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4.6.39 Carriage Tractor/Vernier/Tractor
Drive Shaft
Notes:
1. Tractor drive shaft verniers are factory
adjusted. If the verniers become worn or
defective, replace the complete drive shaft
and vernier assembly.
2. Use pliers, PIN 9900317, to remove retainer
clips.
Removal
1.
Remove the printer covers (4.6.1) steps 1
through 3.
2.
Loosen the carriage motor (four screws)
and remove the carriage drive belt
fl.
3.
Remove the retainer clip
II
,the washer
m ,
and the wavy washer
Ii .
4.
Move the shaft to the left and remove the
retainer clipl!l and washer
H .
5.
Squeeze the tractor release lever together,
slide the tractor to the right off the drive
shaft and pull the tractor forward from
the slot.
Replacement
1.
2.
3.
Replace in the reverse order of removal
but do not tighten the carriage drive
motor mounting screws.
Adjust the carriage drive belt to produce
0.100 inch ± 0.025 inch (2.54 mm ± 0.64
mm) deflection with 200 grams force applied
midway between the pulleys.
Perform tractor drive shaft adjustment
(4.6.37).
Main Frame
-----_~
Washerm
Wavy
WasherDl
Belt Printer
285 Ipm
4-135
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