Central Pneumatic 66984 Manual de usuario

Revised Manual 11h

3/4” Heavy Duty Impact Wrench

66984 Air Impact Wrench

Read this material

before using this product.

Failure to do so

can result in serious injury.

SAVE THIS MANUAL.

When unpacking, make sure that the product is intact and undamaged.

If any parts are missing or broken, please call 1-800-444-3353 as soon as possible.

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

duced 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.

SKU 66984 For technical questions, please call 1-800-444-3353. Page 2

SAVE THIS MANUAL

Keep this manual for the safety

warnings and precautions, assembly,

operating, inspection, maintenance and

cleaning procedures. Write the product’s

serial number in the back of the manual near

the assembly diagram (or month and year of

purchase if product has no number). Keep

this manual and the receipt in a safe and dry

place for future reference.

Safety Alert Symbol and Signal

Words

In this manual, on the labeling,

and all other information

provided with this product:

This is the safety alert

symbol. It is used to alert

you to potential personal

injury hazards. Obey all

safety messages that

follow this symbol to avoid

possible injury or death.

DANGER indicates

a hazardous

situation which, if not

avoided, will result in death or

serious injury.

WARNING

indicates a

hazardous situation which, if

not avoided, could result in

death or serious injury.

CAUTION, used

with the safety

alert symbol, indicates a

hazardous situation which, if

not avoided, could result in

minor or moderate injury.

NOTICE is used to

address practices

not related to personal injury.

CAUTION, without

the safety alert

symbol, is used to address

practices not related to

personal injury.

IMPORTANT SAFETY

INSTRUCTIONS

INSTRUCTIONS PERTAINING

TO A RISK OF FIRE,

ELECTRIC SHOCK, OR

INJURY TO PERSONS

WARNING – When using tools, basic

precautions should always be

followed, including the following:

General

a. To reduce the risks of electric

shock, re, and injury to persons,

read all the instructions before

using the tool.

Work area

a. Keep the work area clean and well

lighted. Cluttered benches and dark

areas increase the risks of electric

shock, re, and injury to persons.

b. Do not operate the tool in

explosive atmospheres, such as in

the presence of ammable liquids,

gases, or dust. The tool is able to

create sparks resulting in the ignition

of the dust or fumes.

c. Keep bystanders, children, and

visitors away while operating the

SKU 66984 For technical questions, please call 1-800-444-3353. Page 3

tool. Distractions are able to result in

the loss of control of the tool.

Personal safety

a. Stay alert. Watch what you are

doing and use common sense

when operating the tool. Do not

use the tool while tired or under

the inuence of drugs, alcohol, or

medication. A moment of inattention

while operating the tool increases the

risk of injury to persons.

b. Dress properly. Do not wear loose

clothing or jewelry. Contain long

hair. Keep hair, clothing, and

gloves away from moving parts.

Loose clothes, jewelry, or long hair

increases the risk of injury to persons

as a result of being caught in moving

parts.

c. Avoid unintentional starting.

Be sure the switch is off before

connecting to the air supply. Do not

carry the tool with your nger on the

switch or connect the tool to the air

supply with the switch on.

d. Remove adjusting keys and

wrenches before turning the tool

on. A wrench or a key that is left

attached to a rotating part of the tool

increases the risk of personal injury.

e. Do not overreach. Keep proper

footing and balance at all times.

Proper footing and balance

enables better control of the tool in

unexpected situations.

f. Use safety equipment. A

dust mask, non-skid safety

shoes and a hard hat must

be used for the applicable

conditions. Wear heavy-duty work

gloves during use.

g. Always wear eye

protection. Wear ANSI-

approved safety goggles.

h. Always wear hearing

protection when using

the tool. Prolonged

exposure to high intensity

noise is able to cause hearing loss.

Tool use and care

a. Use clamps or another practical

way to secure and support the

workpiece to a stable platform.

Holding the work by hand or against

the body is unstable and is able to

lead to loss of control.

b. Do not force the tool. Use the

correct tool for the application. The

correct tool will do the job better and

safer at the rate for which the tool is

designed.

c. Do not use the tool if the switch

does not turn the tool on or off.

Any tool that cannot be controlled

with the switch is dangerous and

must be repaired.

d. Disconnect the tool from the

air source before making

any adjustments, changing

accessories, or storing the tool.

Such preventive safety measures

reduce the risk of starting the tool

unintentionally. Turn off and detach

the air supply, safely discharge any

residual air pressure, and release the

throttle and/or turn the switch to its off

position before leaving the work area.

