Figure 1-21. Wear Ring, Shims And Wear Pads - ATI Corporation Level Best Grader Blade Operator's & Parts Manual

SPECIFICATIONS AND MAINTENANCE

Figure 1-21. Wear Ring, Shims and Wear Pads.

Wear Pad Maintenance
The Level Best Grader Blade contains 8 oil-
impregnated plastic wear pads that allow the blade
to sideshift smoothly without any grease needed!
These pads may wear down over time and need to
be checked periodically to ensure the moldboard
stays tightly attached to the carriage. The top
clasps also include a set of shims to accommodate
this wear and allow you to get the maximum use of
the pads on your Level best Grader Blade before
the pads need to be replaced.
How to Check for Wear
Periodically, you will need to examine the Grader
Blade moldboard where the rails run through the
clasps. If there is a gap between the rail and the
pad or there is movement/wobble in the blade
while operating, then there may need to be a shim
removed from either side.
When to Replace the Wear Pads
With the blade slightly above the ground, remove
one top clasp. ONLY REMOVE ONE SIDE AT A
TIME. Remove the appropriate number of shims
from beneath the clasp to create a close tolerance
on the moldboard.
NOTE: There should be very little-to-zero play
between the moldboard and the wear pads.
Conversely, the bottom of the clasp should
be square and firmly against the carriage
with no gaps present.
Once the appropriate combination of shims have
been removed from the bottom of the clasp to
create the desired tolerance, move the unused
shims to the top of the clasp prior to replacing the
clasp nuts. This will capture the clasps for future
use when new wear pads are installed. Apply
threadlocker to the threads of each clasp bolt and
tighten the three nuts evenly to 282 ft-lbs.
To replace the wear pads, simply turn over the clasp
and remove the retaining bolts with a 3/16 inch
Allen bit then pry out the worn pads. Replace with
new wear pads and verify they are seated squarely
in the machined pockets, then apply
locker prior to tightening to 17 ft-lbs. Check clasp
tolerance and adjust according to instructions listed
in prior paragraph.
Once the first side is complete and tightened, repeat
the process on the opposite side.
NOTE: Only the top clasps contain shims, but there
are wear pads in all top and bottom clasps.
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