Craftsman RATCHET WRENCH 875.19934 User's Manual
Contents
1. Lead from lead based paint crystalline silica from bricks and cement and other masonry products 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 particles ENG 3 Owner s Manual Model No 875 199340 Disconnect the air tool from air supply before changing tools or attachments servicing and during non operation Do not wear loose fitting clothing scarves or neck ties in work area Loose clothing may become caught in moving parts and result in serious personal injury Do not wear jewelry when operating any tool Jewelry may become caught in moving parts and resuit in serious personal injury Do not depress trigger when connecting the air supply hose Never trigger the tool when not applied to a work object Attachments must be securely attached Loose attachments can cause serious injury Protect air lines from damage or puncture Never point an air tool at oneself or any other person Serious injury could occur Check air hoses for weak or worn conditions before each use Make sure all connections are secure Release all pressure from the system before attempting to install service relocate or perform any maintenance2. Keep all nuts bolts and screws tight and ensure equipment is in safe working condition ENG 4 Use attachments designed for use with air powered tool Always examine accessories before mounting for chips cracks or signs of damage Never use mounted points or other accessories that have been dropped or exposed to water solvent or extreme temperature changes It is a good practice to operate the tool in a protected enclosure for one minute after mounting any accessory Always use accessories with an RPM rating that meets or exceeds the tool RPM rating Never carry a tool by the hose or pull the hose to move the tool or a compressor Keep hoses away from heat oil and sharp edges Replace any hose that is damaged weak or worn inhalation hazard Abrasive tools such as grinders sanders and cut off tools generate dust and abrasive materiais which can be harmful to human lungs and respiratory system Always wear MSHA NIOSH approved properly fitting face mask or respirator when using such tools Owner s Manual Model No 875 199340 Some materials such as adhesives and tar contain chemicals whose vapors could cause serious injury with prolonged exposure Always work ina clean dry well ventilated area Tools which contain moving elements or drive other moving tools such as grinding wheels sockets sanding discs etc can become entangled in hair clothing jewelry and other loose object
3. ie a E neni 3 8 Free speed No Load 180 RPM Max Torque naani 70 ft ibs NV GIO AE Salen dhe deiten tala aienisnannes 2 6 lbs Overall length 0000 ee 10 1 8 Average air consumption 4 5 CFM Recommended hose size 3 8 1 D PIE MCE E E EE 1 4 NPT Maximum Air Pressure 90 PSI ENG 2 The Craftsman Model 875 199340 3 8 in ONE YEAR FULL WARRANTY ON CRAFTSMAN PROFESSIONAL TOOL lf this Craftsman tool fails to give complete satisfaction within one year from the date of purchase RETURN IT TO ANY SEARS STORE OR PARTS amp REPAIR CENTER OR OTHER CRAFTSMAN OUTLET IN TRE UNITED STATES FOR FREE REPAIR or replacement if repair proves impossible This warranty does not include expendable parts such as lamps batteries bits or blades This warranty gives you specific legal rights and you may also have other rights which vary from state to state Sears Roebuck and Co Hoffman Estates IL 60179 Min Compressor Requirem Light Use 17 Gallon Typical Use 26 Gallon Heavy Use 33 Gallon Professional Owner s Manual Model No 875 199340 Important Safety Instructions 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 287 1 Occupational and
4. 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 Air Hoses for your Air Tools Figure 1 illustrates a recommended air hose hook up A 3 8 inch ID air hose is required up to a length of 25 feet A 3 8 inch ID hose longer than 25 feet will cause a pressure drop and may impede performance If more length is required a inch ID air hose is recommended Be sure all hoses and fittings are the correct size and correctly secured before using the tool ENG 6 Model No 875 199340 Air Tool Hoo Never carry a tool by the hose or pull the hose to move the tool or a compressor Keep hoses away from heat oil and sharp edges Replace any hose that is damaged weak or worn Small home shop hard piping A piping diagram for a typical home shop is shown Some helpful tips are Always use hoses and pipes rated for higher pressure than your system will encounter Never use PVC pipes for compressed air piping systems as explosion and serious injury may result The connection from the compressor to the initial take off hard pipe must Owner s Manual Model No 875 199340 be a flexible hose in order to isolate movement of the compressor e Route the initial take off line pipe as straight up the shop wall and as high as possible This will help minimize water leaving the compressor and traveling th
5. Educational Eye and Face Protection Look for marking 287 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 California Prop 65 Some dust created by power sanding sawing grinding drilling and other construction activities contains chemicals known to cause cancer birth defects or other reproductive harm Some examples of these chemicals are
