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 450oF to break the bond, then tap them with a brass or copper mallet.
CAUTION: BECAUSE OF POSSIBLE DAMAGE DURING DISASSEMBLY,
Sleeves Keyed To Shaft: Remove the shaft sleeve nuts (213), shaft sleeves (14) and the shaft sleeve
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 450oF 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.