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

Technical service manual, Contents introduction

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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