Manual

ManualsBrandsViking Pump ManualsPumpsTSM212: H-LL 724/4724

SECTION TSM 212

PAGE 1 Of 9

ISSUE f

VIKING PUMP, INC. • A Unit of IDEX Corporation • Cedar Falls, IA 50613 USA

TECHNICAL SERVICE MANUAL

CONTENTS

INTRODUCTION

The illustrations used in this manual are for identification

purposes only and cannot be used for ordering parts. Obtain a

parts list from the factory or a Viking® representative. Always

give complete name of part, part number and material with

model number and serial number of the pump when ordering

repair parts.

FIGURE 1 - UNMOUNTED PUMP

Introduction . . . . . . . . . . . . . . . . . . . . . . . 1

Special Information . . . . . . . . . . . . . . . . . . . 1

Safety Information. . . . . . . . . . . . . . . . . . . . 2

Maintenance . . . . . . . . . . . . . . . . . . . . . . 3

Disassembly . . . . . . . . . . . . . . . . . . . . . . 3

Assembly . . . . . . . . . . . . . . . . . . . . . . . . 6

Pressure Relief Valve Instructions . . . . . . . . . . . 8

Warranty . . . . . . . . . . . . . . . . . . . . . . . . 9

UNMOUNTED PUMP

UNITS

PACKED MECH. SEAL

Units are designated by the

unmounted pump model

numbers followed by a letter

indicating drive style.

V = V-Belt

D = Direct Connected

R = Viking Speed Reducer

P = Commercial Speed Reducer

H724 H4724

HL724 HL4724

K724 K4724

KK724 KK4724

L724 L4724

LQ724 LQ4724

LL724 LL4724

This bulletin deals exclusively with Series 724 and 4724

Heavy Duty Bracket Mounted Stainless Steel Pumps.

Refer to Figures 1 through 12 for general configuration and

nomenclature used in this bulletin.

SPECIAL INFORMATION

DANGER !

Before opening any Viking pump liquid

chamber (pumping chamber, reservoir,

relief valve adjusting cap fitting, etc.)

Be sure:

1. That any pressure in the chamber has

been completely vented through the

suction or discharge lines or other

appropriate openings or connections.

2. That the driving means (motor,

turbine, engine, etc.) has been “locked

out” or made non-operational so that

it cannot be started while work is

being done on pump.

3. That you know what liquid the

pump has been handling and the

precautions necessary to safely

handle the liquid. Obtain a material

safety data sheet (MSDS) for the

liquid to be sure these precautions

are understood.

Failure to follow above listed

precautionary measures may result in

serious injury or death.

ROTATION: Viking pumps operate equally well in a clockwise

or counterclockwise rotation. Shaft rotation determines which

port is suction and which is discharge. Port in area where

pumping elements (gear teeth) come out of mesh is suction

port.

PRESSURE RELIEF VALVES:

1. Viking pumps are positive displacement pumps and

must be provided with some sort of pressure protection.

This may be a relief valve mounted directly on the pump,

an inline pressure relief valve, a torque limiting device or

a rupture disk.

2. There are relief valve options available on those pump

models designed to accept a relief valve. Options may

include a return to tank relief valve and a jacketed relief

valve. Pumps equipped with a jacketed head plate are

not available with a relief valve.

HEAVY-DUTY STAINLESS STEEL PUMPS

SERIES 724 AND 4724

SIZES H - LL

Electronic copies of the most current TSM issue can be found on the Viking Pump website at www.vikingpump.com

Summary of content (9 pages)

