Xerox Nuvera 100, Service Manual

Page: 187 / 304

Cleaning and Maintenance 5-7
Lubrication
Tools and supplies required
• Light oil
• Grease (Nye Rheolube 368B)
In general, all of the printer’s bearings and motors are lifetime
factory-lubricated. However, over time and under certain extreme
operating conditions, oil and grease may dry out, causing squeaks and
rumbling noises in the printer. Look for fine metal particles — a clear
sign of an old or worn bearing. Under these circumstances, replace
the bearing or the assembly.
A drop of grease on a noisy bushing will quiet a noisy printer. Too
much lubrication can get into the paper path and attract dust, so
apply lubrication sparingly.
Lubricate the following only when needed:
• Bushings: Apply a drop of light oil to a bushing if it is noisy or
running dry.
• Plastic gear train: The gear train from the process motor to
the paper-feed module requires only a small amount of white
grease for noise reduction purposes. Apply grease sparingly so
that it 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. Do not apply oil
to gears; only use approved grease.
NOTE: Do not apply lubricant to the head tilt gear or the head tilt
gear guide.
• X-axis drive. Apply a small amount of grease on the tip of the
nose cone. Apply a small amount, 3 dabs, on the threads of the
X-axis shaft.
• White (nylon) plastic bearings and cams: No lubrication
required.
Inspection
Rollers: Replace the rollers when you see any of the following
defects:
• Flat spots.
• Out of roundness.
• Cracked rubber.