Central Pneumatic 68128 User Manual

Central Pneumatic 68128

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1” PINLESS

AIR IMPACT WRENCH

68128

SET UP AND OPERATING INSTRUCTIONS

Visit our website at: http://www.harborfreight.com

Read this material before using this product.

Failure to do so can result in serious injury.

SAVE THIS MANUAL.

Copyright

©

2010 by Harbor Freight Tools

®

. All rights reserved. No portion of this manual or any artwork

contained herein may be reproduced in any shape or form without the express written consent of

Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing

improvements, actual product may differ slightly from the product described herein. Tools required for

assembly and service may not be included.

For technical questions or replacement parts, please call 1-800-444-3353.

Table of Contents

Questions and Answers:

A
Alexander FuentesAug 10, 2025
How to fix decreased output on Central Pneumatic Power Tool?
- T
  Troy MillerAug 10, 2025
  To address decreased output in your Central Pneumatic Power Tool, start by checking for loose connections and ensuring your air supply provides sufficient airflow (CFM) at the required pressure (PSI), not exceeding 90 PSI. Also, clean around the trigger to allow free movement, lubricate the tool with air tool oil and grease as directed, and clean the air inlet screen. Ensure the housing is properly assembled and tight, and repair any hose or connection air leaks. If issues persist, a qualified technician should clean and lubricate the mechanism, and you might consider installing an in-line filter in the air supply.
J
Jose RamirezAug 19, 2025
What to do if Central Pneumatic Power Tool has severe air leakage?
- C
  Charles EdwardsAug 19, 2025
  If your Central Pneumatic Power Tool has severe air leakage, check first for incorrect alignment and uneven gaps. If you notice cross-threading, disassemble the tool and replace any damaged parts before using it again. Ensure the housing assembly is tightened correctly; if it can't be tightened properly, the internal parts may be misaligned. Replace any damaged components and clean or replace the valve assembly.
C
ckellerAug 30, 2025
Why Central Pneumatic Power Tool housing heats during use?
- E
  Eric JohnsonAug 30, 2025
  If the housing of your Central Pneumatic Power Tool heats up during use, lubricate it using air tool oil and grease as directed. If the problem continues, have a qualified technician inspect the internal mechanism and replace parts as needed.

Central Pneumatic 68128 Specifications

General

SKU	68128
Type	Impact Wrench
Average Air Pressure	90 PSI
Min Hose Size	3/8 inch
Housing Material	Aluminum
Drive Size	1/2 inch
Average Air Consumption	4.5 CFM
Air Inlet Size	1/4 inch-18 NPT
Impacts Per Minute	1200 IPM

Summary

Set Up and Operating Instructions

Important Safety Instructions

Instructions Pertaining to Risk of Fire, Electric Shock, or Injury

Covers instructions related to fire, electric shock, and injury risks when using the tool.

Personal Safety Precautions

Stay Alert and Use Common Sense

Emphasizes staying alert and avoiding use while impaired to prevent injury.

Avoid Unintentional Starting

Instructions on ensuring the switch is off before connecting to air supply.

Wear Eye Protection

Mandates wearing ANSI-approved safety goggles for eye protection.

Wear Hearing Protection

Recommends hearing protection due to high intensity noise exposure.

Tool Use and Care Guidelines

Do Not Force the Tool

Use the correct tool for the application to ensure safety and efficiency.

Proper Trigger Operation

Ensures the tool's trigger functions correctly for control.

Disconnect Air Supply for Maintenance

Disconnects the tool from the air source before adjustments or storage for safety.

Service and Maintenance Procedures

Qualified Service Personnel

Tool service must be performed only by qualified repair personnel.

Air Source Requirements and Safety

Maximum Air Pressure Limit

Never connect to an air source exceeding 200 PSI to prevent tool damage or injury.

Prohibited Air Sources

Do not use oxygen, carbon dioxide, or combustible gases as an air source.

Symbols and Specific Safety Instructions

General Safety Warnings

Highlights that manual warnings may not cover all situations; common sense is essential.

Accessory Compatibility

Only use accessories rated for the tool's forces to prevent breakage or injury.

Install In-Line Shutoff Valve

Install a shutoff valve for immediate control over air supply in emergencies.

Use Tool with Both Hands

Safe Tool Placement When Idle

Specifications

Initial Tool Set Up and Assembly

Air Supply Setup and Operation

Incorporate Recommended Air Line Components

Avoid Female Quick Couplers on Tool

Warning against female quick couplers to prevent accidental operation.

Close In-Line Safety Valve

Adjust Air Compressor Regulator

Set regulator for proper tool power without exceeding maximum air pressure.

Operating Instructions

Inspect Tool Before Use

General Operating Instructions

Use Correct Impact Sockets

Warning to use only 1" Drive Impact type sockets (not supplied).

Select Direction and Speed

Check Force and Airflow

Caution: Exceeding Pressure Rating

Do not exceed the tool's maximum air pressure rating (90 PSI) to prevent failure or injury.

Post-Operation Procedures

User Maintenance Instructions

Daily Air Supply Maintenance

Troubleshooting Guide

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