PAGE 1
Electronic copies of the most current TSM issue can be found on the Viking Pump website at www.vikingpump.com TECHNICAL SERVICE MANUAL HEAVY-DUTY STAINLESS STEEL PUMPS SERIES 724 AND 4724 SIZES h - LL CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . .1 Special Information . . . . . . . . . . . . . . . . . . . .1 Safety Information . . . . . . . . . . . . . . . . . . . . 2 Maintenance . . . . . . . . . . . . . .
PAGE 2
SAFETY INFORMATION AND INSTRUCTIONS IMPROPER INSTALLATION, OPERATION OR MAINTENANCE OF PUMP MAY CAUSE SERIOUS INJURY OR DEATH AND/OR RESULT IN DAMAGE TO PUMP AND/OR OTHER EQUIPMENT. VIKING’S WARRANTY DOES NOT COVER FAILURE DUE TO IMPROPER INSTALLATION, OPERATION OR MAINTENANCE. THIS INFORMATION MUST BE FULLY READ BEFORE BEGINNING INSTALLATION, OPERATION OR MAINTENANCE OF PUMP AND MUST BE KEPT WITH PUMP. PUMP MUST BE INSTALLED, OPERATED AND MAINTAINED ONLY BY SUITABLY TRAINED AND QUALIFIED PERSONS.
PAGE 3
SPECIAL INFORMATION 3. If pump rotation is reversed during operation, pressure protection must be provided on both sides of pump. 4. Relief valve adjusting screw cap must always point towards suction side of pump. If pump rotation is reversed, remove pressure relief valve and turn end for end. Refer to Figure 1. 5. Pressure relief valves should not be used to control pump flow or regulate discharge pressure.
PAGE 4
figure 2 - EXPLODED view series 724 ITEM NAME OF PART ITEM NAME OF PART ITEM NAME OF PART 1 Locknut 14 Lantern Ring 27 Idler and Bushing Assembly 2 Lockwasher 15 Packing Retainer Washer 28 Idler Bushing 3 End Cap for Bearing Housing 16 Casing Bushing 29 Head Gasket 4 Lipseal Bearing Housing 17 Grease Fitting (Angle) 30 Idler Pin 5 Bearing Spacer Collar 18 Pressure Relief Plug 31 Head and Idler Pin Assembly 6 Ball Bearing 19 Grease Fitting 32 O-ring for Jacket Head Pl
PAGE 5
o-ringS STEAM JACKETED AREA HEAD lipseal IDLER SHAFT IDLER PIN Bearing housing seal ROTATING member CASING BRACKET CASING BUSHING ROTOR STEAM JACKETED HEAD PLATE SEAL Stationary member figure 4 DISASSEMBLY 1. Remove the head from the pump. CAUTION: DO NOT ALLOW THE IDLER TO FALL FROM THE IDLER PIN. Tilting the head up as it is removed will prevent this occurrence. Avoid damaging the head gasket if possible.
PAGE 6
. Loosen the radial set screws in the bearing housing flange that locks the end cap in place and using a spanner wrench, remove the end cap, lipseal and bearing spacer collar. 7. Remove the 2-row ball bearing and inner spacer collar from bearing housing, wash and inspect bearing for wear or damage and replace, if necessary. 8. Loosen two axial set screws in bearing housing flange and remove housing from bracket.
PAGE 7
2. 3. Be sure shaft is free from burrs and foreign particles that might damage the casing bushing. Install the rotor and shaft. Place the end of the shaft in the casing bushing and turn from right to left slowly, pushing until the ends of the rotor teeth are just below the face of the casing. Refill the casing lubrication chamber with multipurpose grease and place the tapered sleeve in the lipseal for seal chamber as shown in Figure 9. Remove the tapered sleeve from the shaft (Series 4724).
PAGE 8
Lipseal FOR SEAL CHAMBER TAPERED SLEEVE figure 9 THRUST BEARING ADJUSTMENT (See Figure 10) 1. Loosen the two set screws “A” in the outer face of the bearing housing “B” and turn this thrust bearing assembly “B” clockwise until it can no longer be turned by hand. Back off counterclockwise only until the rotor shaft can be turned by hand with a slight noticeable drag. 2.
PAGE 9
TECHNICAL SERVICE MANUAL HEAVY-DUTY BRACKET MOUNTED PUMPS SERIES 724 AND 4724 SIZES h - hl SECTION TSM 212 PAGE 9 of 9 ISSUE F PRESSURE ADJUSTMENT CAUTION: Do not run with valve in full bypass for more than 30 seconds at a time. If a new spring is installed or if pressure setting of pressure relief valve is to be changed from that which the factory has set, the following instructions must be carefully followed. 1. Install a pressure gauge in discharge line for actual adjustment operation. 2.