Craftsman 875191180 Owner’s Manual

Owner's Manual

Pneumatic 1/2" Drive

IMPACT WRENCH

Model No.

875.191180

WARNING:

Before operating tool, read this
manual and follow all

Safety Recommendations and
Operating Instructions.

• Safety

• Warranty

• Features &Operation

• Maintenance

• EspaSol

Sears, Roebuck and Co., Hoffman Estates, IL 60179 USA

www.Sears.com

Read Operating Instructions

Please become familiar with all the instructions and
warnings before operating any pneumatic tool.

Always Wear Approved Eye Protection
Impact resistant eye protection should meet or exceed

the standards set forth in ANSI Z87.1, Occupational and
Educational Eye and Face Protection. Look for marking
Z87.1 on your eye protection to ensure that it is an
approved style.

Hearing Protection is Recommended
Hearing protection should be used when the noise level
exposure equals or exceeds an 8 hour time-weighted
average sound level of 85dBA. Process noise, reflective
surfaces, other tools being operated nearby, all add to the

noise level in a given work area. If you are unable to
determine your noise level exposure, we recommend the
use of hearing protection.
Avoid Prolonged Exposure to Vibration
Pneumatic tools can vibrate during use. Prolonged

exposure to vibration or very repetitive hand and arm
movements can cause injury. Discontinue the use of any
tool if you experience tingling, numbness, discomfort or
pain in your hands or arms. You should consult your
physician before resuming use of tool.

90 PSI Maximum
This tool is designed to operate at an air pressure of 90

pounds per square inch gauge pressure (90 PSI)
maximum, at the tool. Use of higher air pressure can, and
may cause injury. Also, the use of higher air pressure

places the internal components under loads and
stresses they were not designed for, causing premature

tool failure.
NOTE: THE AIR SUPPLY SHOULD BE CLEAN, DRY AND

PREFERABLY LUBRICATED. FOR BEST RESULTS
DRAIN THE MOISTURE FROM YOUR COMPRESSOR
DAILY

Use Only Impact Sockets & Accessories
Only use sockets designated "FOR USE WITH IMPACT

WRENCHES," Hand tool sockets can break, creating a
hazard from flying pieces, Always check sockets,

retainers and drives regularly for wear or damage and
replace when necessary,

[ WARNINGI

Some dust created by power sanding, sawing, grinding,
drilling and other construction activities contains chemi-

cals known to cause cancer, birth defects or other
reproductive harm. Some examples of these chemicals

are:

Lead from lead based paint
crystalline silica from bricks and cement

and other masonry products, and
arsenic and chromium from chemically-
treated lumber.

Your risk from those exposures varies, depending on how
often you do this type of work. To reduce your exposure to

these chemicals: work in a well ventilated area, and work
with approved safety equipment, such as dust masks that
are specifically designed to filter out microscopic par-

ticles.

FULL TWO YEAR WARRANTY ON

CRAFTSMAN AIR-DRIVE TOOLS

If this Craftsman tool fails to give complete satisfaction

within two years from the date of purchase, RETURN IT
TO THE NEAREST SEARS STORE IN THE UNITED

STATES, and Sears will repair it free of charge. If this
Craftsman tool is used for commercial or rental

purposes, this warranty applies for only 90 days from the

date of purchase. This warranty gives you specific legal

rights, and you may also have other rights which vary

from state to state.

Sears, Roebuck and Co. Dept. 817WA, Hoffman
Estates, IL 60179.

The Craftsman Model 875.1911801/2" Square Drive
Impact Wrench is ideal for general assembly,
automotive, agricultural and industrial applications.

Features

Built-in regulator for power output adjustment.
Pin type clutch for increased power output.
Ring-type socket retainer allows quick socket
changes.

Specifications

Drive size ............................................................................... 1/2"

Impacts per minute .................................................. 1,300 IPM

Free speed (No Load) ........................................... 7 000 RPM

Ultimate torque ....................................................... 230ff. Ibs.

Weight ............................................................................. 4½ Ibs.

