Viking Pump TSM630.3 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

UNIVERSAL SEAL HEAVY DUTY PUMPS

SERIES 324A/AH/E/EH & 4324A/AH CAST IRON

SERIES 327A & 4327A STAINLESS STEEL

CONTENTS

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

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

Disassembly . . . . . . . . . . . . . . . . . . . . . . 5

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

Mechanical Seal Replacement . . . . . . . . . . . . . 7

Seal Removal. . . . . . . . . . . . . . . . . . . . . 7

Seal Installation. . . . . . . . . . . . . . . . . . . . 8

Thrust Bearing Adjustment . . . . . . . . . . . . . . .10

Installation of Carbon Graphite Bushings . . . . . . . .10

Pressure Relief Valve Instructions . . . . . . . . . . . 11

Disassembly . . . . . . . . . . . . . . . . . . . . . 11

Assembly . . . . . . . . . . . . . . . . . . . . . . .11

Pressure Adjustment . . . . . . . . . . . . . . . . . 11

Heat Cartridges . . . . . . . . . . . . . . . . . . . . .11

SERIES 323A/E & 4323A STEEL

SIZES N, R AND RS

FIGURE 1

N AND R SIZES

(R SIZE SHOWN)

SECTION TSM 630.3

PAGE 1 OF 13

ISSUE H

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 a complete name of part, part number and material with
the 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.

Model Chart Number

UNMOUNTED PUMP UNITS

Packed Mech. Seal

N323A
N323E
R323A
RS323A
N324A
N324AH
N324E
N324EH
R324A
N327A
R327A
RS327A

This manual deals only with Series 324A, 324AH, 4324A,
4324AH, 324E, 324EH, 323A, 323E, 4323A, 327A, 4327A
Heavy Duty Bracket Mounted Pumps. Refer to Figures 1
through 12 for general configuration and nomenclature used
in this manual. Pump specifications and recommendations are
listed in Catalog Section 630, Viking Universal Seal Pumps.

N4323A
R4323A
RS4323A
N4324A
N4324AH

R4324A
N4327A
R4327A
RS4327A

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

P = Commercial Speed
Reducer

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.

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

!

!

!

!

!

WARNING

!

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

!

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 630.3 ISSUE H PAGE 2 OF 13

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.

CIRCULATION LINES: These are standard equipment and
must be hooked up properly. Packed pumps have a flush
line from packing chamber to discharge port. Mechanical
seal pumps have a suckback line from seal chamber to
suction port. If pump rotation is reversed, be sure circulation
connections are hooked up to the suction or discharge port
as noted above to avoid excessive leakage or damage to
pump. If pump is handling heated product, be sure circulation
line is insulated to assure continued flow.

Jacketed head (R standard, optional on N size) and jacketed
bracket provide large chambers on both sides of the pumping
chamber for improved temperature control of product in
pump. These features do not alter basic steps in disassembly
and assembly of your pump.

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 include
a jacketed relief valve for the N pump (only available with
the non-jacketed head). A non-jacketed relief valve is
available for the R pump. The RS pump does not have a
relief valve available.

3. If pump rotation is to be 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 2.

5. Pressure relief valves cannot 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.

SPECIAL MECHANICAL SEALS:

Extra care should be taken in repair of pumps with mechanical
seals. Be sure to read and follow all special instructions
supplied with your pump.

MAINTENANCE

Series 323A, 323E, 4323A, 324A, 324AH, 4324A, 4324AH,
324E, 324EH, 327A, and 4327A 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.

INLET

OR

SUCTION

RELIEF VALVE

ADJUSTING

SCREW

OUTLET

OR

DISCHARGE

FIGURE 2

LUBRICATION: External lubrication must be applied slowly
with a hand gun to all lubrication fittings every 500 hours
of operation with multi-purpose grease, NLGI # 2. Refer to
Engineering Service Bulletin ESB-515. Consult factory with
specific lubrication questions. Applications involving very high
or low temperatures will require other types of lubrication.

PACKING ADJUSTMENT: New packed pumps require
initial packing adjustment to control leakage as packing “runs
in”. Make initial adjustments carefully and do not over-tighten
packing gland. After initial adjustment, inspection will reveal
need for packing replacement. Refer to instructions under
Assembly on page 6, regarding repacking pump.

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

STORAGE: If pump is to be stored, or not used for six months
or more, pump must be drained and a light coat of light 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 Universal Seal Bracket Pumps.
These tools are in addition to standard mechanics’ tools such
as open-end wrenches, pliers, screwdrivers, 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)

4. Mechanical seal installation sleeve

2-751-006-630 for 3.4375 inch seal; “N” pumps.
2-751-010-630 for 4.5000 inch seal; “R” and “RS”
Pumps.

5. Bearing locknut spanner wrench

6. Spanner wrench, (Supplied with pump)

Viking Part Number 3-810-009-631

7. Brass bar

8. Arbor press

SECTION TSM 630.3 ISSUE H PAGE 3 OF 13

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

1 Locknut 16 Grease Fitting 31 Stud for Head

2 Lockwasher 17 Pipe Plug 32 Nut for Head

3 End Cap for Bearing Housing 18 Bracket and Bushing Assembly 33 Rotor and Shaft Assembly

4 Lip Seal for Bearing Housing (2 Req’d) 19 Pipe Plug 34 Idler and Bushing Assembly

5 Bearing Spacer Collar 20 Bracket Bushing 35 Idler Bushing

6 Roller Bearing (2 Req’d) 21 Nut for Bracket 36 Head Gasket

7 Bearing Housing 22 Bracket Gasket 37 Idler Pin

8 Packing Gland Nut 23 Stud for Bracket 38 Head and Idler Pin Assembly

9 Packing Gland Washer 24 Pipe Plug 39 Relief Valve Gasket

10 Packing Gland Stud 25 Locating Pin 40 Internal Relief Valve

11 Packing Gland 26 Casing 41 Capscrew for Relief Valve

12 Packing 27 Nut for Flanges 42 Cover Plate

13 Packing Retaining Washer 28 Stud for Flanges 48 Heater Cartridges for Bracket (324E/EH Pumps Only)

14 Seal Plate 29 Flush / Suckback Line 49 Heater Cartridges for Head (324E/EH Pumps Only)

15 Mechanical Seal 30 Pipe Plug

FIGURE 3

EXPLODED VIEW OF UNIVERSAL BRACKET PUMP (N SHOWN)

SECTION TSM 630.3 ISSUE H PAGE 4 OF 13