Table of Contents
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TECHNICAL SERVICE MANUAL
CONTENTS
Introduction
Standard Rubber Bellows Type
(Sizes LS, Q, QS & M)
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
PACKED
MECH. SEAL
LS123
LS4123
Q123
Q4123
QS123
QS4123
M123
M4123
This manual deals only with Series 123 and 4123 heavy-
duty Steel External Bracket Mounted Pumps.
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.
HEAVY-DUTY STEEL EXTERNAL BRACKET MOUNTED PUMPS
UNITS
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
Refer to
VIKING PUMP INC. •
A Unit of IDEX Corporation •
1
2
2
3
7
11
12
12
13
SECTION TSM 151.2
PAGE
1 OF 14
B
FIGURE 1
SIZE LS
FIGURE 2
SIZES Q, QS AND M
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Summary of Contents for Viking pump Series 123
-
Page 1: Table Of Contents
R = Viking Speed Reducer SIZES Q, QS AND M 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. -
Page 2: Issue
CAP FITTING, ETC.) BE SURE: 1. THAT ANY PRESSURE IN CHAMBER MAINTENANCE HAS BEEN COMPLETELY VENTED THROUGH SUCTION OR DISCHARGE Series 123 and 4123 pumps are designed for long, trouble- LINES OTHER APPROPRIATE free service life under a wide variety of application conditions OPENINGS OR CONNECTIONS. -
Page 3: Packed Pumps
PACKED PUMPS IDLER HEAD ROTOR PACKING PACKING GLAND BRACKET SHAFT CASING IDLER PIN FIGURE 3 CUTAWAY OF PACKED PUMP MODEL Q OR M123 (QS casing has opposite ports) EXPLODED VIEW MODEL LS123 ITEM NAME OF PART ITEM NAME OF PART ITEM NAME OF PART Locknut... - Page 4 * QS Casing has Opposite ports DISASSEMBLY DANGER Mark head and casing before disassembly to insure BEFORE OPENING ANY VIKING PUMP proper reassembly. The idler pin, which is offset in LIQUID CHAMBER (PUMPING CHAMBER, pump head, must be positioned toward and equal...
- Page 5 Carefully remove rotor and shaft to avoid damaging ASSEMBLY bracket bushing. Install bracket bushing. If bracket bushing has a Remove packing gland from side of bracket. lubrication groove, install bushing with groove at 6:00 Loosen four setscrews over the inner and outer end o’clock position in bracket.
- Page 6 Using a 0.15-inch head gasket, install head and idler assembly on pump. Pump head and casing were DANGER marked before disassembly to insure proper reassembly. If not, be sure idler pin, which is offset in pump head, is BEFORE STARTING PUMP, BE SURE ALL DRIVE positioned toward and equal distance between port EQUIPMENT GUARDS ARE IN PLACE.
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Page 7: Mechanical Seal Pumps
MECHANICAL SEAL PUMPS EXPLODED VIEW MODEL LS4123 ITEM NAME OF PART ITEM NAME OF PART ITEM NAME OF PART Locknut Mechanical Seal Rotor and Shaft Lockwasher Set Collar Idler and Bushing End Cap, Outer Grease Fitting Idler Bushing Lip Seal for End Cap Pipe Plug Head Gasket Bearing Spacer Collar, Outer... - Page 8 DANGER type) uses a set collar behind the seal spring. Two setscrews must be loosened before shaft can be BEFORE OPENING ANY VIKING PUMP removed Access to collar setscrews is through seal LIQUID CHAMBER (PUMPING CHAMBER, access hole on right-hand side of mounting bracket RESERVOIR, RELIEF VALVE ADJUSTING (viewed from shaft end.
- Page 9 ASSEMBLY RIGHT SIDE Standard Mechanical Seal OF PUMP (Synthetic Rubber Bellows Type) SEAL ACCESS HOLE (FOR SETSCREWS) The seal used in this pump is simple to install and good performance will result if care is taken during installation. SPRING ADAPTER MECHANICAL SEAL (ROTARY MEMBER) The principle of the mechanical seal is contact between the rotary and stationary members.
- Page 10 A tapered sleeve is available, at extra cost, for Q, QS and SPRING M pumps from Viking Pump Division for seal installation MECHANCIAL SEAL on shaft. Refer to Figure 8. LS pump shaft is tapered (ROTARY MEMBER) and an installation sleeve is not available.
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Page 11: Optional Teflon Seal
A tapered sleeve is available, at extra cost, for Q, QS and M tapered sleeve. pumps from Viking Pump Division for seal installation on shaft. LS size pump shaft is tapered and installation sleeve Move rotary member so setscrews are directly below seal is not available. -
Page 12: Thrust Bearing Adjustment
THRUST BEARING ADJUSTMENT INSTALLATION OF CARBON GRAPHITE BUSHINGS Refer to FIGURE 12. Loosen two setscrews over each outer and inner end When installing carbon graphite bushings, extreme care caps. must be taken to prevent breaking. Carbon graphite is a brittle material and easily cracked. If cracked, the bushing Turn inner end cap clockwise (viewed from shaft end) will quickly disintegrate. -
Page 13: Pressure Relief Valve Instructions
PRESSURE RELIEF VALVE DISASSEMBLY INSTRUCTIONS DANGER BEFORE OPENING ANY VIKING PUMP LIQUID CHAMBER (PUMPING CHAMBER, RESERVOIR, RELIEF VALVE ADJUSTING CAP FITTING, ETC.) BE SURE: 1. THAT ANY PRESSURE IN CHAMBER HAS BEEN COMPLETELY VENTED THROUGH SUCTION OR DISCHARGE LINES OR OTHER APPROPRIATE OPENINGS OR CONNECTIONS. -
Page 14: Series 123 And 4123 Sizes Ls, Q, Qs, M
PARTICULAR PURPOSE. No officer or employee allow while pump is in operation. IDEX Corporation or Viking Pump, Inc. authorized to alter this warranty. IMPORTANT In ordering parts for pressure relief valve, always give model number and serial number of pump as it appears on nameplate and name of part wanted.
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