Chapter 8: Maintenance
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Gloves.
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Disposable lint-free wipes.
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Detergent-based cleaning liquid.
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Grease gun with flexible nozzle for a grease (Zerk) nipple.
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Seal pick to remove O-ring seal.
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NLGI-2 bearing and O-ring grease.
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Four replacement O-rings
NOTE: Even though a Zerk fitting is provided on the caster axle, do not lub-
ricate the caster axle.
Use the following ESD caster lubrication procedure:
1.
Press an E-Stop button and power off the LD-250 to put it into a safe working state. and
safely lift up the LD-250 so that you can access the casters.
2.
Remove the front lower and rear right and left skins. See: Removing and Installing Skins
on page 178.
3. Remove the caster wheel. See the procedure to remove a caster wheel in: Replacing a
Caster Wheel on page 171.
4.
The caster yoke's bearing race (A) is covered by an O-ring (B). Remove the O-ring by
pulling it down with a seal pick and dispose of it.
Figure 8-5 Caster Yoke Bearing and O-Ring
5.
Use disposable wipes to remove old grease and dirt from the yoke bearing [(A) in Figure
8-5].
6.
Use the grease gun to apply only two pumps of grease through the Zerk fitting in the
yoke bearing [(A) in Figure 8-6]. Avoid applying grease to the wheel.
20472-000 Rev B LD-250 Platform User's Guide 155
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