Marshalltown SP684 SURFACE SHARK Surface Planer - Manual (Page 17)

SP684 SuRFACE ShARK SuRFACE PLANER PAGE 17
FIGuRE 8
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 against
the inside of the Surface 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.
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 REPLACEMENT
PART ONLY.
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.
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 TREATMENT
PROCESS AND COMPROMISE THE STRUCTURAL
INTEGRITY, RESULTING IN PROPERTY DAMAGE
AND/OR PERSONAL INJURY.
on occasion, it may be necessary to remove severely
worn drum rods from the flail drum by the use of a band
saw or similar device. FIGuRE 9. Proper preventative
maintenance and operational procedures will minimize
these occurrences.
FIGuRE 9