User's Manual

MAINTENANCE (continued) PAGE 15
6. PUMP DISASSEMBLY (continued)
E. Remove the capscrews (159D) that secure the bearing housing covers (159) to the bearing housings
and remove the housings from the rotating assembly.
F. Remove the outer snap ring (345) from the outboard bearing end of the rotating assembly, and use a
wheel/bearing puller to remove the outboard (168) and inboard (163) bearings.
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.
G. Remove bearing housing 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.
If the pump is equipped with an oil lubrication system, remove the lip seals (158C) from the inboard and
outboard bearing housing covers and the inboard bearing housing.
H. Remove the shaft sleeves (A14 or B14). Depending on the pump service, shaft sleeves are supplied in
two different configurations. The removal procedure for each configuration differs:
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.
WARNING: TO PREVENT POSSIBLE SERIOUS PERSONAL INJURY, HEAT RESISTANT
GLOVES MUST BE WORN WHEN HANDLING HEATED PARTS.
Sleeves Keyed To Shaft: Remove the shaft sleeve nuts (213), shaft sleeves (B14) and the shaft
sleeve O-rings (452).
CAUTION: BECAUSE OF POSSIBLE DAMAGE DURING DISASSEMBLY, O-RINGS SHOULD NOT
BE REUSED AND NEW O-RINGS SHOULD ALWAYS BE INSTALLED.
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:
Wearing Rings Secured With Loctite: Heat the sleeves to approximately 450
o
F to break the bond,
then tap them with a brass or copper mallet. If heating fails to affect removal, the rings may be ground
off.
Wearing Rings Secured With Setscrews: Remove the setscrews (17A) and chisel cut or grind the
rings in two at the setscrew location.
WARNING: TO PREVENT POSSIBLE SERIOUS PERSONAL INJURY, HEAT RESISTANT
GLOVES MUST BE WORN WHEN HANDLING HEATED PARTS.
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.
K. The pump disassembly is now complete. All parts should be thoroughly cleaned and inspected for
wear or damage, and replaced if required.