SEARS 175260 One Stage Air Compressor Owner’s Manual
- June 16, 2024
- Sears
Table of Contents
- SEARS 175260 One-Stage Air Compressor
- Product Information
- Product Usage Instructions
- SAFETY GUIDELINES
- SPECIFICATION CHART
- GLOSSARY
- ACCESSORIES FOR USE WITH SEARS AIR COMPRESSORS
- GENERAL INFORMATION
- DESCRIPTION OF OPERATION
- INSTALLATION AND BREAK-IN PROCEDURES
- Wiring Instructions
- OPERATING PROCEDURES
- MAINTENANCE
- TROUBLESHOOTING GUIDE
- AIR COMPRESSOR DIAGRAM
- PARTS LIST
- COMPRESSOR PUMP DIAGRAM
- ONE YEAR WARRANTY
- ASSEMBLY OPERATION
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
SEARS 175260 One-Stage Air Compressor
Product Information
- Specifications
- Model: [insert model name]
- Dimensions: [insert dimensions]
- Weight: [insert weight]
- Color: [insert color]
- Power Source: [insert power source]
- Warranty: [insert warranty details]
- Description
- The [insert product name] is a versatile and user-friendly device designed to [describe the main purpose and functionality of the product].
- It is suitable for [mention target users or specific applications].
- With its [highlight key features or unique selling points], this product offers an efficient solution for [specific use cases or problems it solves].
- Key Features
- [Feature 1]: [Description of feature 1]
- [Feature 2]: [Description of feature 2]
- [Feature 3]: [Description of feature 3]
- [Feature 4]: [Description of feature 4]
- Included Components
- [Component 1]
- [Component 2]
- [Component 3]
- Safety Precautions
- Before using the [insert product name], please read and understand the following safety precautions:
- [Safety precaution 1]: [Description of safety precaution 1]
- [Safety precaution 2]: [Description of safety precaution 2]
- [Safety precaution 3]: [Description of safety precaution 3]
Product Usage Instructions
- Step 1: Unpacking and Assembly
- Carefully unpack the [insert product name] and ensure all components are included.
- Follow the assembly instructions provided in the user manual to assemble the product correctly.
- Make sure all connections are secure and tighten any loose parts.
- Step 2: Powering On
- Connect the power source (e.g., plug into a power outlet or insert batteries) as specified in the user manual.
- Press the power button to turn on the [insert product name].
- Wait for the device to initialize and be ready for operation.
- Step 3: Basic Operation
- Familiarize yourself with the control panel and buttons of the [insert product name].
- Refer to the user manual for specific functions and their corresponding button controls.
- Use the appropriate buttons or controls to navigate menus, adjust settings, or perform desired actions.
- Step 4: Maintenance and Cleaning
- Regularly clean the [insert product name] using a soft cloth and mild cleaning solution.
- Avoid using abrasive materials or solvents that may damage the device’s surface.
- Refer to the user manual for specific maintenance instructions, such as replacing filters or lubricating moving parts.
- Step 5: Troubleshooting
- If you encounter any issues with the [insert product name], refer to the troubleshooting section of the user manual.
- Follow the provided steps to diagnose and resolve common problems. If the issue persists, contact our customer support for further assistance.
- Step 6: Storage
- When not in use, store the [insert product name] in a cool, dry place away from direct sunlight. Ensure it is properly protected to prevent any damage.
- Step 7: Disposal
- Dispose of the [insert product name] according to local regulations. Do not dispose of it with regular household waste.
- Frequently Asked Questions (FAQ)
- Q: How do I clean the [insert product name]?
- A: To clean the [insert product name], use a soft cloth and mild cleaning solution. Avoid abrasive materials or solvents that may damage the device’s surface. Refer to the user manual for detailed cleaning instructions.
- Q: Can I use the [insert product name] outdoors?
- A: The [insert product name] is designed for indoor use only. It is not recommended for outdoor use as it may not be resistant to environmental elements.
- Q: How often should I replace the filters?
- A: The frequency of filter replacement depends on various factors such as usage time and environmental conditions. Refer to the user manual for specific guidelines on when and how to replace the filters.
- Q: Is the [insert product name] compatible with other devices?
- A: The compatibility of the [insert product name] with other devices depends on its specifications and available connectivity options. Refer to the user manual or product documentation for information on compatibility with specific devices or protocols.
SAFETY GUIDELINES
This manual contains information that is important for you to know and understand. This information relates to protecting your safety and preventing equipment problems. To help you recognize this information, we use the following symbols. Please read the manual and pay special attention to sections headed by these symbols.
WARNING
- IMPORTANT SAFETY INFORMATION – A HAZARD THAT MIGHT CAUSE SERIOUS INJURY OR LOSS OF LIFE.
CAUTION
- Information for preventing damage to equipment.
NOTE
- Information that you should pay special attention to.
WARNING
- HAZARDS CAN OCCUR IF EQUIPMENT IS NOT USED PROPERLY.
- PLEASE READ THE FOLLOWING CHART.
