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ASSEMBLY INSTRUCTIONS/OPERATIONS
8FP FLOOR PLANER SERIES OPERATION AND PARTS MANUAL REV #2 (05/28/09) PAGE 19
FIGURE 8
Problems encountered by uneven component
wear
1) Inadequate free play exists between the
flails/spacer washers and the support plates of the flail
drum. If the flails and spacer washers do not have
complete freedom of movement, they will not be
capable of properly rotating about the flail drum rod.
The result is rod wear confined to two locations that
are usually 180 degrees apart. FIGURE 9. Variances
in flail and spacer washer thicknesses affects free play
when assembled on the drum. Because free play is
also created during the planing process due to actual
flail and spacer w
asher wear, a certain amount of
"tightness" can sometimes be tolerated without
affecting the service life of the drum rods or flails. The
specific amount of "tightness" can usually be
determined through trial and error. If the flails and
spacer washers appear too tight on the drum, remove
an appropriate flail or washer and reassemble the
drum. If a short, operational test indicates normal
component wear patterns, the apparent problem has
been solved. A general rule for consideration: it is
better to have the flails and spacer washers a "little too
loose" on the drum than
a "little too tight".
FIGURE 9
2) Mixing both worn and new flails on the drum. Proper
flail action against the work surface material requires
that the flails be of the same, approximate dimensions.
Flails with various inside and outside dimensions will
not impact the work surface material with the same
intensity and deliver the same results. Flail rod wear is
directly proportional to the amount of force it must
supply against each, individual flail. When a rod can
no longer supply adequate force against the flails, it
will break, allowing the flails to be hurdled a
gainst the
inside of the Floor Planer frame. The more aggressive
flails require greater forces to keep them contained on
the rod. These forces, in turn, create faster and/or
uneven rod wear rates.
Because flail drum rods are a critical component of the
actual planing process, it is important that each rod be
inspected on a regular basis to determine proper
structural integrity.
DANGER
INSPECT EACH FLAIL DRUM ROD ON A
REGULAR INTERVAL TO DETERMINE PROPER
STRUCTURAL INTEGRITY. USAGE RATES AND
OTHER OPERATING PARAMETERS WILL
DETERMINE PROPER INTERVAL RATES. IF
THERE IS ANY QUESTION REGARDING THE
VISUAL STRUCTURAL INTEGRITY OF A DRUM
ROD, PROPERLY DISCARD AND REPLACE IT
WITH AN APPROVED, FACTORY REPLACE- MENT
PART ONLY.
DANGER
THE MINIMUM ALLOWABLE DRUM ROD
DIAMETER IS 3/8 INCH AS MEASURED ALONG
ANY PART OF ITS CIRCUMFERENCE AND/OR
LENGTH. ANY DRUM ROD NOT MEETING THIS
MINIMUM DIMENSION STANDARD SHOULD BE
PROPERLY DISCARDED AND REPLACED WITH
AN APPROVED, FACTORY REPLACEMENT PART
ONLY.
DANGER
UNDER NO CIRCUMSTANCE IS WELDING AND/OR
ANY OTHER TYPE OF METAL BUILD-UP
PROCESS ALLOWED TO BE PERFORMED ON A
WORN DRUM ROD. TYPICAL MAINTENANCE
TECHNIQUES CAN ALTER THE ORIGINAL HEAT