TECHNICAL SERVICE MANUAL
VIKING PUMP, INC. • A Unit of IDEX Corporation • Cedar Falls, IA 50613 USA
SECTION TSM 630.2
PAGE 1 OF 12
ISSUE K
TECHNICAL SERVICE MANUAL
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 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.
In the Viking model number system, basic size letters are
combined with series number (124A, 4124A, 4124AE, 126A,
4126A, 124AE, 124E, 123A, 4123A, 127A, 4127A, 224A,
4224A, 224AE, 4224AE, 226A, 4226A, 223A, 4223A, 227A,
4227A) indicating basic pump construction and material.
A = Universal Seal Pump
AE = Universal Seal Pump with larger rotor shaft (L, LQ, LL only)
E = Universal Seal with electric heating
FIGURE 3
Size QS illustrated
(Non-Jacketed)
Special Information . . . . . . . . . . . . . . . . . . . 3
Maintenance . . . . . . . . . . . . . . . . . . . . . . 3
Disassembly . . . . . . . . . . . . . . . . . . . . . . 4
Assembly . . . . . . . . . . . . . . . . . . . . . . . . 5
Mechanical Seal Replacement . . . . . . . . . . . . . 6
Seal Removal. . . . . . . . . . . . . . . . . . . . . 6
Seal Installation. . . . . . . . . . . . . . . . . . . . 7
Thrust Bearing Adjustment . . . . . . . . . . . . . . . 8
Installation of Carbon Graphite Bushings . . . . . . . . 9
Pressure Relief Valve Instructions . . . . . . . . . . . 9
Disassembly . . . . . . . . . . . . . . . . . . . . .10
Assembly . . . . . . . . . . . . . . . . . . . . . . .10
Pressure Adjustment . . . . . . . . . . . . . . . . .10
Heat Cartridges . . . . . . . . . . . . . . . . . . . . .10
FIGURE 2
Size Q illustrated
(Non-Jacketed)
FIGURE 1
Size LS illustrated
(Shown with jacketed bracket and relief valve)
UNMOUNTED PUMP
UNITS
Non-Jacketed Jacketed
Packed Mech. Seal Packed Mech. Seal
LS124A
LS124E
LS126A
LS123A
LS127A
Q124A
Q124E
Q126A
Q123A
Q127A
QS124A
QS124E
QS126A
QS123A
QS127A
M124A
LS4124A
LS4126A
LS4123A
LS4127A
Q4124A
Q4126A
Q4123A
Q4127A
QS4124A
QS4126A
QS4123A
QS4127A
M4124A
LS224A
LS226A
LS223A
LS227A
Q224A
Q226A
Q223A
Q227A
QS226A
QS223A
QS227A
M224A
LS4224A
LS4226A
LS4223A
LS4227A
Q4224A
Q4226A
Q4223A
Q4227A
QS4226A
QS4223A
QS4227A
M224A
Units are designated
by the unmounted
pump model numbers
followed by a letter
indicating drive style.
V = V-Belt
D = Direct Connected
R = Viking Speed
Reducer
P = Commercial
Speed Reducer
Model Chart Number
Electronic copies of the most current TSM issue can be found on the Viking Pump website at www.vikingpump.com
UNIVERSAL SEAL HEAVY DUTY PUMPS
SERIES 124A/AE, 4124A/AE, 124E, 224A, & 4224A CAST IRON
SERIES 126A, 4126A, 226A & 4226A DUCTILE IRON
SERIES 123A, 4123A, 223A & 4223A STEEL
SERIES 127A, 4127A, 227A & 4227A STAINLESS STEEL
SIZES LS, Q, QS & M
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