WHAT TO LOOK FOR | WHAT COULD HAPPEN | HOW TO PREVENT IT |
---|---|---|
Hot Parts | The compressor head and tubes get hot when the air compressor is | |
running. If you touch them, you can be seriously burned. | Never touch the air |
compressor head or tubes during or immediately after operation.
Flammable Vapors| It is normal for the motor’s electrical contacts and
pressure switch contacts to spark when the compressor starts or stops. A
spark can ignite flammable vapors from gasoline, flammable paints, or
solvents, causing an explosion or fire.| Operate the compressor in well-
ventilated areas that are free of gasoline, flammable paint, or solvent
vapors.
If spraying a flammable material – provide ample ventilation. Never spray in a closed area. There must be a flow of fresh air at all times.
| | Do not operate the compressor in the spray area.
Unsuitable Solvents| The solvents 1, 1, 1-Trichlorethane, and Methylene
Chloride can chemically react with aluminum used in paint spray guns, paint
pumps, etc., and cause an explosion. These solvents can also react with
galvanized components and cause corrosion and weakening of parts. This does
not affect your air compressor – but it may affect the equipment being used.|
If the material you intend to spray contains the solvents listed at left (read
the label or datasheet), do not use accessories that contain aluminum or
galvanized parts. You must either change the material you intend to spray or
use only stainless steel spray equipment.
Compressed Air| Compressed air can propel dust, dirt, or loose particles
it comes in contact with.
Too much air pressure applied to air tools or accessories can cause damage or risk of bursting.
| Never point any nozzle or sprayer toward a person or any part of the body.
Always wear safety goggles or glasses when using the air compressor.
Always turn the air compressor off and release air pressure from the hose before attaching or removing accessories.
Check the manufacturer’s maximum pressure rating for tools and accessories. The regulator outlet pressure must never exceed the maximum pressure rating.
WHAT TO LOOK FOR | WHAT COULD HAPPEN | HOW TO PREVENT IT |
---|---|---|
Electricity | Your air compressor is powered by electricity. Like any other |
electrically powered device, if it is not used properly it can cause electrical shock.| Always turn off and lock out electrical power before maintenance or repair.
Wiring of the pressure switch, motor, and On/ Off switch should be done by a licensed elec patrician by national and local codes.
Moving Parts| This compressor cycles automatically when the switch is in the “On-Auto” position. If you attempt repair or maintenance while the com-
pressor is operating, or with the switch in the “On-Auto” position you can expose yourself to moving parts. These moving parts can cause serious injury or damage if they come into contact with you or your clothing.
| Always turn off and lock out power before repair or maintenance.
Never operate the compressor with the belt guard removed.
Toxic Vapors| It is normal for compressed air to contain toxic or irritating vapors. Such vapors are harmful if inhaled. Certain materials you are spraying (like paint, weed killer, sand, or insecticide) can be harmful if you inhale them.| Never directly inhale the compressed air pro reduced by this unit.
Read labels and safety data for all materials you spray. Follow all safety precautions.
Use a mask or respirator if there is a chance of inhaling toxic sprayed materials. Masks and respirators have limits and will only protect against some kinds and limited amounts of toxic material. Read mask and respirator instructions carefully. Consult with a safety expert or industrial hygienist if you are not sure about the use of a certain mask or respirator.
Air Tank| Modifications to the air compressor can cause the air tank to
rupture or explode.| Do not adjust, remove, or tamper with the safety valve or
pressure switch. If a safety valve or pressure switch replacement is
necessary, a part with the same pressure rating must be used.
| | Never use a motor with a higher horsepower rating than the one supplied.
| | Do not substitute a gas engine for the motor…this compressor was not
designed to be powered by a gasoline engine.
| | Never replace the compressor pump with a different model.
| | Never increase the compressor pump speed.
| Changing the air tank will cause it to weaken. The tank can rupture or
explode.| Never drill into, weld, or in any way modify the air tank. Do not
repair a leaking tank; it must be replaced.
| | Never replace the air tank with a different model or a larger tank.
Vibration| If your compressor is not properly anchored it will vibrate.
Excessive vibration can cause tank rupture or explosion.| Make sure your air
compressor is bolted to the floor. See “Location of the Air
Compressor” in this manual.
SPECIFICATION CHART
A circuit breaker is preferred. Use only a fuse or circuit breaker that has the same rating as the branch circuit where the air compressor is operated.
GLOSSARY
- CFM: Cubic feet per minute.
- SCFM: Standard cubic feet per minute; a unit of measure of air delivery.
- PSIG: Pounds per square inch gauge; a unit of measure of pressure.
- ASME: American Society of Mechanical Engineers; made, tested, inspected, and registered to meet the standards of the ASME.
- UL Listed: Underwriters Laboratories; samples of compressor outfits taken from production were submitted to UL and found to comply with their requirements for design and performance.
- Cut-Out Pressure: When you turn on your air compressor and it begins to run, air pressure in the air tank begins to build. It builds to a certain high pressure before the motor automatically shuts off – protecting your air tank from pressure higher than its capacity. The high pressure at which the motor shuts off is called “cut-out pressure.”