SKU 66984 For technical questions, please call 1-800-444-3353. Page 4

e. Store the tool when it is idle out

of reach of children and other

untrained persons. A tool is

dangerous in the hands of untrained

users.

f. Maintain the tool with care. A

properly maintained tool is easier to

control.

g. Check for misalignment or binding

of moving parts, breakage of

parts, and any other condition

that affects the tool’s operation.

If damaged, have the tool serviced

before using. Many accidents are

caused by poorly maintained tools.

There is a risk of bursting if the tool is

damaged.

h. Use only accessories that are

identied by the manufacturer for

the specic tool model. Use of an

accessory not intended for use with

the specic tool model, increases the

risk of injury to persons.

Service

a. Tool service must be performed

only by qualied repair personnel.

b. When servicing a tool, use only

identical replacement parts. Use

only authorized parts.

c. Use only the lubricants supplied

with the tool or specied by the

manufacturer.

Air source

a. Never connect to an air

source that is capable of

exceeding 90 PSI. Over

pressurizing the tool may

cause bursting, abnormal operation,

breakage of the tool or serious injury

to persons. Use only clean, dry,

regulated compressed air at the rated

pressure or within the rated pressure

range as marked on the tool. Always

verify prior to using the tool that the

air source has been adjusted to the

rated air pressure or within the rated

air-pressure range.

b. Never use oxygen, carbon dioxide,

combustible gases or any bottled

gas as an air source for the tool.

Such gases are capable of explosion

and serious injury to persons.

SAVE THESE

INSTRUCTIONS.

SYMBOLS AND

SPECIFIC SAFETY

INSTRUCTIONS

Symbol Denitions

Symbol Property or statement

noNo-load speed

.../min Revolutions or reciprocation per

minute

PSI Pounds per square inch of pressure

ft-lb Foot-pounds of torque

BPM Blows per minute

CFM Cubic Feet per Minute ow

SCFM Cubic Feet per Minute ow at

standard conditions

NPT National pipe thread, tapered

Chart continued in next column.

SKU 66984 For technical questions, please call 1-800-444-3353. Page 5

Symbol Denitions

Symbol Property or statement

NPS National pipe thread, straight

WARNING marking concerning Risk

of Eye Injury. Wear ANSI-approved

eye protection.

WARNING marking concerning Risk

of Hearing Loss. Wear hearing

protection.

WARNING marking concerning Risk

of Respiratory Injury. Wear NIOSH-

approved dust mask/respirator.

WARNING marking concerning Risk

of Explosion.

Specic Safety Instructions

1. The warnings and precautions

discussed in this manual cannot

cover all possible conditions and

situations that may occur. It must

be understood by the operator that

common sense and caution are

factors which cannot be built into this

product, but must be supplied by the

operator.

2. WARNING: The brass components

of this product contain lead, a

chemical known to the State of

California to cause birth defects (or

other reproductive harm). (California

Health & Safety code § 25249.5, et

seq.)

3. Only use with accessories rated to

handle the forces exerted by this tool

during operation. Other accessories

not designed for the forces generated

may break and forcefully launch

pieces.

4. Attach all accessories properly to the

tool before connecting the air supply.

A loose accessory may detach or

break during operation.

5. Obey the manual for the air

compressor used to power this tool.

6. Install an in-line shutoff valve to allow

immediate control over the air supply

in an emergency, even if a hose is

ruptured.

7. Use this tool with both hands only.

Using tools with only one hand can

result in loss of control.

8. Do not lay the tool down until it has

come to a complete stop. Moving

parts can grab the surface and pull

the tool out of your control.

Vibration Precautions

This tool vibrates during use.

Repeated or long-term exposure to

vibration may cause temporary or

permanent physical injury, particularly to

the hands, arms and shoulders. To reduce

the risk of vibration-related injury:

1. Anyone using vibrating tools regularly

or for an extended period should

rst be examined by a doctor and

then have regular medical check-

ups to ensure medical problems are

not being caused or worsened from

use. Pregnant women or people

who have impaired blood circulation

to the hand, past hand injuries,

nervous system disorders, diabetes,

or Raynaud’s Disease should not use

this tool. If you feel any symptoms

related to vibration (such as tingling,

numbness, and white or blue ngers),

seek medical advice as soon as

possible.

2. Do not smoke during use. Nicotine

reduces the blood supply to the

SKU 66984 For technical questions, please call 1-800-444-3353. Page 6

hands and ngers, increasing the risk

of vibration-related injury.

3. Wear suitable gloves to reduce the

vibration effects on the user.

4. Use tools with the lowest vibration

when there is a choice.

5. Include vibration-free periods each

day of work.

6. Grip tool as lightly as possible (while

still keeping safe control of it). Let

the tool do the work.