Overall length ....................................................................... 7Y2"

Average air consumption .............................................. 5 CFM

Recommended hose size ........................................... 3/8" I.D.

Air inlet.......................................................................... 1/4"NPT

Maximum Air Pressure .................................................. 90 PSi

Pre-Operation

Before the tool is connected to the air supply, clear the air
hose of accumulated dust and moisture by running air

freely through the air hose for 5-10 seconds, Before
removing a tool for service or changing sockets, make

sure the air line is shut-off at the compressor, This will
prevent the tool from operating if the throttle is accidenBy
engaged.

Installation (See figure 1)

This tool is designed to operate at 90 psi, Lower pres-

sure (below 90 psi) will reduce performance of the tool

while higher air pressure (over 90 psi) raises the perfor-

mance of the tool beyond its rated capacity and could

cause serious damage to tool and user.

Always use clean dry air. Excessive moisture and dirt will

greatly reduce the life of any air motor. We recommend

the installation of an in-line filter-regulator-lubricator as

close to the tool as possible.

A 3/8" air hose is required up to a length of 8 ft. If more

length is required a 1/2" air hose should be used at the

compressor. Attach a 3/8" whip hose for the remaining

4 - 8 ft. for flexibility. Be sure all hoses and fittings are the

correct size and tightly secured before using air tool.

(2)

Morethan11100slope

_- 4.,_-_ : ', M" I" 3t" l_--

Branchline=2times II stop Filter a,n. ,ne = ,r_es

]-[ Tool inlet/hose size H Valve Regulator Tool inlet/hose stze

/

II II /1" stopt

el A tOv :: W, e-

AirTool

)Auto Drain

_ _vAalve

"=" Figure I - Air Hose Hook Up

This tools power output may be adjusted by rotating the
regulator valve (fig. 2) until desired output is achieved.
The settings on the regulator are only for reference only

and do not denote a specific power output. Turn clock-
wise to zero for less power and counterclockwise to four

for maximum power. Push reverse pin towards the rear of

tool for reverse and towards the front of the tool for

forward (fig 3). Power is regulated in both forward and

reverse direction.

_._ approximately 30 seconds to ensure oil has been evenly

_4 _> in a clean and dry environment.

Figure 2

Regulator Valve

Figure 3

Tool Diagram

[ i,WARNINGI

Once a bolt or fastener is seated, impacting for longer
than five (5) seconds will cause excessive wear and

possible damage to the impacting Mechanism. If it
takes longer than five seconds to tighten or loosen your
bolt or fastener, we recommend the use of a larger size
impact wrench.

Lubrication

An in-line filter-regulator-lubricator (fig 1) is recommended
as it increases tool life and keeps the tool in sustained
operation. The in-line lubricator should be regularly

checked and filled with air tool oil. Proper adjustment of
the in-line lubricator is performed by placing a sheet of
paper next to the tools exhaust ports and holding the
throttle open approximately 30 seconds. The lubricator is
properly set when a light stain of oil collects on the paper.

Excessive amounts of oil should be avoided.

In the event that it becomes necessary to store the tool for
an extended period of time (overnight, weekend, etc.), it
should receive a generous amount of lubrication through

the air inlet (fig 3). The tool should be run for

_ distributed throughout the tool. The tool should be stored

Recommended lubricants: Use air tool oil or any other
high grade turbine oil containing moisture absorbent, rust
inhibitors, metal wetting agents and an EP (extreme
pressure) additive. (See Fig. 3 for Iooation/air inlet).

Impact clutch lubrication: The tool reservoir in the anvil
housing should be checked every 40 hours of operation.
Remove the oil plug From the housing and hold tool so
the oil port is lower than the anvil housing. Drain oil.
Measure and refill with approximately 1oz. (30 ml) of SAE

30 weight oil. Never overfill the anvil mechanism or
excessive pressure will be created reducing tool speed
and power, if the tool becomes sluggish after adding oil,
remove a small amount of oil and check performance
again. (Fig 3 Oil Port Hole)