Viking Pump TSM141.2: LS-M 125/4125 - Manual

SECTION TSM 141.2
PAGE
1 Of 12
ISSUE f
VIKING PUMP, INC. • A Unit of IDEX Corporation •
Cedar Falls, IA 50613 USA
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 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 (125 and 4125) and used to
indicate either an unmounted pump or mounted pump unit.
fIgURE 1
Size LS
Introduction . . . . . . . . . . . . . . . . . . . . . . . 1
Special Information . . . . . . . . . . . . . . . . . . . 2
Maintenance . . . . . . . . . . . . . . . . . . . . . . 2
Packed Pumps . . . . . . . . . . . . . . . . . . . . . 3
Mechanical Seal Pumps . . . . . . . . . . . . . . . . 6
Standard Rubber Bellows Type . . . . . . . . . . . 8
Optional PTFE Seal . . . . . . . . . . . . . . . . . 9
Thrust Bearing Adjustment . . . . . . . . . . . . . . . 10
Installation of Carbon Graphite Bushings . . . . . . . . 11
Pressure Relief Valve Instructions . . . . . . . . . . 11
fIgURE 2
Sizes Q and M
fIgURE 3
Size QS
UNMOUNTED PUMP UNITS
PACKED MECH. SEAL
LS125 LS4125
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
Q125 Q4125
QS125 QS4125
M125 M4125
This manual deals only with Series 125 and 4125 Heavy
Duty Bracket Mounted Pumps. Refer to figures 1 through
15 for general configuration and nomenclature used in this
manual. Pump specifications and recommendations are
listed in Catalog Section 141, Series 125 and 4125 Heavy
Duty Bracket Mounted Pumps.
Electronic copies of the most current TSM issue can be found on the Viking Pump website at www.vikingpump.com
HEAVY-DUTY BRACKET MOUNTED PUMPS
SERIES 125 AND 4125
SIZES LS, Q, QS, M