Craftsman 875.191170 User Manual

Owner's Manual

Pneumatic 3/8" Drive

RATCHET WRENCH

Model No.

875.191170

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

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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 PSiG Maximum

This tool is designed to operate at an air pressure of 90
pounds per square inch gauge pressure (90 PSIG)
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
DAIL_

Use Only Impact Sockets & Accessories
Sockets and accessories used shall be of the impact
socket type. Always check sockets, retainers and drives

regularly for wear or damage and replace when
necessary.

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 Companion Model 875.191170 3/8" Drive
Ratchet Wrench is designed for applications such as

automotive repair, general assembly, transmission
teardown and maintenance. Features include a lever

throttle for speed control and low profile head for work in
close quarters.

Features

Lever throttle for ease of operation.

1-1/8" Ratchet head height (without socket) for use in
close-quarter applications.
Front exhaust directs air away from operator.

Specifications

Maximum Torque ......................................... 45 ft.-Ibs.

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

Maximum operating pressure .......................... 90 PSI

Free speed .................................................. 160 RPM

Air consumption .............................................. 4 CFM

Drive size ............................................................. 3/8"

Overall length ........................................................ 10"

Weight ........................................................... 2½ Ibs.

Hose Size ............................................................ 3/8"

[ 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.

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 5-19 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 accidenfiy

engaged.

Installation (See figure 1)

This tool is designed to operate at 99 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

hose 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)

More than 1/100 slope

JI

Stop

Valve Lubricator

olinlet_ose_

AutoDrain

Iianch line=2times

VaIve

toDrain

lye

This ratchet is equipped with a lever throttle which
allows the operator to vary the speed.

Initial tightening and loosening of fasteners should be
done manually with the ratchet being used as a hand

tool. Fasteners maythen be run on and off with
relative ease.

During use keep socket firmly against work surface to
avoid dislodging the socket from the anvil. Direction

control is located on the back of the ratchet head
(Fig 2).

Figure 1 *Air Hose Hook Up

Filter

Air Tool

Lubrication

An in-line fitter-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 toot 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.

Main line = 3 times

Tool inlet/hose size

Stop
Valve!

I ICAUTiONI

Excessive torque leverageabove tool specifications
will result inpremature gear wear.

1t_7I;<Ii!7

Figure2 - ToolDiagram

IAiWARNING]

Disconnect tool from air supply before servicing
or changing sockets.

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 2). The tool should

be run for approximately 30 seconds to ensure oil has

been evenly distributed throughout the tool. The tool
should be stored in a clean and dry environment.

Recommended lubricants: Use air tool oil orany
other high grade turbine oil containing moisture
absorbent, rust inhibitors, metal wetting agents and an

EP (extreme pressure) additive. (See Fig. 2for

location/air inlet).

(3)