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Lincoln A Series - User Manual

Lincoln A Series
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Model A52347R-248 (250-275
Gal
Form 402002
APRIL - 2005
MODELS 4490, 4491, 4492
3.5:1 AIR OPERATED PUMPS
SERIES “A”
SINGLE ACTION FLUID PUMP
Model 4491 (250-275 Gal)
Model 4490 (16-55 Gal)
Model 4492
(Stub Pump)
Section
Page
-A6
-63

Other manuals for Lincoln A Series

Questions and Answers

  • D
    Dawn DanielsAug 14, 2025
    What to do if Lincoln A Series does not dispense grease?
    • M
      Melanie MurrayAug 14, 2025
      If your Lincoln Water Pump is not dispensing grease, first, replace the empty grease cartridge. Also, inspect the cartridge housing for damage, as the follower might be stuck. If these steps don't resolve the issue, the plunger, pump body, or pump check might be worn or damaged, requiring replacement.
  • C
    Craig WeaverAug 17, 2025
    Why my Lincoln A Series does not operate?
    • D
      Douglas RiosAug 17, 2025
      If your Lincoln Water Pump isn't operating, ensure the hydraulic supply is turned on or properly connected. If the issue persists, the piston or plunger might be stuck, requiring disassembly and inspection for damaged parts. Also, high hydraulic backpressure could be the cause, so try connecting the pump to a hammer hydraulic return circuit. Finally, check for broken return springs and replace them if necessary.
  • G
    grayjoeAug 20, 2025
    How to fix lubricant in spring chamber of Lincoln A Series?
    • J
      Jessica MortonAug 20, 2025
      If you find lubricant or hydraulic fluid in the spring chamber of your Lincoln Water Pump, it's likely due to a worn seal on the plunger or piston. To fix this, disassemble the pump and replace the worn seals.
  • J
    Janet HillAug 25, 2025
    What to do if my Lincoln Water Pump cycles but doesn’t deliver fluid?
    • D
      Douglas LewisAug 25, 2025
      If your Lincoln Water Pump cycles but doesn't deliver fluid, first, repeat the priming operation to address potential loss of prime. Then, verify that the container has an adequate amount of fluid. Finally, disassemble the check valve, remove the ball, and clean and inspect the ball seat area to ensure the ball check valve is functioning correctly.
  • L
    lauramunozAug 27, 2025
    Why does the Lincoln Engine piston short stroke or chatter at the top of the stroke?
    • J
      Jacob WrightAug 28, 2025
      If the Lincoln Engine piston short strokes or chatters at the top of the stroke, it might be due to the hydraulic system compensating for pressure spikes by reducing the flow rate. These hydraulic motors won't function correctly in such systems. Another possible cause is a worn or damaged pilot valve assembly, in which case, consider replacing it.
  • S
    Stephanie WalkerAug 31, 2025
    What to do if the Lincoln Engine piston moves to the bottom of the stroke and does not shift?
    • C
      Charles AllenAug 31, 2025
      If the Lincoln Engine piston moves to the bottom of the stroke but doesn't shift, the pilot valve assembly or the power valve assembly could be worn or damaged, requiring replacement. Also, the trip rod or pilot valve stem might be broken, so check these components and replace any damaged ones.
  • L
    Linda FlynnSep 3, 2025
    Why is the Lincoln Engine piston short stroking or chattering at the bottom of the stroke?
    • J
      John RyanSep 3, 2025
      If the Lincoln Engine piston short strokes or chatters at the bottom of the stroke, it could be due to a restricted hydraulic return to the tank. Check the return line for any restrictions. Another possibility is a worn or damaged pilot valve assembly, which may need replacement.
  • H
    hobbssarahSep 6, 2025
    How to troubleshoot a Lincoln Engine hydraulic motor that does not operate?
    • A
      Alan VazquezSep 6, 2025
      If the Lincoln Engine hydraulic motor doesn't operate, it may be due to a restricted or inadequate hydraulic supply. Ensure that the hydraulic supply has sufficient pressure and flow to operate the motor. Another possible cause is a restricted hydraulic return to the tank; in this case, check the return line for any restrictions.
  • B
    Brian RuizSep 9, 2025
    What to do if Lincoln Engine piston moves to top of stroke and does not shift?
    • P
      parkerbrittanySep 9, 2025
      If the Lincoln Engine piston moves to the top of the stroke but doesn't shift, it could be due to a worn or damaged pilot valve assembly or a worn or damaged power valve assembly. Consider replacing the pilot valve assembly or the power valve assembly.

Summary

Safety Precautions and Warnings

General Operating Safety

Observe instructions, disconnect air coupler when not in use, and wear eye protection.

First Aid for Injection Injuries

Seek immediate medical attention for skin penetration injuries.

Compressed Air Quality Requirements

Operate with clean, dry compressed air only; flammable gases are prohibited.

Product Description and Models

Pump Model Overview

Air operated single acting pumps for low/medium viscosity lubricants.

Model 4492 Stub Pump Details

Stub pump attachable to standpipe or used with optional suction kit.

Essential Foot Valve Requirement

The pump will not operate without a foot valve.

Appropriate Use Guidelines

Compatible Lubricant Fluids

For automotive petroleum based and synthetic motor oils, transmission, and hydraulic fluids.

Recommended Pump Applications

Dispensing lubricants from reservoirs into containers, crankcases, or gearboxes.

Critical System Warnings

Risks of Misuse and Modification

Warnings against exceeding pressure, modification, incompatible chemicals, and worn parts.

Pump Installation Procedures

System Flushing and Preparation

Flush pump with lubricant and system lines with solvent before installation.

Recommended Installation Practices

Use shut-off valves, regulators, and avoid Teflon tape for proper installation.

Bung Bushing Installation Guide

Bung Bushing and Pump Tube Assembly

Steps for applying sealant, threading bushing, and positioning the pump tube.

Stand Pipe Installation Guide

Standpipe Setup and Connections

Install pump tube, union, and shut-off valve for standpipe systems.

Alternative Suction Kit Options

Information on Universal and Remote Suction Kits for different tank configurations.

System Start-Up and Priming

Pump Priming and System Purging

Purge air from the pump and system for reliable operation.

Pressure Relief Procedure

Safe Pressure Release Steps

Procedure for safely relieving pressure before service or container changes.

Repair and Service Information

Service Contact and Parts Ordering

Contact authorized dealers for service and order parts by part number.

Pump Disassembly and Reassembly

Detailed Disassembly Steps

Step-by-step guide for disassembling the fluid pump components.

Reassembly and Seal Installation

Guide for reassembly, including special care for U-cup seal installation.

Lincoln A Series Specifications

General IconGeneral
BrandLincoln
ModelA Series
CategoryWater Pump
LanguageEnglish

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