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PAGE 14 MAINTENANCE (continued)
6. PUMP DISASSEMBLY (continued)
E. Remove the capscrews that secure the bearing cartridge covers (159) to the bearing cartridges and
remove the cartridges from the rotating assembly.
WARNING: TO PREVENT POSSIBLE SERIOUS PERSONAL INJURY, EXTREME CARE SHOULD
BE EXERCISED TO SELECT THE PROPER PULLER, AND APPROVED SAFETY
GLASSES SHOULD BE WORN.
CAUTION: BECAUSE OF POSSIBLE DAMAGE OR CONTAMINATION DURING REMOVAL,
BEARINGS SHOULD NOT BE REUSED AND NEW BEARINGS SHOULD ALWAYS
BE INSTALLED.
F. Remove the bearing locknut (161) and bearing lock washer (162) from the outboard bearing end of the
rotating assembly, and use a wheel/bearing puller to remove the outboard / thrust (168) and inboard /
radial (163) bearings.
G. Remove bearing cartridge covers (159), water slingers (126), casing wearing rings (16), lantern rings
(10), and packing (212). If the pump is equipped with mechanical seals (456), refer to the seal
manufacturer’s instructions.
H. Remove the shaft sleeves (14). Depending on the pump service, shaft sleeves are supplied in two
different configurations. The removal procedure for each configuration differs:
WARNING: TO PREVENT POSSIBLE SERIOUS PERSONAL INJURY, HEAT RESISTANT
GLOVES MUST BE WORN WHEN HANDLING HEATED PARTS.
Sleeves Affixed With Loctite: Remove the shaft sleeve nuts (213) (if they are provided), heat the
sleeves to approximately 450
o
F to break the bond, then tap them with a brass or copper mallet.
CAUTION: BECAUSE OF POSSIBLE DAMAGE DURING DISASSEMBLY, O-RINGS SHOULD
NOT BE REUSED AND NEW O-RINGS SHOULD ALWAYS BE INSTALLED.
Sleeves Keyed To Shaft: Remove the shaft sleeve nuts (213), shaft sleeves (14) and the shaft sleeve
O-rings (452).
I. Slide the impeller (1) off the shaft (4) and remove the impeller key (102).
J. If your pump has impeller wear rings and they require replacement, they will be secured by one of two
methods, and you should proceed as follows:
WARNING: TO PREVENT POSSIBLE SERIOUS PERSONAL INJURY, HEAT RESISTANT
GLOVES MUST BE WORN WHEN HANDLING HEATED PARTS.
Wearing Rings Secured With Loctite: Heat the sleeves to approximately 450
o
F to break the bond,
and then tap them with a brass or copper mallet. If heating fails to affect removal, the rings may be
ground off.
WARNING: TO PREVENT POSSIBLE SERIOUS PERSONAL INJURY, EXTREME CARE SHOULD
BE EXERCISED TO SELECT THE PROPER GRINDING EQUIPMENT, AND
APPROVED SAFETY GLASSES SHOULD BE WORN WHEN GRINDING.
Wearing Rings Secured With Setscrews: Remove the setscrews and chisel cut or grind the rings in
two at the setscrew location.
K. The pump disassembly is now complete. All parts should be thoroughly cleaned and inspected for
wear or damage, and replaced if required.