User's Manual

ManualsBrandsAURORA PRODUCTS ManualsWater PumpsAURORA PRODUCTS Water Pump 491

PAGE 14 MAINTENANCE (continued)

5. PACKING REPLACEMENT (continued)

PUMP MODEL

(

PUMP SIZE

)

4-441-11A 5-441-18A

2-441-8A 3-441-9A/C 4-441-14C 6-441-14A/C 6-441-19A

4-441-8 5-441-14A 6-441-18A 10-441-20

6-441-12A 8-441-14A

PACKING BOX

Sleeve O.D. 1-5/8 2 2-1/2 3 3-1/2

Packing Box I.D. 2-7/16 2-15/16 3-9/16 4-3/16 4-13/16

Packing Box Depth 2-15/16 2-7/8 3-7/8 4-5/16 4-3/4

PACKING SIZE 3/8 3/8 1/2 9/16 5/8

Qty. of Rings per Box

(Without Lantern Ring)

Lantern Ring Width 3/4 3/4 1 1-1/8 1-1/4

PACKING ARRANGEMENT

WITH LANTERN RING

(Packing Rings-Lantern

Ring-Packing Ring)*

2-L-3 2-L-3 2-L-3 2-L-32-L-3

7 7777

* See Sectional Drawings on pages 23 & 24.

NOTE: For Fire Pumps, the Model designation changes from “441” to “491.”

6. PUMP DISASSEMBLY

CAUTION: READ THIS ENTIRE DISASSEMBLY PROCEDURE AND REFER TO THE SECTIONAL

DRAWINGS IN THIS MANUAL BEFORE PROCEEDING.

Major maintenance will require disassembly of the pump. Following are step-by-step instructions.

A. Lock out the power to the driver and close the suction and discharge valves. Drain the pump,

disconnect and remove the coupling or flexible shafting. Disconnect and remove all auxiliary piping to

the upper casing (3) and bearing housings (C158 and D158) (packing box flush line, lubricators on oil

lubricated pumps, cooling water lines on pumps with water-cooled bearings, etc.).

B. Remove the capscrews (2A) securing the upper casing half (3) to the lower half (2). Remove the gland

nuts (31B) and slide the glands (A31 or B31) off the gland studs (31A). Install jack screws in the tapped

holes in the upper casing half and use them to separate the flanges. Carefully lift the upper casing half

using the long shank eyebolts in the tapped holes in the upper casing half.

CAUTION: USE OF A CRANE OR HOIST OF ADEQUATE CAPACITY IS RECOMMENDED. THE

LIFTING HOOK SHOULD BE NO LESS THAN 3-4 FEET ABOVE THE EYE OF THE

EYEBOLTS TO AVOID BENDING OF THE BOLTS. THE USE OF THE SHORT

EYEBOLTS IS NOT RECOMMENDED SINCE THE UPPER CASING HALF WILL TEND

TO TIP WHILE BEING LIFTED, RESULTING IN POSSIBLE DAMAGE OR PERSONAL

INJURY.

C. Remove the capscrews (158B) and pins (158A) that secure the bearing housings (158) to the lower

casing. The pins may be removed using the threaded holes in the pins.

D. Lift the rotor assembly from the casing using a double rope sling.

WARNING: BE CAREFUL WHEN POSITIONING THE ROPES TO AVOID THE ROTOR SLIPPING

AND CAUSING POSSIBLE SERIOUS PERSONAL INJURY.