Service Manual
7-3
Cleaning and Maintenance
7
The two clutches used in the printer look slightly different but
function and are serviced in the same manner. Refer to the Section 8
topics “Paper-pick roller, clutch, and paper-empty flag” on page 8-10
and “Lower aligning roller, clutch, and paper-pass sensor
1
flag” on
page 8-12 for the procedures on removing the clutches.
■
White plastic gear train:
This gear train from the paper-feed motor to
the paper-feed module requires only a small amount of white grease
for noise reduction purposes. Apply it sparingly so that the grease
does not fling off of the gears when they turn. You need only to apply
a dab of grease to a single gear and the grease will migrate throughout
the entire gear train.
■
White (nylon) plastic bearings and cams:
No lubrication required.
Inspecting
Rollers:
Replace the rollers when you see any of the following defects:
■
Flat spots.
■
Out of roundness.
■
Cracked rubber.
■
Loss of traction (tackiness) causing pick or feed failures.
Figure 7-1 Lubricating the clutches
8699-22
Spring end
fits into slot
of clutch sheeve
Spring end
fits into center
hole of clutch boss
E-ring
Washer
Clutch
boss
Clutch
spring
Clutch
sleeve
Gear
Roller
shaft