Viking Pump TSM312 User Manual

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

TECHNICAL SERVICE MANUAL

GENERAL PURPOSE PUMPS

CONTENTS

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

Special Information . . . . . . . . . . . . . . . . . . . 2

Maintenance . . . . . . . . . . . . . . . . . . . . . . 2

Disassembly . . . . . . . . . . . . . . . . . . . . . . 6

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

Installation of Carbon Graphite Bushings . . . . . . . . 8

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

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. 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 (32 and 432), indicating either
an unmounted pump or mounted pump unit.

SECTION TSM 312

PAGE 1 Of 11

SERIES 32 AND 432

ISSUE G

SIZES G - N

FIGURE 1 - G Size Unmounted Pump

Model Number Chart

UNMOUNTED PUMP UNITS

PACKED MECH. SEAL

G32 G432

H32 H432

HL32 HL432

J32

K32 K432

KK32

L32 L432

LQ32

LL32

Q32

M32

N32

This manual deals only with Series 32 and 432 General
Purpose Pumps. Refer to Figures 1 thru 12 for general
configuration and nomenclature used in this bulletin. Pump
specifications and recommendations are listed in Catalog
Section 310, Series 32 and 432 General Purpose Pumps.

Units are designated by the
unmounted pump model
numbers followed by a letter
indicating drive style.

V = V-Belt
D = Direct Drive
B = Bracket Mounted

FIGURE 2 - H and HL Size Unmounted Pump

FIGURE 3 - J, K, KK and L Size Unmounted Pump

(Shown without pressure relief valve)

FIGURE 4 - LQ, LL, M and N Size Unmounted Pump

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

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.

THE FOLLOWING SAFETY INSTRUCTIONS MUST BE FOLLOWED AND ADHERED TO AT ALL TIMES.

Symbol
Legend :

!

!

!

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WARNING

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WARNING

Danger - Failure to follow the indicated

instruction may result in serious injury

!

or death.

BEFORE opening any liquid chamber (pumping
chamber, reservoir, relief valve adjusting cap fitting,
etc.) be sure that :

● Any pressure in the chamber has been completely
vented through the suction or discharge lines or
other appropriate openings or connections.

● The pump drive system means (motor, turbine,
engine, etc.) has been “locked out” or otherwise
been made non-operational so that it cannot be
started while work is being done on the pump.

● You know what material the pump has been
handling, have obtained a material safety data
sheet (MSDS) for the material, and understand
and follow all precautions appropriate for the safe
handling of the material.

BEFORE operating the pump, be sure all drive guards
are in place.

DO NOT operate pump if the suction or discharge
piping is not connected.

DO NOT place fingers into the pumping chamber or
its connection ports or into any part of the drive train
if there is any possibility of the pump shafts being
rotated.

DO NOT exceed the pumps rated pressure, speed, and
temperature, or change the system/duty parameters
from those the pump was originally supplied, without
confirming its suitability for the new service.

BEFORE operating the pump, be sure that:

● It is clean and free from debris

● all valves in the suction and discharge pipelines

are fully opened.

● All piping connected to the pump is fully supported

and correctly aligned with the pump.

● Pump rotation is correct for the desired direction

of flow.

WARNING

WARNING

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WARNING

!

!

!

WARNING

!

WARNING

Warning - In addition to possible serious

injury or death, failure to follow the
indicated instruction may cause damage
to pump and/or other equipment.

INSTALL pressure gauges/sensors next to the
pump suction and discharge connections to monitor
pressures.

USE extreme caution when lifting the pump. Suitable
lifting devices should be used when appropriate. Lifting
eyes installed on the pump must be used only to lift
the pump, not the pump with drive and/or base plate.
If the pump is mounted on a base plate, the base plate
must be used for all lifting purposes. If slings are used
for lifting, they must be safely and securely attached.
For weight of the pump alone (which does not include
the drive and/or base plate) refer to the Viking Pump
product catalog.

DO NOT attempt to dismantle a pressure relief valve
that has not had the spring pressure relieved or is
mounted on a pump that is operating.

AVOID contact with hot areas of the pump and/or
drive. Certain operating conditions, temperature
control devices (jackets, heat-tracing, etc.), improper
installation, improper operation, and improper
maintenance can all cause high temperatures on the
pump and/or drive.

THE PUMP must be provided with pressure protection.
This may be provided through a relief valve mounted
directly on the pump, an in-line pressure relief valve,
a torque limiting device, or a rupture disk. If pump
rotation may be reversed during operation, pressure
protection must be provided on both sides of pump.
Relief valve adjusting screw caps must always point
towards suction side of the pump. If pump rotation is
reversed, position of the relief valve must be changed.
Pressure relief valves cannot be used to control pump
flow or regulate discharge pressure. For additional
information, refer to Viking Pump’s Technical Service
Manual TSM 000 and Engineering Service Bulletin
ESB-31.