7. To reduce vibration, maintain tool as

explained in this manual. If abnormal

vibration occurs, stop immediately.

SAVE THESE

INSTRUCTIONS.

FUNCTIONAL DESCRIPTION

Specications

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.

Unpacking

When unpacking, make sure the item

is intact and undamaged. If any parts

are missing or broken, call Harbor Freight

Tools at 1-800-444-3353.

• This air tool may be shipped with a

protective plug covering the air inlet.

Remove this plug before set up.

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 lter, 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

Rev 11b

SKU 66984 For technical questions, please call 1-800-444-3353. Page 7

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 efcient, 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 ow, and therefore tool

performance, can be hindered by

undersized air supply components.

3. The air hose must be long enough

to reach the work area with enough

extra length to allow free movement

while working.

4. Release the tool’s Trigger (39); refer

to Operation section for description of

controls.

5. Close the in-line safety valve between

the compressor and the tool.

6. Turn on air compressor according to

manufacturer’s directions and allow it

to build up pressure until it cycles off.

7. Adjust the air compressor’s output

regulator so that 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 set the right pressure range.

8. Inspect the air connections for leaks.

Repair any leaks found.

9. If the tool will not be used at this time,

release the Trigger, close the shut-

off valve, and detach it from the air

supply, safely discharge any residual

air pressure.

Note: Residual air pressure should not be

present after the tool is disconnected

from the air supply. However, it is a

good safety measure to attempt to

discharge the tool in a safe fashion

after disconnecting to ensure that the

tool is disconnected and unpowered.

SKU 66984 For technical questions, please call 1-800-444-3353. Page 8

Air Tool & Spray Gun Portable Setup

Description Function

A Air Hose Connects air to tool

B Filter Prevents dirt and condensation from damaging 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 life

G Air Cleaner / Dryer (optional) Prevents water vapor from damaging work piece

HAir Adjusting Valve (optional) For ne tuning airow at tool

E H

Non-lubricated

Tools

Lubricated

Tools

SKU 66984 For technical questions, please call 1-800-444-3353. Page 9

Air Tool & Spray Gun Stationary Setup

Description Function

AVibration Pads For noise and vibration reduction

B Anchor Bolts Secures air compressor in place

CBall Valve Isolates sections of system for maintenance

D Isolation Hose For vibration reduction

E Main Air Line - 3/4” minimum recommended Distributes air to branch lines

FBall 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 / Dryer (optional) Prevents water vapor from damaging work piece

J Regulator Adjusts air pressure to tool

K Lubricator For air tool lubrication

L Air Hose Connects air to tool

M Coupler and Plug Provides each connections

NAir Adjusting Valve For ne tuning airow at tool

O Leader Hose Increases coupler life

M N

Non-lubricated

Tools

Lubricated

Tools

JKL

Slope

B B

A A

SKU 66984 For technical questions, please call 1-800-444-3353. Page 10

OPERATING INSTRUCTIONS

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.

Inspect tool before use, looking

for damaged, loose, and

missing parts. If any problems

are found, do not use tool until

repaired.

Tool Set Up

TO PREVENT

SERIOUS INJURY

FROM ACCIDENTAL

OPERATION: Turn off the tool,

detach the air supply, safely

discharge any residual air

pressure in the tool, and

release the throttle and/or turn

the switch to its off position

before performing any

inspection, maintenance, or

cleaning procedures.

TO PREVENT SERIOUS

INJURY: Do not adjust or

tamper with any control or

component in a way not

specically explained within

manual. Improper adjustment

can result in tool failure or

other serious hazards.

Work Piece and Work Area Set Up

1. Designate a work area that is clean

and well-lit. The work area must not

allow access by children or pets to

prevent injury and distraction.

2. Route air hose along a safe route

to reach work area without creat-

ing 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 reach the work area with enough

extra length to allow free movement

while working.

4. There must not be hazardous objects

(such as utility lines) nearby that will

present a hazard while working.

General Operating Instructions

1. WARNING! Use only 3/4” Drive

Impact type sockets (not supplied).

2. If an automatic oiler is not used, add

a few drops of Pneumatic Tool Oil

to the airline connection before use.

Add a few drops more after each

hour of continual use.

3. Push and snap socket (not included)

onto Anvil (8). See Assembly

Diagram on page 12.

4. This Wrench can be used in

either Forward or Reverse

direction. To operate in Forward,

turn the Regulator Knob (33)

counterclockwise or to the right.

NOTE: There are three torque

settings for the Forward direction.

5. For Reverse, turn the Regulator Knob

to clockwise or to the left. NOTE:

There are three torque settings for

the Reverse direction.

6. To tighten, place the socket over the

hex nut you wish to tighten.

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