SECTION TSM 628
PAGE 1 OF 8
ISSUE A
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 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 (4124B, 4224B) indicating
basic pump construction material.
This manual deals only with Series 4124B (non-jacketed)
and 4224B (jacketed) Heavy Duty Bracket Mounted Pumps.
Refer to Figures 1 through 7 for general configuration and
nomenclature used in this manual. Pump specifications
and recommendations are listed in Catalog Section 628,
Viking Behind the Rotor Seal Internal Gear Pumps.
Note: Series 4124B and 4224B pumps fitted with optional
pinned-seat seals (the abrasive liquid seals used in 4624B
Series pumps) should reference Technical Service Manual
410.4 for information on seal replacement.
Safety Information & Instructions . . . . . . . . . . . . 2
Special Information . . . . . . . . . . . . . . . . . . . 3
Maintenance . . . . . . . . . . . . . . . . . . . . . . 3
Disassembly . . . . . . . . . . . . . . . . . . . . . . 4
Assembly . . . . . . . . . . . . . . . . . . . . . . . . 5
Thrust Bearing Adjustment . . . . . . . . . . . . . . . 6
Installation of Carbon Graphite Bushings . . . . . . . . 6
Pressure Relief Valve Instructions . . . . . . . . . . . 7
UNMOUNTED PUMP
UNITS
G4124B
H4124B
HL4124B
AK4124B
K4124B
KK4124B
L4124B
LQ4124B
LL4124B
H4224B
HL4224B
K4224B
KK4224B
L4224B
LQ4224B
LL4224B
B = Bracket Mounted Pump
with Mechanical Seal
Behind the Rotor
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
Electronic copies of the most current TSM issue can be found on the Viking Pump website at www.vikingpump.com
FIGURE 1 - K4124B FIGURE 2 - L4224B
BEHIND THE ROTOR SEAL HEAVY DUTY PUMPS
SERIES 4124B AND 4224B CAST IRON
SIZES G, H, HL, AK, K, KK, L, LQ, LL