THE PUMP must be installed in a matter that allows
safe access for routine maintenance and for inspection
during operation to check for leakage and monitor
pump operation.

SECTION TSM 312 ISSUE G PAGE 2 OF 11

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, a
rupture disk or other device.

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 or a jacketed relief
valve. Pumps equipped with a jacketed head plate are
generally not available with a relief valve.

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 Figures 1, 2, and 4, page 1.

5. Pressure relief valves should not be used to control
pump flow or regulate discharge pressure.

For additional information on pressure relief valves, Refer

to Technical Service Manual TSM000 and Engineering
Service Bulletin ESB-31.

MAINTENANCE

Series 32 and 432 pumps are designed for long, trouble-free
service life under a wide variety of application conditions with
a minimum of maintenance. The points listed below will help
provide long service life.

LUBRICATION - Periodic external lubrication should be
applied slowly with a hand gun at all lubrication fittings
provided. A good quality of general purpose grease is
satisfactory in the majority of cases, however, applications
involving very high or low temperatures may require other
types of lubricants. Suggested frequency of lubrication is
once every 500 hours of operation. Do not over-grease.
Refer to Enginnering Service Bulletin ESB-515. Consult
the factory with specific lubrication questions.

PACKING ADJUSTMENT - New packed pumps require
some initial packing adjustment to control leakage as
packing “runs-in”. Make initial packing adjustments carefully
and do not over-tighten the packing gland. After initial
adjustment, occasional inspection will reveal the need for
packing gland adjustment or replacement of the packing.

Refer to instructions under DISASSEMBLY, page 6 and
ASSEMBLY, page 7 regarding repacking the pump.

CLEANING THE PUMP - Keep the pump as clean as possible.
This will facilitate inspection, adjustment and repair work and
help prevent overlooking a dirt covered grease fitting.

STORAGE - If the pump is to be stored or not used for six
months or more, pump must be drained and a light coat
of non-detergent SAE 30 weight oil must be applied to all
internal pump parts. Lubricate fittings and apply grease to
pump shaft extension. Viking suggests rotating pump shaft
by hand one complete revolution every 30 days to circulate
the oil.

SUGGESTED REPAIR TOOLS: The following tools must be
available to properly repair Series 32 and 432 pumps. These
tools are in addition to standard mechanics’ tools such as
open end wrenches, pliers, screw drivers, etc. Most of the
items can be obtained from an industrial supply house.

1. Soft Headed hammer

2. Allen wrenches (some mechanical seals and set collars)

3. Packing hooks, flexible (packed pumps)

Small for up to 5/16”, G-KK (2-810-049-999).
Large for 3/8” and larger, L size and up (2-810-042-999).

4. Brass bar

5. Arbor press

SECTION TSM 312 ISSUE G PAGE 3 OF 11

FIGURE 5 - EXPLODED VIEW MODEL G32 PUMP

ITEM NAME OF PART ITEM NAME OF PART ITEM NAME OF PART

1 Packing Nut 7 Casing and Bushing Assembly 13 Idler Pin

2 Outer Packing Gland 8 Casing Bushing 14 Head and Idler Pin Assembly

3 Packing Rings 9 Rotor and Shaft Assembly 15 Capscrews for Head

4 Inner Packing Gland 10 Idler and Bushing Assembly 16 Relief Valve Gasket

5 Packing Spring 11 Idler Bushing 17 Relief Valve

6 Packing Spring Washer 12 Head Gasket Set 18 Capscrews for Valve

FIGURE 6 - EXPLODED VIEW MODEL G432 PUMP

ITEM NAME OF PART ITEM NAME OF PART ITEM NAME OF PART

1 Capscrews for End Cap 7 Casing Bushing 13 Head and Idler Pin Assembly

2 End Cap 8 Rotor and Shaft Assembly 14 Capscrews for Head

3 Gasket for End Cap 9 Idler and Bushing Assembly 15 Relief Valve Gasket

4 Mechanical Seal (Complete) 10 Idler Bushing 16 Relief Valve

5 Set Collar with Setscrew 11 Head Gasket Set 17 Capscrews for Valve

6 Casing and Bushing Assembly 12 Idler Pin

FIGURE 7 - EXPLODED VIEW MODEL H32 AND HL32

ITEM NAME OF PART ITEM NAME OF PART ITEM NAME OF PART

1 Two Piece Packing Gland 7 Casing and Bushing Assembly 13 Head and Idler Pin Assembly

2 Packing Rings 8 Rotor and Shaft Assembly 14 Capscrews for Head

3 Packing Retainer Washer 9 Idler and Bushing Assembly 15 Relief Valve Gasket

4 Casing Bushing 10 Idler Bushing 16 Relief Valve

5 Packing Gland Nuts 11 Head Gasket Set 17 Capscrews for Valve

6 Packing Gland Studs 12 Idler Pin

SECTION TSM 312 ISSUE G PAGE 4 OF 11