CA4HM WALK-BEHIND TROWEL — OPERATION MANUAL — REV. #3 (10/28/10) — PAGE 25
Figure 22 Worn Spider Plate
Trowel Arm Adjustment Procedure
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"
(127mm x 127mm), 0.75 inch (19 mm) thick
flat
steel plate should
be used for testing.
1. To determine which blades need adjustment, place the
trowel in the test area (0.75 inch [19 mm] thick plate) and look
for the following conditions:
■
Pitch the blades as flat as possible and look at the
adjustment bolts
. They should all just make contact
with the
lower wear plate
on the spider. If you can see
that one of them is not making contact, some adjustment
will be necessary.
■
Is the machine wearing out blades unevenly (i.e. one
blade is completely worn out while the others look new)?
Figure 22 below illustrates "
worn spider or bent trowel arms
".
Check to see that 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.
Figure 23 below illustrates the "
correct alignment
" for a spider
plate (as shipped from the factory).
Figure 23. Correct Spider Plate Alignment
MAINTENANCE SCHEDULE
Daily (8-10 Hours)
1.
Check the oil level in the engine crankcase and gear box,
fill as necessary.
2.
Check V-belt.
Weekly (50-60 Hours)
1.
Relube arms, thrust collar and clutch
2.
Replace blades if necessary.
3.
Check and clean or replace the engine air filter as
necessary.
4.
Replace engine oil and filter as necessary, see engine
manual.
Monthly (200-300 Hours)
1.
Remove, clean, reinstall and relube the arms and thrust
collar. Adjust the blade arms.
2.
Remove, clean, reinstall clutch.
Yearly (2000-2500 Hours)
1.
Check and replace if necessary the arm bushings, thrust
collar bushings and shaft seals.
2.
Check pitch control cables for wear.
3.
Adjust blade speed.
MAINTENANCE
See the engine manual supplied with your machine for
appropriate engine maintenance schedule and
troubleshooting guide for problems. At the front of the book
there is a “Daily Pre-Operation Checklist ”. Make copies
of this checklist and use it on a daily basis.
NOTICE
The following procedure should be followed to adjust trowel
arms when it becomes apparent that the trowel is finishing
poorly or in need of routine maintenance.
NOTICE
ALWAYS
allow the engine to cool before
servicing.
NEVER
attempt any maintenance
work on a hot
engine.
CAUTION
Disconnect the spark plug wire from the spark plug and
secure away from the engine before performing
maintenance or adjustments on the machine.
CAUTION
