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Item 66984 

For technical questions, please call 1-888-866-5797. 

Page 6

Specifications

Maximum Air Pressure

90 PSI

Air Inlet

3/8″ -18 NPT

Drive Size

3/4″ Square Drive

Maximum Speed*

762 BPM (Blows Per 
Minute)

Average Air 
Consumption

7 CFM @ 90 PSI

Maximum Torque

1000 ft-lb

*  Maximum speed at stated maximum air pressure.  

Excess air pressure is hazardous and may cause the 
tool to exceed stated maximum speed. 

Required Air Hose: 1/2″ (Not Supplied)

Initial Tool Set Up/Assembly

  Read the ENTIRE IMPORTANT 

SAFETY INFORMATION section at the 
beginning of this manual including all 
text under subheadings therein before 
set up or use of this product.

Note:

  For additional information regarding the 

parts listed in the following pages, refer to the 
Assembly Diagram near the end of this manual.

Air Supply

 

TO PREVENT EXPLOSION: 
Use only clean, dry, regulated, compressed air to power this tool.  Do not use 
oxygen, carbon dioxide, combustible gases, or any other bottled gas as a power 
source for this tool.

1. 

Incorporate a filter, regulator with pressure 
gauge, oiler, in-line shutoff valve, and quick 
coupler for best service, as shown in the 
air tool setup examples at the end of this 
section. 

 An in-line shutoff ball valve is 

an important safety device because it 
controls the air supply even if the air 
hose is ruptured.  The shutoff valve 
should be a ball valve because it can be 
closed quickly.

Note: 

If an automatic oiler system is not used, 

add a few drops of Pneumatic Tool Oil to the 
airline connection before operation.  Add a 
few more drops after each hour of continual 
use.

2. 

Attach an air hose to the compressor’s 
air outlet.  Connect the air hose to the air 
inlet of the tool.  Other components, such 
as a connector and quick coupler, will 
make operation more efficient, but are not 
required.

WARNING!  TO PREVENT SERIOUS INJURY 

FROM ACCIDENTAL OPERATION: 
Do not install a female quick coupler 
on the tool.

  Such a coupler contains an 

air valve that will allow the air tool to retain 
pressure and operate accidentally after the 
air supply is disconnected.

Note: 

Air flow, and therefore tool performance, 

can be hindered by undersized air supply 
components.

Summary of Contents for CentralPneumatic 66984

Page 1: ...ence 21a When unpacking make sure that the product is intact and undamaged If any parts are missing or broken please call 1 888 866 5797 as soon as possible Copyright 2016 by Harbor Freight Tools All...

Page 2: ...us injury Save all warnings and instructions for future reference The term power tool in the warnings refers to your power tool Work Area Safety 1 Keep work area clean and well lit Cluttered or dark a...

Page 3: ...azards in the work area Power Tool Use and Care 1 Do not force the power tool Use the correct power tool for your application The correct power tool will do the job better and safer at the rate for wh...

Page 4: ...8 This product is not a toy Keep it out of reach of children 9 People with pacemakers should consult their physician s before use Electromagnetic fields in close proximity to heart pacemaker could ca...

Page 5: ...Pounds per square inch of pressure ft lb Foot pounds of torque BPM Blows per minute CFM Cubic Feet per Minute flow SCFM Cubic Feet per Minute flow at standard conditions NPT National pipe thread taper...

Page 6: ...rce for this tool 1 Incorporate a filter regulator with pressure gauge oiler in line shutoff valve and quick coupler for best service as shown in the air tool setup examples at the end of this section...

Page 7: ...t the air output is enough to properly power the tool but the output will not exceed the tool s maximum air pressure at any time Adjust the pressure gradually while checking the air output gauge to se...

Page 8: ...ging tool or work piece C Regulator Adjusts air pressure to tool D Lubricator optional For air tool lubrication E Coupler and Plug Provides each connections F Leader Hose optional Increases coupler li...

Page 9: ...all Valve To drain moisture from system G Branch Air Line 1 2 minimum recommended Brings air to point of use H Filter Prevents dirt and condensation from damaging tool or work piece I Air Cleaner Drye...

Page 10: ...to reach work area without creating a tripping hazard or exposing air hose to possible damage Also avoid sharp bends and do not place items on hose during use 3 The air hose must be long enough to rea...

Page 11: ...l detach air supply safely discharge any residual air pressure in tool and release Trigger before performing any inspection maintenance or cleaning procedures TO PREVENT SERIOUS INJURY FROM TOOL FAILU...

Page 12: ...hose connection air leaks 6 Have qualified technician clean and lubricate mechanism Install in line filter in air supply as stated in Initial Set Up Air Supply 7 Replace all vanes Housing heats during...

Page 13: ...Item 66984 For technical questions please call 1 888 866 5797 Page 13...

Page 14: ...IN FACT THE MANUFACTURER AND OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS AND NOT BY THE BUYER THE BUYER ASSUMES A...

Page 15: ...13 Housing 1 14 Bearing 1 15 Front End Plate 1 16 Pin 1 17 Rotor 1 18 Vane 6 19 Cylinder 1 20 Rear End Plate 1 21 Pin 1 22 Bearing 1 Part Description Qty 23 Gasket 1 24 Rear End Plate 1 25 Gasket 4 26...

Page 16: ...es so the above limitation of exclusion may not apply to you THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS To ta...

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