Inspection - Yamaha TTR250L Service Manual

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REAR SHOCK ABSORBER AND SWINGARM

INSPECTION

1.Inspect:
Rear shock absorber
Oil leaks/damage → Replace the rear
shock absorber.
Gas cylinder
Oil leaks/damage → Replace the rear
shock absorber.
WARNING
Do not disassemble the shock absorber,
because of the highly pressurized nitrogen
gas in it.
2.Inspect:
Bearing
Pitting/noise/damage → Replace.
Loss of solid lubrication 1 → Replace.
NOTE:
Polylube bearings*, with solid lubrication,
have been adopted with the intent to make
the needle bearings, used in this model,
maintenance free. With polylube bearings,
no grease nipple and regular lubrication is
necessary. However, grease should be
applied to all oil seals and collars when
removed or installed.
*Polylube bearing
Grease and an ultra-high molecular weight
polyethylene are the lubricating elements
which are used. These two elements
become solid after heat treatment, where
they are sealed into the bearing race and
perform as a solid lubricant to reduce fric-
tion when necessary.
6 - 66
CHAS

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