Multiquip 8FP Series ユーザーズマニュアル

 

 

 

FIGURE 13 
 
 
The most widely used drum is of the 

two-section 

design. FIGURE 14. It incorporates two half sectioned 
side plates that  are positioned on the center shaft to 
facilitate optimum flail spacing. The half side plate 
sections also provide additional stability and structural 
rigidity for the drum rods. The two-section drum can 
accommodate the use of all flail designs while meeting 
the most demanding job applications. 
 
General Notes Regarding Flail Drums 
1) Flail drum rods are held in position by end caps and 
related fasteners. The end caps  are heat treated to 
extend their service life. 
 
2) The countersunk Allen head capscrews  are 
retained to the flail drum by both self locking, hexagon 
head nuts and lock washers.  The lock washers 
provide additional redundancy while eliminating open,  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
FIGURE 14 
 
exposed threads that can become worn or damaged 
from field use. A countersunk Allen head capscrew 
was chosen over a conventional hexagon head 
capscrew  to eliminate  anticipated wear. Component 
wear would substantially increase the difficulty of 
disassembling drum components in the field. Before 
removing these capscrews, clean the internal hexagon 
with an appropriate tool to help facilitate their removal. 
 
3) Flail rods are not intended to rotate in the drum 
assembly while the Floor Planer is in operation.  
Severe operation can cause the drum plates to wear 
and elongate. Drum rods are also subject to wear and 
elongation. If the total  amount of wear is not severe, 
various types of high strength, anaerobic  adhesives 
can be utilized to secure the rods to the drum. Severe 
component wear is always  an immediate reason to 
reject either the rods and/or drum and replace with 
factory approved, replacement parts. 

 
 
 
4) Regularly inspect the drum for excessive wear and 
signs of fatigue. Random vibration caused by the 
planing process is difficult, if not impossible, to fully 
predict. Component service life is impossible to 
predict. Work surface materials, operator techniques 
and general maintenance are also contributing factors 
that will limit the service life of the drum and/or 
components. If there is any question regarding the 
structural integrity of a drum or any component, 
properly discard  and replace with factory  approved, 
replacement parts. 
 
5) It is advisable to always have  a minimum of one 
spare, loaded drum available to increase job site 
productivity  and reduce down time.  Replacing worn 
flails is a job that can require from only a few, short 
minutes to even hours for extremely worn and 
damaged components.  Replacing  a drum on the 
driveshaft can usually be accomplished in a matter of 
a few minutes. It is a common practice to replace worn 
flails during normal, unproductive time and keep a 
number of loaded, replacement drums on the job site 
to speed production rates. 
 
INSTALLING FLAILS ON THE TWO SECTION 
DRUM. 
 
All flails  are  assembled on the two section drum in  
sequence patterns with the spacer washers.  Spacer 
washers provide for an overlapping effect of the flails 
that produces consistent material removal from the 
work surface.  
 
Normal installation procedure (fine finish) for star, 
beam and all 1/8-inch nominal thickness flails 
 
1) Install  a flail next to the outside side plate of the 
narrow section. Next, install  a spacer washer. Follow 
with a flail and continue the sequence until the section 
is full. FIGURE 15. 
 
 
 
 
 
 
 
 
 
 
 
 
FIGURE 15