Viking Pump TSM143: N-P 335/4335 - Manual

SECTION TSM 143
PAGE
1 Of 15
ISSUE E
VIKING PUMP, INC. • A Unit of IDEX Corporation •
Cedar Falls, IA 50613 USA
TECHNICAL SERVICE MANUAL
CONTENTS
INTRODUCTION
MODEl NUMbER ChART
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 the complete name of the part, part number
and material with the model number and serial number of
the 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 the series number (335 and 4335) indicating
both unmounted or mounted pump unit.
UNMOUNTED PUMP UNITS
PACKED MECh.
SEAl
Units are designated by the un-
mounted pump model numbers
followed by a letter indicating drive
style.
P =Commerical Speed Reducers
N335 N4335
R335 R4335
P335 P4335
This manual deals only with Series 335 and 4335 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 143, for series 335 and 4335 Heavy-Duty Pumps.
DANGER !
before opening any Viking pump liquid cham-
ber (pumping chamber, reservoir, relief valve
adjusting cap fitting etc.) be sure:
1. That any pressure in 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 the 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 the above listed precaution-
ary measures may result in serious injury or
death.
hEAVy DUTy PUMPS
SERIES 335 AND 4335
SIZES N, R, AND P
fIGURE 1
Introduction 1
Special Information 2
Maintenance 2
Packed Pumps 4
Mechanical Seal Pumps 8
Optional PTFE Seal 12
Thrust Bearing Adjustment 13
Installation of Carbon Graphite Bushings 13
Pressure Relief Valve Instructions 14
Warranty 15
Electronic copies of the most current TSM issue can be found on the Viking Pump website at www.vikingpump.com