VDL Futura FHD2 E6, Руководство по ремонту

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Futura FHD2/FMD2 E6
REPAIR GUIDELINES
Components
2 - 8
3
DD1020_01
2.5 BEARINGS
2.5.1 GENERAL INFORMATION
• A bearing must be replaced if it is worn, if it has become pit-
ted (small dents in the running surface) and/or if the bear-
ing has been exposed to excessive heat (blue spots).
• When fitting a bearing, make sure no force is transferred
via the bearing’s ball bearings or rollers, for example, by fit-
ting a bearing to an axle by pushing the outer race.
• Clean the bearing before fitting it.
• Avoid dirt from getting into the bearing while it is being fit-
ted.
• If the instructions specify that the bearing should be heated
before it is fitted, avoid exceeding the specified tempera-
ture. Also avoid local overheating.
• Raise the temperature of the bearing evenly by heating it in
an oil bath intended for this purpose. Another option is to
place the bearing on an electric cooker. Pay close attention
to the temperature when doing so.
2.5.2 FITTING BEARINGS INTO A BEARING HOUSING
1. Always use a suitable driving tool.
2. Centre the driving tool accurately on the outer bearing
race.
3. Press the bearing evenly into the housing, preferably
using a pressing tool.
2.5.3 FITTING BEARINGS TO A SHAFT
1. Always use a suitable punch.
2. Centre the punch carefully on the inner bearing race.
3. Press the bearing evenly on to the shaft, preferably using
a pressing tool.