IBM 4247 Maintenance Information page 329

Drive Gear
(In Standby
Position
For Rear
Installation)
Idler
Gear
Printer
Selector
Gear
Figure 82. Tractor In Standby Position, Rear. Tractor shown installed in rear position, with drive gear not engaged
(right end cover removed, for clarity).
Note: If two tractor assemblies are installed for a push-pull configuration, then both tractor drive gears will be in
the drive position when paper is being fed.
1. Power off (O) the printer.
2. Locate and remove from the forms path torn pieces of paper or other foreign material that can cause
forms jams.
3. Inspect the following parts for wear, damage, or binds. Replace the tractor assembly, if indicated.
v Belts and tractor pins
v Doors and door springs
v Supports
v Latches
v Drive and idler gears
v Connector
Chapter 5. Removals and Adjustments
329