Tally T6090 Maintenace Manual - page 107
Chapter 4: Removal and Reinstallation Procedures
4 –37
Procedure 22 – Tractor Belt Phasing/Paper Drive Belt Adjustment
Before beginning this procedure, turn the printer off and disconnect the power cable.
Any time a tractor pulley or drive belt is removed, the paper system needs to be checked for
proper phasing and belt tensioning.
STEP 1.
Loosen the screw holding the lower idler bracket and slide it away from the belt, then retighten
it to hold the bracket in place temporarily.
1
1
3
3
2
2
P.A. Motor
Mounting Screws
Paper Drive
Pulley
Lower Belt
Lower Idler
Bracket Screw
Lower Idler
Bracket
Lower Shaft
Pulley
Lower Shaft
Paper Drive
Motor
Figure 4–33 Phasing/Belt Adjustments
STEP 2.
Loosen the three screws holding the paper drive motor to the side frame plate.
STEP 3.
With the lower drive belt installed, slide
the motor up as far as possible. Re-
tighten one screw to hold the motor in
place.
STEP 4.
Place the Form Thickness Lever at
about its midpoint position, then install
the phasing gauge (#075467) from tool
kit (#081147) or a single sheet of paper
in the tractors.
Figure 4–34. Phasing Gauge
Installation
Upper
Tractor
Lower
Tractor
Phasing
Gauge