Superabrasive
Owner’s Manual Original Language – Lavina
®
32G-X/GTX
7/2019
29
Figure 8.9.2
Figure 8.9.3
Figure 8.9.1
Figure 8.8.1
8.8
CORRECTING SAG OF USED PLANETARY CHAIN
Unscrew the bolts of the maintenance window (see Fig.8.8.1)
from the right side of the main head (Fig.8.8.2) (Fig.8.8.3)
and lift the machine into tool-changing position. Manually turn
the holders in order to turn the main head, stop when the
chain link and the chain tensioner can be seen through the
window.
Loosen two bolts of the chain tensioner a quarter to a half
revolution (Fig.8.8.5). The tensioner should turn with
minimum clearance, without inclination, and then unscrew
the inner nut (Fig.8.8.6). To tension the chain screw, tighten
the outer nut (Fig.8.8.7). The tensioner of the planetary chain
should allow chain sagging of 3...5mm (1/8...3/16 in)
measured in span X (Fig.8.8.7). When the tension is set,
screw the two nuts (Fig.8.8.6) (Fig.8.8.7) and the two bolts
(Fig.8.8.4) (Fig.8.8.5).
ATTENTION: NEVER “OVER” TENSION THE CHAIN,
THE CHAIN WILL BE DAMAGED
8.9 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 loss of
integrity of the chain. Take off the maintenence window (see Fig.8.8.1) from the right side of the main head (Fig.8.8.2)
(Fig.8.8.3) and lift the machine into tool-changing position. Manually turn the holders in order to turn the main head,
stop when the chain link and the chain tensioner can be seen through the window.
Seperate the main head from the carriage as
described in the paragraph “Splitting the carriage from the main head”,
Dismount the top cover. Unscrew the eight bolts (Fig.8.9.1) and take off the top cover (Fig.8.9.2) (Fig.8.9.3).
Figure 8.8.2
Figure 8.8.4
Figure 8.8.6
Figure 8.8.3
Figure 8.8.5
Figure 8.8.7
1
