Service guide
March 2001
20
This pulley is located on the paper
feed shaft end close to motor 1.
Remove retainer and timing belt
as described in previous sections.
Replace pulley, reinstall retainer
and timing belt and readjust timing
belt tension as described in
previous section.
5550 181 Encoder
Remove sensors PS04 and PS05
(refer to earlier section).
If only the disc needs
replacement, slide off the retainer
and the encoder using a thin blade
and thin screwdrivers.
Press on new encoder disc and
retainer and reinstall sensors.
If the assembly including the hub
is to be removed, see the
following.
1453 007 Bearing (on
shafts)
Dismount springs from roller ends
(previously described under
5551023).
To get access to the upper shaft,
first remove encoder unit located
on right side plate. Insert two
screwdrivers in the groove of the
encoder hub (picture) and lever off
the encoder disc assembly (with
hub).
To get access to the lower shaft,
first remove the pulley on the
right shaft end (refer to earlier
section, 5550 008). Also remove
pulley 4 on the roller shaft
(picture above) in order to get
access to the screws of Housing
2.
Loosen and remove Housing 2
and/or 3 with bearing from shaft
end and side plate. Slide bearing
out of Housing. Reinstall in
reverse order.
5550 020 Assy, hub with
set screws (upper shaft)
Bearing
Housing 3
Housing 2
Shaft 8
Roller end
Pulley 4
Hub
Encoder
Encoder
PS04 + 05
