Dolev 800 - Loading/Unloading System -
Loading System Assembly

Rubber Roller (Driver) Chain (large)

Loading System - Type I (zoom image)
Loading System - Type II (zoom image)

Description
Replacement
Check

Description

The chain drives the two large rubber rollers (A70 - 507F34613, and A35 - 507F34614). The rubber rollers load the film from the loading cassette into the pressure rollers.

#56    507F34614 LARGE DRIVE ROLLER A35
#57    507F34613 LARGE DRIVE ROLLER A70

Replacement

Tools, Accessories and Jigs
Parts List
Removing the Old Assembly
Assembling the New Chain

Tools, Accessories and Jigs

jig 280A34180
jig 280A34180 - a
jig 280A34180 - b

Flat screwdriver
Phillips screwdriver
Allen keys
Rubber roller service tool (280A34180)

Parts List

#56    507F34614 LARGE DRIVE ROLLER A35
#57    507F34613 LARGE DRIVE ROLLER A70

Removing the Old Assembly

Note: The orientation of the illustration is from the back side of the assembly.

1. Remove the loading/unloading system.
   
   
2. Remove the connector cables and the cover (#93).
   
   
3. Remove the lower large light cover (#127).
   
   
4. Disassemble the cassette motor (#87). See detail F on figure:
   
   Remove three 8-32 x 5/8 screws and washers (#64,23,6,5).
   
   
5. Pull the motor forward to free the chain from the motor sprocket. The motor  wiring is still attached to the motor: Be careful not to displace the wires.
   
   
6. Disassemble the lever screws (#34).
      
   
7. Free the washers, E-rings and spring. Place the loading system on its side.
   
   
8. Insert the rubber roller service tool (280A34180) into the driving shaft (#41).     
   
   Gather all of the Dellerin washers.
   
   
9. Remove the rubber roller (#57).
   
   
10. Remove the chain (#29).

Assembling the New Chain

1. Insert the new chain (#29).
   
   
2. Put back the rubber roller (#57).
   
   
3. Insert the rubber roller service tool (280A34180) into the driving shaft (#41). Put each of the Dellerin washers on the roller, in the correct order.
   
   
4. Put back the washers, E-rings and spring. Place the loading system right side up.
   
   
5. Re-assemble the lever.
   
   
6. Insert the motor with the axis slightly forward. Place the chain on the motor   sprocket. Push the motor into position with the chain tension set.
   
   
7. Re-assemble the cassette motor (#87).
   Tighten three 8-32 x 5/8 screws and washers (#64,23,6,5).
   
   
8. Check that the chain path is parallel to the side plate (#1). This indicates alignment between the motor sprocket and the drive rollers.
   
   
9. Put back the lower large light cover (#127).
   
   
10. Re-connect the connector cover (#93) and cables.
    
    
11. Replace the loading/unloading system.

Check

Enter the diagnostics program.
Select UTILITIES, MECHANICS.
Select 4. Cassette from the Mechanics Menu:

Mechanics Menu

1. Run the small cassette forward and backward:
   Forward Cass.
   Reverse Cass.
   Stop Cass.
      
   
2. When the unit completes the check, assemble the loading and unloading system onto the Imagesetter.
   
   
3. Perform five (5) minimum length film feeds from the large cassette. Measure the film. It must match the film length you entered.