Merits P318 series, Service Manual

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2.2.5. To replace the caster wheel assembly
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When should you replace the caster wheel assembly?
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If the caster wheel assembly is worn out.
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If the stud (2.02) of caster wheel assembly is broken.
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If the caster wheel assembly is out of shape due to an accident.
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How to replace the caster wheel assembly?
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Please proceeding steps as follows if it has to replace.
The caster wheel assembly is composed of a caster wheel and
fork.
Replace the caster wheel assembly by the following steps if, after
inspection, the assembly is found to be deformed.
a.
Remove the seat assembly.
b. Remove the cap(1.07). (See next page)
c. Fix the caster wheel in place. Hold the stub (2.02) and loosen
the nut (1.06) and then remove the caster wheel assembly. (See
next page)