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Viking Pump TSM141.2: LS-M 125/4125 User Manual

Technical service manual, Contents introduction

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SECTION TSM 141.2
PAGE

1 Of 12

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 pump when ordering

repair parts. The unmounted pump or pump unit model

number and serial number are on the nameplate.

In the Viking model number system, basic size letters are

combined with series number (125 and 4125) and used to

indicate either an unmounted pump or mounted pump unit.

fIgURE 1

Size LS

Introduction . . . . . . . . . . . . . . . . . . . . . . .

1

Special Information . . . . . . . . . . . . . . . . . . .

2

Maintenance . . . . . . . . . . . . . . . . . . . . . .

2

Packed Pumps . . . . . . . . . . . . . . . . . . . . .

3

Mechanical Seal Pumps . . . . . . . . . . . . . . . .

6

Standard Rubber Bellows Type . . . . . . . . . . .

8

Optional PTFE Seal . . . . . . . . . . . . . . . . .

9

Thrust Bearing Adjustment . . . . . . . . . . . . . . .

10

Installation of Carbon Graphite Bushings . . . . . . . .

11

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

11

fIgURE 2

Sizes Q and M

fIgURE 3

Size QS

UNMOUNTED PUMP

UNITS

PACKED MECH. SEAL

LS125

LS4125

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

Q125

Q4125

QS125

QS4125

M125

M4125

This manual deals only with Series 125 and 4125 Heavy

Duty Bracket Mounted Pumps.

Refer to figures 1 through

15 for general configuration and nomenclature used in this

manual. Pump specifications and recommendations are

listed in Catalog Section 141, Series 125 and 4125 Heavy

Duty Bracket Mounted Pumps.

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

HEAVY-DUTY BRACKET MOUNTED PUMPS

SERIES 125 AND 4125

SIZES LS, Q, QS, M