,
and check for worn or damaged components when it becomes
apparent that the trowel is finishing poorly or in need of routine
maintenance.
A
level, clean area to test the trowel prior to and after is essential.
Any unlevel
spots in the floor or debris under the trowel blades
will give an incorrect perception of adjustment. Ideally, a 5 x 5 Ft.
(1.5 x 1.5 Meter) three-quarter inch (19 mm) thick
FLAT steel
plate should be used for testing.
Figure 31 illustrates, "
incorrect alignment", worn spider
bushings or bent trowel arms. Check that the adjustment bolt
is barely touching (0.10" max. clearance) lower wear plate. All
alignment bolts should be spaced the same distance from the
lower wear plate.
■
Are blades wearing unevenly? Is one blade completely
worn out while the others look new?
■
Does the machine have a perceptible rolling or bouncing
motion when in use?
■
Look at the machine while it is running; do the guard rings
“rock up and down” relative to the ground?
Look for the following indications. Trowel arm alignment, worn
spider bushings or bent trowel arms may the cause.
1. Place the trowel in a FLAT, LEVEL area.
2. Pitch the blades as flat as possible. The
adjustment bolts
should all barely make contact with the
lower wear plate on
the spider. If one is not making contact, adjustment will be
necessary. (Item 1, Figure 31).
1
Gearbox
2
Gearbox Shaft
3
Upper Wear Plate
4
Thrust Collar Bearing
5
Thrust Collar
6
Thrust Collar Bushing
7
Lower Wear Plate
8
Jam Nut
9
Spider Plate
10
Set Screw, (Cone Point,
Square Head)
1
Gearbox
2
Trowel Arm
3
Surface
4
Mounting Bar
5
Blade
6
Correct Alignment
1
Adjustment Bolt
2
Lower Wear Plate
3
Surface
4
"Dished" Effect on Finished Concrete
Spider Removal
Remove the spider assembly from the gearbox shaft as follows:
To order go to Discount-Equipment.com
