Viking Pump TSM163: N-R 337/4337 - Manual

VIKING PUMP, INC. • A Unit of IDEX Corporation •
Cedar Falls, IA 50613 USA
TECHNICAL SERVICE MANUAL
SECTION TSM 163
PAGE
1 Of 15
ISSUE D
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 (337 and 4337) are used to
indicate either an unmounted pump or mounted pump unit.
Introduction . . . . . . . . . . . . . . . . . . . . . . . 1
Special Information . . . . . . . . . . . . . . . . . . . 1
Maintenance . . . . . . . . . . . . . . . . . . . . . . 2
Packed Pumps . . . . . . . . . . . . . . . . . . . . . 3
Mechanical Seal Pumps . . . . . . . . . . . . . . . . 8
Optional PTFE Seal. . . . . . . . . . . . . . . . . . . 13
Thrust Bearing Adjustment . . . . . . . . . . . . . . . 14
Installation of Carbon Graphite Bushings . . . . . . . . 14
Pressure Relief Valve Instructions . . . . . . . . . . 15
UNMOUNTED PUMP UNITS
PACKED MECH. SEAL
Units are designated by the
unmounted pump model
numbers followed by a letter(s)
indicating drive style.
P = Commercial Speed Reducer
N337 N4337
R337 R4337
This manual deals only with Series 337 and 4337 Stainless
Steel Heavy Duty Pumps. Refer to Figures 1 through 20 for
general configuration and nomenclature used in this manual.
Pump specifications and recommendations are listed in
Catalog Section 163, Series 337 and 4337 Heavy Duty Steel
External Pumps.
FIgURE 1
R337 SIZE SHOWN
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.
Model Chart Number
Electronic copies of the most current TSM issue can be found on the Viking Pump website at www.vikingpump.com
STAINLESS STEEL HEAVY DUTY PUMPS
SERIES 337 AND 4337
SIZES N AND R