Superabrasive
User Manual
Original Language
Lavina® 25E
2/2019
23
You can change the butterfly of the holder without dismounting the holder of the machine.
Fig.8.5.13 is a 3‐D section view of
the holder, showing its parts. The numbering is the same as in Spare parts.
8.6 CORRECTING DEFLECTION OF THE USED PLANETARY CHAIN
Unscrew the bolts and take out the cover (Fig.8.6.1). Lift the machine in position to change the tools. Turn manually the holders in
order to turn the main head, stop when you see through the window the chain tensioner (Fig.8.6.2).
Loosen a quarter to 1/2 rev the
two bolts of the chain tensioner
(Fig.8.6.3) the tensioner should
turn with minimum clearence,
without inclination, then
unscrew the inner nut. To
tension the chain screw the
outer nut (Fig.8.6.4). The tensioner of the planetary chain should allow chain sagging 3...5mm/1/8...3/16 in/ controlled in span X
(Fig.8
.6.5).
Whe
n
ready
screw
the
two
nuts
(Fig.8
.6.4)
and the screw(Fig.8.6.3).
ATTENTION: NEVER “OVER” TENSION THE CHAIN,
THE CHAIN WILL BE DAMAGED
MOUNTING NEW PLANETARY CHAIN
The planetary chain is replaced with new one when the step/drive of the chain tensioner is finished or there is a break in the
integrity of the chain.
Unscrew the bolts
(Fig.8.6.1) and take out the cover.
Lift the machine in position to change the tools.
Turn manually the holders in order to turn the main head, stop when you see through the window the chain tensioner
(Fig.8.6.2). Separate the carriage from main head, point 8.4 , pull out motor plug, water tubes and vacuum tubes. Take off handle
(without water tubes). Release the pin sets which attach the head to the carriage. Take off the service window (Fig. 8.6.1) so you
can dismount the top cover
Loosen the two nuts(Fig.8.6.4) and uscrew the two screws of the
tensioner (Fig.8.6.8)(Fig.8.6.9)(Fig.8.6.10). Take the chain
tensioner(Fig.8.6.11). Pull out the split pin (Fig.8.6.12) and the
chain link pin (Fig.8.9.8) (Fig.8.6.13). Take the chain, and put on
the same way the new chain, get in the chain link pin and the split
pin (Fig.8.6.13) (Fig.8.6.12) (Fig.8.6.11).
Figure 8.6.2
Figure 8.6.1
Figure 8.6.3
Figure 8.6.4
Figure 8.6.5
Figure 8.6.1
