4-INCH PUMP MAINTENANCE--Continued
Solvents can burn easily, can give off harmful vapors,
and are harmful to skin and clothing. To avoid injury or
death, keep away from open fire and use in a well-ventilated
area. If solvent gets on skin or clothing, wash immediately with
soap and water.
Clean shaft and all component parts (except bearings) with a soft cloth soaked in cleaning solvent.
Inspect parts for wear or damage and replace as necessary.
INSPECTION AND REPAIR
Remove minor nicks on edges of impeller vanes with a fine finishing stone.
Replace all seals, gaskets, and bearings.
Inspect impeller shaft for nicks, scratches, scoring, or other damage. Replace shaft if damaged.
If shaft is worn so bearings slip on and off easily, shaft must be replaced. Replace housing if
bearings do not fit snugly into bearing bore.
Install three plugs (16, 17, and 26) in volute (18) and plug (5) in intermediate housing (1).
Install eight studs (19) in volute (18).
Install wear plate (20) to volute (18) with two new lockwashers (15) and nuts (14).
Install two bearings (32), and snap ring (31) to impeller shaft (33).
Install new seal (27) in bearing cap (28). Lip of seal must be towards inside of cap.
Install new seal (35) in intermediate housing (1).
Install bearings (32) and impeller shaft (33) in intermediate housing (1) as an assembly.
If shims were present at disassembly, put back in at assembly.
Install shims (30), new gasket (29), bearing cap (28), four new lockwashers (37), and screws (38)
to intermediate housing (1).