8.4 DISMANTLING 204, 255, 321 & 365 COMPRESSOR FOR MAJOR OVERHAUL (Continued)
If the journal bearing clearance inspection shows the bearing diametrical clearance is less than the
maximum allowable, (see Fig. 55), the advantages of a further period of trouble free running with
new journal bearings should be considered before deciding to re-use the existing bearings.
Maximum
Allowable
Clearance
Fig. 55 Journal Bearing Clearances
Removing the Input Shaft Seal
After the driven half coupling and key have been removed, extract the cap screws from the shaft end
cover and using the jacking holes provided and using ‘T’ bar jacking tools, remove the shaft cover
(Fig. 56).
Fig. 56
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