8.4 DISMANTLING 204, 255, 321 & 365 COMPRESSOR FOR MAJOR OVERHAUL (Continued)
Removing the Input Shaft Seal (Continued)
Pull out the shaft seal, taking care not to damage the carbon face of the seal. (Fig. 57) Withdraw the
inlet balance piston using T-bar jacking tools in the jacking holes provided. (Fig. 58) Follow this up
by removing the stationary seat from the seal cover.
Fig. 57 Fig. 58
Removing the Vi adjuster-WRVi255, WRVi321 & WRVi365 Compressors.
Remove the retaining clip at the back of the square Vi adjusting screw and push the adjusting screw
into the compressor.
Extract the capscrews fixing the Vi cover and remove the cover.
Removing the Inlet End Cover
Fit an eyebolt at the top of the inlet end cover to the main casing (Fig. 59).
Remove the dowel pins locating the inlet cover to the main casing.
Fig. 59 Fig. 60 Fig. 61
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