Tektronix Phaser 840, Quick Reference Manual

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Service Guide
81
Lubrication
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. Replace the bearing
or the assembly it is a part of.
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: This 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.
Tools and supplies required
■
Light oil
■
Grease 006-7997-00