OKIDATA Pacemark 3410, Service Handbook

Page: 148 / 308

3.2.29 Rear Feed Tractor Assembly
1. Remove the printer mechanism (3.2.07).
2. Remove the lower center guide (1).
3. Separate the claws (2) and remove the two drive gears from the right side of the
printer mechanism (3A - Drive Gear A and 3B - Drive Gear B).
4. Using a needle nose pliers, remove the nylon cable clamp (4).
5. Slide the upper drive shaft (5) to the left and remove it.
6. Slide the lower drive shaft (6) to the left and remove it.
7. Remove the upper center guide (7), being careful not to lose the friction ring (8).
8. Lift and remove the push tractor assemblies (9) and locking shaft (10).
NOTES:
To remove the tractors , raise the lock levers and slide the tractors off.
When installing the push tractor assembly, take the following precautions:
9. First, install the friction ring in the upper center guide. If the upper center guide
moves easily along the locking shaft, you must rotate the friction ring 45 degrees,
using a standard screwdriver (11).
10. Check the installation; if the guide moves with difficulty, it is properly installed.
11. Make sure that the tractors are synchronized by aligning the synchronization marks
in the same direction.
12. Make sure that the guide holes (12) in the tractor drive gears face the same direction.
13. The groove of the upper center guide must be positioned behind the paper pressure
guide (13).
14. The left tractor assembly must be positioned between the two guide tabs (14).
P/N 50054501 Tractor: Push (Left) Assembly RSPL B.2.07
P/N 50054601 Tractor: Push (Right) Assembly RSPL B.2.07
P/N 51002301 Friction: Piece RSPL B.2.07
P/N 51002401 Guide: Center - Upper RSPL B.2.07
P/N 51002501 Guide: Center Lower A RSPL B.2.07
P/N 51002601 Guide: Center Lower B RSPL B.2.07
Maintenance 3 - 62 Pacemark 3410 Service Handbook