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Viking Pump TSM151.2: LS-M 123/4123 User Manual

Viking Pump Pumps

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TECHNICAL SERVICE MANUAL

HEAVY-DUTY STEEL EXTERNAL BRACKET MOUNTED PUMPS

SERIES 123 AND 4123

SIZES LS, Q, QS, M

SECTION TSM

151.2

PAGE

1 OF 14

ISSUE

B

CONTENTS


Introduction
Special Information

Maintenance

Packed Pumps

Mechanical Seal Pumps

Standard Rubber Bellows Type

(Sizes LS, Q, QS & M)

Optional Teflon Seal

Thrust Bearing Adjustment
Installation of Carbon Graphite Bushings

Pressure Relief Valve Instructions

INTRODUCTION


The illustrations 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 (123 and 4123) indicating both
unmounted or mounted pump unit.

UNMOUNTED PUMP

UNITS

PACKED

LS123

Q123

QS123

M123





MECH. SEAL

LS4123

Q4123

QS4123

M4123



Units are designated by the un-

mounted pump model numbers

followed by a letter(s)

indicating drive style.

V = V-Belt
D = Direct Connected
R = Viking Speed Reducer
P = Commercial Speed Reducer

This manual deals only with Series 123 and 4123 heavy-
duty Steel External Bracket Mounted Pumps. Refer to
Figures 1 through 14 for general configuration and
nomenclature used in this manual. Pump specifications and
recommendations are listed in Catalog Section 151, Series
123 and 4123 Heavy-Duty Steel External Bracket Mounted
Pumps.

FIGURE 1

SIZE LS

FIGURE 2

SIZES Q, QS AND M

VIKING PUMP INC. •

A Unit of IDEX Corporation •

1
2
2
3

7

11
12
12
13