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Macnaught LEVERGUN K40-01 - User Manual

Macnaught LEVERGUN K40-01
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KL8 Issue 18 © 2017 Page 1 of 12
INSTRUCTION MANUAL
Introduction
K40/K45 LEVERGUN™
Product Description
Thank you for purchasing a Macnaught K40 or K45
Lever Action Grease Gun
PLEASE READ THIS SAFETY INFORMATION
CAREFULLY BEFORE USE.
Read and retain this instruction manual to assist you
in the operation and maintenance of this product.
‘Cautions’ are listed throughout this manual to advise
of actions that may cause damage to your
equipment.
Your Macnaught LEVERGUN is a High Quality Lever
Action grease gun engineered for durability and high
pressure greasing.
It is designed for use with 400g (K32) or 450g (K29)
cartridges or bulk grease. The filler/bleeder valve in
the head also allows clean filling from 20kg (35lb)
grease pails using a Macnaught “J3” Grease Gun
Filler Pump.
A wide range of Macnaught greasing accessories
including Flexible Extensions, Needle Point
Couplers, Adaptors and Button Head Couplers are
available from your Macnaught dealer.
Grease Filling Procedure
CAUTION
Caution must be observed when either unscrewing
the barrel or unscrewing the pull handle from the
follower rod as the large follower spring inside the
barrel is energised.
4) Remove both caps from grease cartridge. Insert
into barrel, larger open end first. Ensure the seal
washer is in position and screw the barrel to head
tightly.
5) Bleed air from grease (see Figure 5).
Bulk Fill
1) Select the correct Follower Position.
2) Unscrew Barrel and “Lock” Follower (Figure 4).
3) Insert the Barrel into grease and slowly pull the
Follower Rod out while pushing the Barrel further
into grease (see Figure 2).
Cartridge Fill
1) Select the correct Follower Position.
2) Unscrew Barrel and “Lock” Follower (Figure 4).
3) Pull Follower Rod out until groove in rod can be
moved into slot in Barrel End Cap, lock the rod into
end cap.
Figure 2 Figure 3
Includes models
K40-01
K40-03
K45-01
K45-01-11
K45-02
Need Assistance?
Macnaught USA Inc (813) 628-5506 info@macnaughtusa.com

Questions and Answers

  • M
    Melinda JacksonAug 2, 2025
    What to do if Macnaught LEVERGUN K40-01 Tools gun pumps little or no grease?
    • M
      Maria ShannonAug 2, 2025
      If your Macnaught Tools gun pumps little or no grease, there are several potential causes: * **Air lock or follower stuck:** Check the condition of the cartridge and replace it if necessary. You can also lock the follower rod and push the follower into the cartridge. * **Grease too thick or cold:** Use an appropriate grease for the temperature conditions. * **Dirty or damaged ball seat:** Remove the spring and ball, then disassemble, clean, and inspect all components, replacing them as needed. * **Worn or damaged piston O-Ring:** Remove the handle, pull out the plunger, and replace the O-Ring.
  • R
    Renee MillerAug 16, 2025
    Why is grease leaking past the follower on my Macnaught LEVERGUN K40-01 Tools?
    • A
      Adam HernandezAug 16, 2025
      Grease may leak past the follower on your Macnaught Tools due to several reasons: * **Damaged follower:** Replace the follower. * **Overfilling:** Stop pumping the filler pump when the groove on the piston rod is visible at the back of the barrel. * **Incorrect follower position:** If using bulk filling grease, make sure the follower is in the forward position.

Summary

Introduction

Product Description

Details the Macnaught LEVERGUN as a durable, high-pressure grease gun for cartridges or bulk grease.

Safety Precautions

Advises caution regarding spring tension when unscrewing barrel or pull handle.

Grease Filling Procedures

Cartridge Fill

Step-by-step guide to filling the grease gun using a 400g or 450g cartridge.

Bulk Fill

Instructions for filling the grease gun with bulk grease, including locking the follower.

Using a Macnaught J3 filler pump

Guide for using the J3 filler pump to fill the grease gun with grease.

Locking the Follower

Bleeding Air from the Grease

Troubleshooting Guide

Spare Part Diagram

Spare Parts

Macnaught LEVERGUN K40-01 Specifications

General IconGeneral
ModelLEVERGUN K40-01
ManufacturerMacnaught
CategoryTools
TypeGrease Gun
ActionLever
PressureUp to 10, 000 psi
Operating PressureUp to 10, 000 psi
Hose Length300mm
Capacity450g

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