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SHAFT SEAL
The Seal Plate is bolted to the A Plate. This housing may be solid UHMW (ultra
high molecular weight polypropylene or polyethylene) or it may contain one or two
Johns Manville (JM Clipper) lip shaft seals. There may be a grease fitting on this
plate; the grease is used to reduce leakage and to help prevent fiber material from
entering and damaging the screw shaft.
Generally, seals are allowed to drip once they start leaking. They are replaced
only in conjunction with major maintenance, as when the screw is removed from
the press.
In some cases we have found that leakage from a shaft seal can be stopped by
simply selectively loosening or tightening the four bolts holding the seal housing to
the A plate.
SEAL PLATE SPLIT SEAL PLATE
SCREW REMOVAL
The screw is removed through the hole in the C Plate, at the cake discharge end of the
press. The operation can be difficult the first time, so we recommend consulting with the
factory before getting started.
First of all, remove the four bolts holding the shaft seal housing to the A Plate. This
will prevent damage when the screw drops out of the gearbox.
Next, remove the screen of the press, following the instructions in the Screen
Removal section.