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Superabrasive
8.8 REPLACING THE DRIVEN PLANETARY GEAR (SPROCKET)
Remove the planetary chain and tensioner (see Fig.8.5 ‐ MOUNTING NEW PLANETARY CHAIN).
Dismount the tool holders, sealers, and bottom cover (see Fig.8.7 ‐ TENSIONING AND REPLACING THE BELTS). Unscrew the cap to
access the fastening bolts of the driven gear (Fig.8.8.1)(Fig.8.8.2). Rotate the main head such that you see a fastening bolt of the gear
(Fig.8.8.3) through the hole.
You will need a 10mm magnetic deep metric socket with an outside diameter of no more than 11/16 in to unscrew the six bolts
(Fig.8.8.3)(Fig.8.8.4) (Fig.8.8.5). Once these are removed, remove the two halves of the gear. The
gear is composed of two symmetrical halves(Fig.8.8.6). Mount them in reverse order.
Figure 8.8.1
Figure 8.8.4
8.9 REPLACING THE PULLEY UNITS
Dismount guard, top cover, maintenance window chain tensioner, driven chain wheel, bottom cover and belts as previous
described.
Figure 8.9.1
Unscrew the four bolts of each pulley between the base plate and the motor base
disc (Fig.8.9.1)(Fig.8.9.2) and dismount the pulley (Fig.8.9.3).
A seal (Fig.8.9.4) should be placed on top of the pulley before mounting.
User Manual
Original Language
Figure 8.8.2
Figure 8.8.5
Figure 8.9.2
21
Lavina® 25-X
9/2018
Figure 8.8.3
Figure 8.8.6
Figure 8.9.3
Figure 8.9.4
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