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PAGE 34 — EHTX44Y RIDE-ON TROWEL • OPERATION MANUAL — REV. #0 (01/16/13)
MAINTENANCE
If, after making Blade Pitch adjustments the machine is
still finishing poorly, blades, trowel arms, and trowel arm
bushings may be suspect and should be looked at for
adjustment, wear, or damage. See the following sections.
Stabilizer Ring Removal
5. To remove the outer stabilizer ring, (Figure 32), remove
the six bolts at the end of each spider arm.
Figure 32. Stabilizer Ring Removal
6. Examine stabilizer ring for out of round or bends. If ring
is damaged, replace ring. If ring is found to be correct
with no damage, set aside.
Changing Blades
It is recommended that ALL the blades on the entire
machine are changed at the same time. If only one or
some of the blades are changed, the machine will not
finish concrete consistently and the machine may wobble
or bounce.
1. Place the machine on a flat, level surface. Adjust
the blade pitch control to make the blades as flat as
possible.
2. Note the blade orientation on the trowel arm. This is
important for ride-on trowels as the two sets of blades
counter-rotate. Lift the machine up, placing blocks
under the main guard ring to support it.
3. Remove the bolts and lock washers (Figure 33) that
secure the blade to the trowel arm, then remove the
blade.
STABILIZER
RING
HEX NUT
ROD END
FLAT
WASHER
HEX CAP
SCREW
Figure 33. Blade Removal
4. Wire brush any build-up of concrete from all six sides
of the trowel arm. This is important to properly seat the
new blade. Repeat for the remaining arms.
5. Install the new blade, maintaining the proper orientation
for direction of rotation.
6. Reinstall the bolts and lock washers.
7. Torque to 9 ft. lbs. (12.2 N
.
m)
8. Repeat steps 2-7 for all remaining blades.
HEX CAP
SCREW
TROWEL
ARM
WASHER