Page 1
Owner's Manual
Pneumatic 3/8" Drive
RATCHET C
Model No.
875.199320
WARNING:
Before operating tool, read this
manual and follow all
Safety Recommendations and
Operating Instructions.
Safety
Warranty
Features & Operation
Maintenance
EspaSol
Distributed by Sears, Roebuck and Co., Hoffrnan Estates, IL 60179
www=Sears.corn
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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. Ifyou 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: THEAIR SUPPLY SHOULD BE CLEAN, DRYAND
PREFERABLY LUBRICATED. FOR BEST RESULTS
DRAIN THE MOISTURE FROM YOUR COMPRESSOR
DAILY.
Use Only Power Sockets & Accessories
Sockets and accessories used shall be of the power
socket type. Always check sockets, retainers and
drives regularly for wear or damage and replace when
necessary.
[, WARNINGJ
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 ONE YEAR WARRANTY ON
CRAFTSMAN AIR-DRIVE TOOLS
If this Craftsman tool fails to give complete satisfaction
within one year from the date of purchase, RETURN IT
TO THE NEAREST SEARS STORE IN THE UNITED
STATES, and Sears will repair or replace 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.
Distributed by Sears, Roebuck and Co., Dept. 817WA,
Hoffman Estates, IL 60179.
The Craftsman Model 875.199320 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
Drive size............................................................................... 3/8"
Free speed (No Load) .............................................. 180 RPM
Ultimate torque ......................................................... 45 ft. Ibs.
Weight ............................................................................. 2 YzIbs.
Overall length......................................................................... 10"
Average air consumption .......................................... 5.5 SCFM
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 accidently
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)
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., 3t
Branch ne = 2 t mes Sto Filter ivlam me = imes
]--I" Tool inlet/hose size Iii valPe Regulator Tool inlet/hose size
II II _ stop
H Auto Drain _ _ Valve
I_U 'A:lve _ Air Cornpressor
'_' " Figure I _ -_
Air Hose Hook Up q\\\\X\\\\\\_\\
WARNING: DISCONNECT TOOL FROM AiR SUPPLY
BEFORE SERVICING OR CHANGING SOCKETS. This
ratchet is equipped with a lever throttle which ailows the
operator to vary the speed. Direction control is located on
the back of the ratchet head. Initial tightening and loosen-
ing of fasteners should be done manually with ratchet
used as a hand tool. Fasteners may then be run on and
off with relative ease.
Keep socket firmly against work surface when running the
ratchet to avoid dislodging the socket from the anvil.
Excessive torque leverage above tooI specifications will
result in premature gear wear.
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. The tool should be run for approximately 30
seconds to ensure oil has been evenly distributed through
out the tool. The tooI should be stored in a clean and dry
enviroment
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.
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Sears CRAFTSMAN Model 875.199320
Pneumatic 38" Drive Ratchet Wrench
Exploded View and Parts List
Ref. Part No. Description
1 9106459 Housing
2 9106460 Air Inlet Bushing
3 9106461 Throttle Lever
4 9106462 Dowel Pin
5 9106463 O-Ring
6 9106464 Valve Stem
7 9106465 Valve Spring
8 9106466 O-Ring
9 9106467 Valve Plug
10 9106468 Muffler Cover
11 9106469 Ball Bearing
12 9106470 Rear End Plate
13 9106471 Rotor Blade
14 9106472 Rotor
15 9106473 Set Pin
16 9106474 Cylinder
17 9106475 Washer
18 9106476 Front End Plate
19 9106477 Bearing
20 9106478 Washer
21 9106479 Gear Ring
22 9106480 Idler Gear
O'ty
1
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1
1
1
1
1
3
Ref. Part No. Description
23 9106481 Gear Pin
24 9106482 Gear Cage
25 9106483 Clamp Nut
26 9106484 Bushing
27 9106485 Needle Bearing
28 9106486 Crank Shaft
29 9106487 Ratchet Housing
30 9106488 Drive Bushing
31 9106489 Ratchet Yoke
32 9106490 Locking Pin
33 9106491 Spring
34 9106492 Reverse Switch
35 9106493 Washer
36 9106494 Ratchet Pawl
37 9106495 Anvil Cage
38 9106496 Spring
39 9106497 Steel Ball
40 9106498 Set Pin
41 9106499 Thrust Washer
42 9106500 Retainer Ring
43 9106501 Handle Grip
44 9106502 Ratchet Cover
(4)
Q'ty
3
1
1
1
1
1
1
1
1
2
2
1
1
2
1
2
2
2
1
1
1
1
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Troubles ooting
Tool runs slowly or will not operate 1. rit or gum in tool
2. No oil in tooI
3. Low air pressure
4. Air hose leaks
5. Pressure drops
• Worn rotor blade in motor
7. Worn ball bearing in motor
Moisture blowing out of tool exahust 1. Water in tank 1. Drain tank. (See air compressor manual)• Oil tool
1. Flush the tool with air tool oil or gum
solvent•
2. Lubricate the tool according to the lubrication
instructions in this manuai
3. a. Adjust the regulator on the tool to the maxi
mum setting
b. Adjust the compressor regulator to tool
maximum of 90 psi.
4. Tighten and seal hose fittings if leaks are found
use teflon tape.
5. a. Be sure the hose is the proper size. Long
hoses or tools using large volumes of air may
require a hose with an I.D. of 1/2" or larger
depending on the total length of the hose
b. Do not use a multiple number of hoses
connected together with quick connect fittings•
This causes additional pressure drops and
reduces the tool power• Directly connect the
hoses together
•Replace rotor blade
7. Remove and inspect bearing for rust, dirt and
grit. Replace or clean and grease bearing with
bearing grease
and run until no water is evident• Oil tool again and
run 1 2 seconds
Impacts slowly or will not impact 1. Lack of lubrication 1. Lubricate the air motor and the impact mechanism•
(See Lubrication section of this manual)
2. Tool regulator set in wrong
position
3. In line regulator or
compressor regulator
set too low
Impacts rapidly but
will not remove bolts
Does not impact 1. Broken impact mechanism 1. Replace broken impact mechanism components
1. Worn impact mechanism 1. Replace worn impact mechanism components
2. Adjust the regulator on the tool to the maximum
setting
3. Adjust regulators in the air system
(5)
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For the repair or replacement
parts you need delivered directly to your home
Call 7 am - 7 pm, 7 days a week
1-800-366-PART
(1-800-366-7278)
Para ordenar piezas con entrega
a domicilio - 1-800-659-7084
For the location of a
Sears Parts and Repair Center
in your area
Call 24 hours a day, 7 days a week
1-800-488-1222
For more information on
purchasing a Sears
Maintenance Agreement or to inquire
about an existing Agreement
Call 9 am - 5 pm, Monday-Saturday
1-800-827-6655
The model number of your air tool is located
on the serial plate attached to the tool.
When requesting service or ordering parts,
always give the following information:
SE/ARS
• Product Type
• Model Number
• Pneumatic Tool
• Part Description
Distributed by Sears, Roebuck and Co., Hoffman Estates, IL 60179 USA
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