Howden WRV, Руководство по обслуживанию

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35
8.2 DISMANTLING 163 COMPRESSOR FOR MAJOR OVERHAUL (Continued)
Repeat the procedure on both rotors. If there is any doubt about the clearance of a bearing, renew
the bearing.
As the inlet end bearings are more lightly loaded they then only require to be inspected if the outlet
end bearings require to be replaced.
Compressor
Size Drawing
Clearance
mm Drawing
Clearance
inches Maximum
Allowable
Clearance
163 0.070/0.1102 0.0028
”/0.0043” 0.150mm/0.006”
Fig. 35 WRV163 Bearing Journal Clearances
Carry on the dismantling procedure by unlocking the lockwashers and locknuts securing the thrust
bearings (Figs.36 & 37) and remove. The adjusting ring behind the thrust bearing has threaded
extensions which enable the ring to be extracted by the use of jacking screws, the operation of
jacking out the adjusting ring withdraws the thrust bearing with it (Figs. 37-39).
Fig. 36
Fig. 37
Fig. 38
Fig. 39