6. RA FTS MA N Owner s Manual Model No 875 199340 3 8 in Ratchet Wrench Unpacking When unpacking this product carefully inspect for any damage that may have occurred during transit Make sure any loose fittings bolts etc are tightened before putting this product into service WARNING Please read and save these safety and operating instructions Read carefully before attempting to assemble install operate or maintain the product described Protect yourself and others by observing all safety information Failure to comply with instructions could result in personal injury and or property damage Retain instructions for future reference Sears Roebuck and Co Hoffman Estates IL 60179 0807 www CRAFTSMAN com Owner s Manual Model No 875 199340 Table of Contents Features amp Benefits Specifications Product Warranty Compressor Requirements Important Safety Instructions Installation and Operation Maintenance Exploded View Drawing amp Parts List Troubleshooting e amp Drive ratchet wrench is designed for applications such as automotive repair general assembly transmission teardown and maintenance Features a unique variable speed throttle that allows precise control of the speed and power of the tool Insulated soft touch grip for maximum comfort Extra heavy duty ratchet head designed for the true professional _ Specifications EDEN SIZE isl oat
7. ol slow or will not operate 2 No oil in tool 3 Low air pressure 4 Air hose leaks 5 Pressure drops Moisture blowing out of tool 1 Water in tank 2 Water in the air lines hoses ENG 10 Troubleshooting _ 1 Flush the tool with air tool oil gum solvent or an equal mixture of SAE 10 motor oil and kerosene Lubricate the tool after cleaning 2 Lubricate the tool according to the lubrication instructions in this manual 3a Adjust the regulator on the tool to the maximum setting if applicable 3b Adjust the compressor regulator to tool maximum while the tool is running free 4 Tighten and seal hose fittings if leaks are found 5a Be sure the hose is the proper size Long hoses or tools using large volumes of air may require a hose with an D of 1 2 or larger depending on the total length of the hose 5b Do not use 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 1 Drain tank See air compressor manual Oil tool and run until no water is evident Oil tool again and run 1 2 seconds 2a Install a water separator filter NOTE Separators only work properly when the air passing through the separator is cool Locate the separator filter as far as possible from the compressor 2b install an air dryer 2c Anytime water enters the tool the tool sho
8. rough system Slope the main lines down at least 3 4 inch per 10 feet of pipe away from air compressor this will draw the condensate with the flow of air and away from the compressor Place the first drop as far from the compressor as the size of your shop will allow 50 feet is optimal although unrealistic for a small shop The further the drop the more that condensation can occur and the drier the air will be when it reaches the water separator In order to reduce the amount of water and contaminants that get into the water separator install the take off line on the top of the main air supply line for each air drop ADrain line should be placed at the end of the main line for condensate drainage Drain valves should be placed at the end of branch lines and the drain line and drained daily The Craftsman 3 8 Drive Ratchet Wrench is designed to operate on 90 PSIG Lower pressure below 90 PSI will reduce performance of the tool while higher air pressure over 90 PSI raises the performance of the tool beyond its rated capacity and could cause serious damage to tool and user Speed Adjustment The ratchet should never be used to set the torque Use a torque wrench to set the torque POON SOILS RMSE SLUR ESEEIRNASIELS BIEBER eT RR hen tigh tening do not torque down the nuts or bolts with the ratchet as typically done with a hand wrench This can damage the tool by breaking parts in the ratche
9. s resulting in severe injury Never wear loose fitting apparel which contains loose straps or ties that could become tangled in moving parts of the tool Remove any jewelry watches etc which might become caught by the tool Keep hands away from moving parts Tie up or cover long hair improperly maintained tools and accessories can cause serious injury Maintain the tool with care A properly maintained tool with sharp cutting edges reduces the risk of binding and is easier to control There is a risk of bursting if the tool is damaged 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 Tools which cut shear drill staple punch chisel etc are capable of causing serious injury Keep the working part of the tool away from hands and body will discharge through the exhaust port during the first few seconds of operation Thus the exhaust port must be covered with a towel before applying air pressure Always make sure that tool accessories meet or exceed the tools reccomended output Disconnect tool from air supply before servicing or changing sockets the nuts or bolts with the ratchet as typically done with a hand wrench This can damage the tool by breaking parts in the ratchet mechanism ENG 5 Owner s Manual _Pre Operation I Installation Before
10. t mechanism ENG 7 Owner s Manual Maintenance Model No 875 199340 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 Figure 3 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 or any other high grade turbine oil containing moisture absorbent rust inhibitors metal wetting agents and an EP extreme pressure additive See Figure 3 for location air inlet Lubricate air motor here ENG 8 Figure 3 Owner s Manual Model No 875 199340 Exploded View Drawing 39 Parts List ENG 9 Owner s Manual Model No 875 199340 Tool runs 1 Grit or gum in to
11. uld be oiled immediately Owner s Manual Model No 875 199340 Troubleshooting 1a Clean mechanism with air tool oil 1b Replace worn mechanism Ratchet mechanism is dirty Ratchet mechanism slips or will not loosen Notes ENG 11
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