C
HAPTER
3. M
AINTENANCE
P
ROCEDURES
3-79
02.9628.0010 CONFIDENTIAL
7-Oct-97
CAUTION
: It is essential that tilt mechanism belt be adjusted correctly.
Overtightening belt can cause high failure rate.
Step 13. Adjust belt tension.
a. Tighten belt adjustment screw and then check tension of
belt (
Figure 3-26
).
FEED SIDE OF BELT
TENSION SIDE OF BELT
PULLEY
DRIVE PULLEY
BELT MUST BE TAUT
(NO DEFLECTIONS)
PULLEY SIDE RAIL
REAR COVER
BEARING
HOLE
DRIVEVW
GOOD:
GAP EXISTS BETWEEN
BEARING AND HOLE
TOO TIGHT:
BEARING IS FLUSH
AGAINST HOLE
TOO LOOSE:
BEARING IS FLUSH
AGAINST HOLE
Figure 3-26. Tilt Mechanism Adjustment Screw Setting
b. Turn head so that pulleys rotate back and forth. At same
time, slowly tighten adjustment screw until both tension and
feed sides of belt are taut (no deflections).
Step 14. Complete tilt mechanism replacement by doing Steps 2 thru 11
in reverse.
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