Viking pump LV3900 User Manual

SECTION TSM 110.2
PAGE 1 OF 6
ISSUE C
VIKING PUMP, INC. • A Unit of IDEX Corporation • Cedar Falls, IA 50613 USA
TECHNICAL SERVICE MANUAL
Maintenance .......................................................................
2
Repair .................................................................................
3
Thrust Bearing Adjustment .................................................
4
CONTENTS
INTRODUCTION
This bulletin deals exclusively with the Model LV3900 Heavy
Duty Pump. The illustrations used are to help you identify
pump parts by name and to assist in the maintenance and
repair of your pump.
When ordering repair parts, secure a parts list from your
Viking representative and be sure to give the complete part
name and material as well as the pump model and serial
number.
MODEL LV3900
FIGURE 1
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 the chamber has been
completely vented through the suction or
discharge lines or other appropriate openings
or connections.
2. That the driving means (motor, power takeoff,
turbine, engine, etc.) has been “locked out”
or made non- operational so that it cannot be
started while work is being done on 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 above listed precaution-
ary measures may result in serious injury or
death.
Catalog Ratings
Nominal Flow GPM 140
M 3/hr 32
Pressure Range PSI 200 PSI: 100 SSU and
above. (Contact factory
for pressures greater than
200 PSI)
Bar 14 Bar: 20 cSt and above
7 Bar: below 20 cSt
Temp. Range (°F) + 225
(°C) + 120
Viscosity Range Up to 750 SSU
To extend the life of the LV3900, it is recommended that
the pump be operated within the catalog ratings whenever
possible.
HEAVY-DUTY BRACKET MOUNTED PUMPS
MODEL LV3900
MAINTENANCE AND REPAIR INSTRUCTIONS
Electronic copies of the most current TSM issue can be found on the Viking Pump website at www.vikingpump.com

Viking pump LV3900 Specifications

General

Brand	Viking pump
Model	LV3900
Category	Water Pump
Language	English

Summary

Introduction

Danger Warnings

Safety Information and Instructions

General Safety Precautions

Covers critical safety steps before opening, operating, or working on the pump to prevent injury or death.

Pressure Protection and Access

Ensures the pump has pressure protection and allows safe access for maintenance and inspection.

Maintenance Procedures

Lubrication Guidelines

Instructions for applying external lubrication with a handgun at all fittings for pump longevity.

Packing Adjustment

Initial adjustment of new packing to control leakage as it runs in, requiring careful handling.

Cleaning, Storage, and Tools

Guidelines for keeping the pump clean, proper storage procedures, and a list of suggested repair tools.

Exploded View and Parts Identification

Parts List

Table detailing all parts of the LV3900 pump with corresponding item numbers for identification.

Disassembly and Assembly Procedures

Disassembly Steps

Step-by-step instructions for taking apart the LV3900 pump, including marking and careful handling of components.

Assembly Steps

Step-by-step instructions for reassembling the LV3900 pump, ensuring proper lubrication and alignment.

Thrust Bearing Adjustment

Standard End Clearance Adjustment

Procedure to adjust thrust bearing assembly for standard end clearance and secure it properly.

High Viscosity Liquid Considerations

Guidance on additional end clearances needed for high viscosity liquids and factory consultation.

Warranty Information