The illustrations used in this manual are for identification
purposes only and should not be used for ordering parts.
Secure a parts list from the factory or a Viking representative.
Always give complete name of part, part number and material
with the model and serial number of the pump when ordering
repair parts.
UNMOUNTED PUMPUNITS
PACKED MECH. SEAL
HL34HL434
KK34KK434
LQ34LQ434
Q34Q434
M34M434
N34N434
This manual deals exclusively with series 34 and 434
Jacketed General Purpose Pumps. Refer to Figures 1
through 11 for general configuration and nomenclature used
in this manual.
Units are designated by the
unmounted pump model
numbers followed by a
letter indicating drive style.
V = V-belt
TSM 630.2 (LS-QS sizes) and TSM 630.3 (N-RS sizes)
SECTION TSM 430
PAGE 1 OF 9
SERIES 34 AND 434
ISSUE G
SIZES HL, KK, LQ, Q, M, N
FIGURE 2
CUTAWAY VIEW OF SERIES 434
JACKETED PUMP
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.
FIGURE 1
ILLUSTRATION OF SERIES 34
JACKETED PUMP
VIKING PUMP, INC.• A Unit of IDEX Corporation•Cedar Falls, IA 50613 USA
Failure to follow above listed
precautionary measures may result in
serious injury or death.
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 430ISSUE GPAGE 2 OF 9
ROTATION: Viking pumps operate equally well in a clockwise
or counter clockwise 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 placement pumps and must
be provided with some sort of pressure protection. This
may be a relief valve mounted directly on the pump, an
in-line pressure relief valve, a torque limiting device or a
rupture disk.
2. There are relief valve options available on these pumps.
Options may include a plain or a jacketed relief valve
depending on the pump size. Pumps equipped with a
jacketed head plate are generally not available with a
relief valve.
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.
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.
MAINTENANCE
Series 34 and 434 jacketed pumps are designed for long,
trouble-free service life under a wide variety of application
conditions with a minimum of maintenance, however, the
following should be considered.
1. LUBRICATION: External lubrication must be applied
slowly with a handgun to all lubrication fittings every 500
hours of operation with multi-purpose grease, NLGI # 2.
Do not over-grease. Applications involving very high or
low temperatures will require other types of lubrication.
Refer to Engineering Service Bulletin ESB-515. Consult
factory with specific lubrication questions.
2. PACKING ADJUSTMENT: New packed pumps generally
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 and/or replacement
of the packing. See instructions in disassembly and
reassembly regarding re-packing the pump.
3. END CLEARANCE ADJUSTMENT: After long term
operation it is sometimes possible to improve the
performance of the pump, without major repair, through
adjustment of end clearance of the pump. Refer to
instructions under Step 3 of Assembly, page 7.
4. CLEANING PUMP: It is good practice to keep the pump
as clean as possible. This will facilitate inspection,
adjustment and repair work and help prevent omission
of lubrication to fittings covered or hidden with dirt.
5. STORAGE: If pump is to be stored, or not used for any
appreciable length of time it should be drained and a
light coat of lubricating and preservative oil should be
applied to the internal parts. Lubricate all fittings. Be
sure to drain all steam jacket chambers to prevent
freezing during cold weather. Tighten all assembly bolts
before the pump is put into service after being stored.
SUGGESTED REPAIR TOOLS: The following tools must be
available to properly repair Series 34 and 434 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. Packing hooks, flexible (packed pumps)
Large for 0.375 inch and up cross section packing
3. Arbor Press
4. Allen wrenches (for mechanical seals)
5. Feeler gage set (for mechanical seals)
FIGURE 3
EXPLODED VIEW
SERIES 34 & 434 PUMPS (HL SIZE)
ITEMNAME OF PARTITEMNAME OF PARTITEMNAME OF PART
1Mechanical Seal8Packing Retainer Washer15Head Gasket Set
2Nut9Casing Bushing16Idler Pin
3Lockwasher10Casing (Jacketed)17Head (Jacketed) and Idler Pin Assembly
4Flat Washer11Pipe Plug18Capscrew
5Stud12Rotor and Shaft AssemblyNot Illus.Relief Valve
6Packing Gland13Idler and Bushing AssemblyNot Illus.Relief Valve Gasket