Clarke CAT143 User Manual

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OPERATING & MAINTENANCE

INSTRUCTIONS

ORIGINAL INSTRUCTIONS GC0220 - ISS 2

RIGHT ANGLE DIE GRINDER

MODEL NO: CAT143

PART NO: 3120157

Table of Contents

Questions and Answers:

S
Stephen GonzalesJul 29, 2025
Why does my Clarke Grinder run at normal speed but slow down under load?
- C
  Christopher GomezJul 29, 2025
  This issue may arise due to excessive pressure applied to the tool; reduce the force you're applying. Alternatively, the motor parts might be worn, in which case, return the grinder to a Clarke dealer for repair. A further cause could be a worn or sticking mechanism due to a lack of lubricant. Try dripping air tool lubricating oil into the air inlet and allow it to soak into the moving parts before using the tool.
B
Brooke CannonAug 6, 2025
What to do if Clarke CAT143 Grinder tool will not run, but air flows freely from exhaust?
- M
  Mr. Shawn YoungAug 6, 2025
  The motor vanes may be stuck due to a buildup of foreign material. Disconnect the air supply and rotate the tool assembly manually. You can also try operating the tool in short bursts or dripping a few drops of air tool lubricating oil into the air inlet to soak the moving parts.
N
Nicole WhiteAug 12, 2025
Why does my Clarke Grinder tool run slowly and air flows weakly from exhaust?
- T
  Todd KerrAug 13, 2025
  The slow operation and weak airflow could be due to motor parts jammed with gum or dirt; examine the inlet air filter for cleanliness. Another cause could be the regulator being in a closed position; adjust the regulator to the open position. Also, general airflow may be blocked by dirt; try operating the tool in short bursts.
D
Dustin HallAug 20, 2025
What to do if Clarke Grinder tool will not shut off?
- B
  Bailey WhiteAug 20, 2025
  If the tool won't shut off, it could be that the throttle O-rings are damaged or ill-fitting in the seat. Return the grinder to a Clarke dealer for repair.

Clarke CAT143 Specifications

General

Brand	Clarke
Model	CAT143
Category	Grinder
Language	English

Summary

INTRODUCTION

IMPORTANT SAFETY INFORMATION

PRODUCT GUARANTEE

GENERAL SAFETY RULES

Work Environment Safety

Guidelines for maintaining a safe and clean operational area.

Power Tool Operation Safety

Essential safety precautions for using the air tool effectively and safely.

TRANSPORTATION AND STORAGE

Safe Handling and Storage

Procedures for safely transporting and storing the die grinder when not in use.

OVERVIEW OF THE DIE GRINDER

Component Identification

Visual overview and list of tool parts and accessories included in the package.

COMPRESSED AIR REQUIREMENTS

Air Supply Setup and Lubrication

Recommended air line configuration, pressure, and lubrication for optimal tool performance.

BEFORE USE PROCEDURES

Connecting the Air Tool

Step-by-step guide to connecting the die grinder to the compressed air supply.

COLLET INSTALLATION

Collet Selection and Fitting

Procedure for selecting and fitting the correct collet to the tool.

GRINDING STONE INSTALLATION

Attaching the Grinding Stone

How to securely attach and tighten a grinding stone into the collet.

SPEED ADJUSTMENT

Setting Operating Speed

Guide to adjusting the die grinder's operating speed using the built-in control.

OPERATING THE DIE GRINDER

Tool Operation Guide

Instructions for operating the trigger, managing pressure, and stopping the tool.

EXHAUST DEFLECTOR SETTING

Adjusting Exhaust Airflow

How to adjust the exhaust deflector for optimal airflow management.

DISCONNECTING THE AIR SUPPLY

Safe Air Supply Disconnection

Procedure for safely disconnecting the air hose from the tool after use.

TOOL STORAGE

Storage Procedures

Guidelines for storing the die grinder after use, including lubrication and protection.

TROUBLESHOOTING GUIDE

Problem Diagnosis and Solutions

A guide to identifying and resolving common issues encountered with the die grinder.

MAINTENANCE AND CARE

Daily Maintenance Tasks

Essential daily checks and lubrication steps to maintain tool condition.

Weekly Maintenance Checks

Regular weekly inspections, including air inlet filter cleaning.

Cleaning and Lubrication Procedures

Procedures for cleaning the tool body and lubricating internal parts.

Service and Repair Guidelines

When and how to perform or seek professional servicing for the die grinder.

PERFORMANCE CONSIDERATIONS

Factors Affecting Performance

Discussion of external factors that influence the die grinder's operation and efficiency.

ACCESSORIES INFORMATION

Available Accessories

Information on optional accessories compatible with the die grinder.

TECHNICAL SPECIFICATIONS

Tool Specifications

Detailed technical data of the die grinder, including dimensions, pressure, and speed.

PARTS LIST & DIAGRAM

Exploded View Diagram

A visual breakdown of the die grinder showing all components and their assembly.

PARTS LIST & DIAGRAM

Detailed Parts List

A numbered list detailing each component of the die grinder and its corresponding description.

DECLARATION OF CONFORMITY

Product Compliance Declaration

Formal statement confirming the product's adherence to EU directives and safety standards.

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