The large drive rollers are located on the loading system.
The rollers load the large cassette film to the drum.
The set contains two drive rollers, one is made of soft
rubber (A35) and has on it a plastic sprocket and the other is made of hard rubber (A70)
and has on it the opposite plastic sprocket and a metal sprocket connected via the chain
to the motor that drives the set.
Open the loading system doors and remove the three film
loading cassettes.
Open the loading system track locks. Pull the unit forward
until the rollers catch on the tracks. Remove the right cover.
Disconnect the cable connectors.
Dismantle the arms by removing the roll pins 03 and pulling
the arms out from the drive shafts.
Dismantle the springs from both sides. The springs are
assembled in pairs.
Dismantle the E-rings from the drive shafts.
Disassemble the large cassette flipper shelf.
Dismantle the large loading cassette base plate. The base
plate is in the bottom of the large film cassette compartment. To remove the plate, push
it slightly to the right, into the grooves. Then lower the left side of the plate and
remove the part.
Disassemble the large cassette motor (4 screws) from the
assembly. Shift it in the direction of the drive shafts and pull the motor out. Pay
attention not to damage the chain that drives the drive rollers.
Assemble the rubber roller jig 280A34180 on the drive shaft
and pull the drive shaft out gently. Pay attention to collect the Dellerin and the metal
spacers that lie between the drive rollers.
Take out the drive rollers and put them on the side.
Take the new drive rollers. Check that the sprockets are not
damaged and that the rubber has no holes in it. See that the rollers are straight (Put it
on a flat table and check that it is straight, while rolling the roller around its axis.)
Check that the sprockets are well attached to the place and
the Nylon flanges are in place.
Put the drive shaft back in its place. Pay attention to the
assembly of the rollers, Dellerin washers and the metallic spacers in the correct order.
Use the other end of the rubber roller jig (280A34180) to center the washers and the
spacers in place. Do not forget to assemble the chain on the sprocket.
Assemble the E-rings on the drive shafts.
Assemble the motor (4 screws). Check that the chain sits
properly and is tight.
Assemble the springs back on the drive shaft.
Assemble the large loading cassette base plate. To assemble
the plate, push it slightly to the right, into the grooves. Then lift the left side of the
plate and position the part in place.
Assemble the large cassette flipper shelf. Check that the
flipper shelf work smoothly.
Assemble the arms and the roll pins 03.
Assemble the loading system in place. Connect the cable
connectors and close the track locks.
Put the film cassettes back in their compartments.
