Operating Instructions and Parts Manual | 020598 and 020599 |
Maintenance (continued)
NOTE: To keep shaft from turning, hold impeller while unthreading impeller fastener.
3.Pry seal seat from impeller recess with a screwdriver (See Figure 1).
9.After seal seat is in place, ensure that it is clean and has not been marred.
10.Using a clean cloth, wipe shaft and make certain that it is completely clean.
11.Place adapter seal
Do not touch or wipe polished face of seal
head.
Figure 1 – Mechanical Seal
Replacement
4.Remove adapter by unthreading adapter fasteners (Ref. No. 5) and fastener seals (Ref. No. 4). Press old seal head and adapter seal (Ref. No. 24) out of adapter by pushing from engine side.
5.Clean adapter and impeller seal recesses before installing new pieces.
6.Carefully wipe polished surface of new seal seat with a clean cloth.
7.Wet rubber portion of seal seat with a light coating of soapy water.
8.Press seal seat squarely into recess in impeller. If seal seat does not press squarely into recess, it can be adjusted by pushing on it with a piece of pipe. Always use a piece of cardboard between pipe and seal seat to avoid scratching lapped, highly polished surface of seal seat (handle it carefully).
Figure 2 – Mechanical Seal
Replacement
12.Secure adapter on engine mounting face, using fasteners and fastener seals. Be sure to replace gasket (Ref. No. 31) between engine and adapter, if removed during disas- sembly.
Tighten adapter fasteners evenly to
avoid cocking or damaging adapter.
13.Replace impeller and shims, ensur- ing that key (Ref. No. 8) is in place and lock impeller to shaft with fas- tener and impeller seal on fastener.
14.Replace volute seal and volute with fasteners, ensure that check valve (Ref. No. 12) is in place then remount casing seal and pump cas- ing with fasteners and nuts.
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