- Cut-In Pressure: While the motor is off, air tank pressure drops as you continue to use your accessory. When the tank pressure drops to a certain low level the motor will re-start automatically. The low pressure at which the motor automatically re-starts is called “cut-in pressure.”
- To Lock-Out Power: Place a lock on the line power switch so no one else can turn on the power.
ACCESSORIES FOR USE WITH SEARS AIR COMPRESSORS
The following accessories are available through the current general sales catalog or at full-line Sears stores.
- SPRAY GUNS
- BLOWGUNS
- AIR CAULKING GUNS
- AIR POWERED WASHER GUNS
- SANDBLASTERS
- AIRBRUSHES
- AIR LINE FILTERS
- TIRE AIR CHUCKS
- PAINT TANKS
- AIR TANKS
- INFLATOR KITS
- QUICK CONNECTOR SETS (various sizes)
- VISCOSIMETER
- AIR PRESSURE REGULATORS
- OIL FOG LUBRICATORS
- AIR TOOLS
- Sanders
- Drills
- Impact Wrenches
- Hammers
- AIR HOSE:
- 1/4″, 5/16″ OR 3/8″ I.D.
- in various lengths
GENERAL INFORMATION
- You have purchased an air compressor unit consisting of a 2-cylinder, single-stage air compressor pump, an ASME air tank, associated controls, and instruments.
- This air compressor must be permanently mounted in place.
- Your air compressor can be used for operating paint spray guns, air tools, caulking guns, grease guns, airbrushes, sandblasters, inflating tires, plastic toys, spraying weed killers, insecticides, etc.
- An air pressure regulator is usually necessary for most of these applications.
- Regulators can be purchased from most Sears stores or through the Sears General Catalog or Power Tool Catalog.
- Separate air transformers that combine the functions of air regulation and/or moisture and dirt removal should be used where applicable.
DESCRIPTION OF OPERATION
- Air Compressor Pump: To compress air, the pistons move up and down in the cylinders. On the downstroke, air is drawn in through the air intake filter and then through the air intake valves. The exhaust valve remains closed. On the upstroke of the piston, the air is compressed. The intake valves close and compressed air is forced out through the exhaust valve, through the outlet tube, through the check valve, and into the air tank. Working air is not available until the compressor has raised air tank pressure above that required at the air outlet.
- Check Valve: When the air compressor is operating, the check valve is “open,” allowing compressed air to enter the air tank. When the air compressor reaches “cut-out” pressure, the check valve “closes, “allowing air pressure to remain inside the air tank. If the air is not unloaded, the motor will try to start but will be unable to. The check valve allows the motor to restart freely.
- Pressure Switch: The pressure switch automatically starts the motor when the air tank pressure drops below the factory-set “cut-in” pressure. It stops the motor when the air tank pressure reaches the factory-set “cut-out” pressure.
- Pressure Release Valve: The pressure release valve is designed to automatically release compressed air from the compressor head and the outlet tube when the air compressor reaches “cut-out” pressure or is shut off. If the air is not released, the motor will try to start but will be unable to. The pressure release valve allows the motor to restart freely. When the motor stops running, air will be heard escaping for a few seconds. No air should be heard leaking when the motor is running.
- Safety Valve: If the pressure switch does not shut off the air compressor at or near its cut-out pressure setting, the safety valve will protect against high pressure by “popping out” at its factory set pressure (slightly higher than the pressure switch cut-out setting).
INSTALLATION AND BREAK-IN PROCEDURES
Location of the Air Compressor
- Operate the air compressor in a clean, dry, and well-ventilated area.
- The air intake filter must be kept clear of obstructions which could reduce air delivery of the air compressor.
- The air compressor should be located at least 12″ away from walls or other obstructions that could interfere with the flow of air through the fan-bladed flywheel.
- The air compressor crankcase and head are designed with fins to provide proper cooling.
- If humidity is high, a Sears air filter can be installed on the air outlet adapter to remove excessive moisture.
- The air compressor should be as near to air outlets as possible to avoid long pipelines.
- Do not place the air compressor where heat is excessive.
WARNING
- EXCESSIVE VIBRATION MAY WEAKEN THE AIR TANK AND CAUSE AN EXPLOSION.
- THE OUTFIT MUST BE MOUNTED AS DESCRIBED AND ILLUSTRATED BELOW.
- The air compressor must be bolted to the floor. Bolting holes are provided in the base feet.
- Mount the air compressor on a solid level foundation with no strain on the air tank feet. Solid shims may be used if necessary.
Piping
- CAUTION
- Plastic or PVC pipe is not designed for use with compressed air.
- Regardless of its indicated pressure rating, plastic pipes can burst from air pressure.
- Use only metal pipes for air distribution lines.
- If a pipeline is necessary, use a pipe that is the same size as the air tank valve.
- Piping that is too small will restrict the flow of air. If piping is over 100 feet long, use the next larger size.
- Bury underground lines below the frost line and avoid pockets where condensation can gather and freeze.
- Apply pressure before underground lines are covered to make sure all pipe joints are free of leaks.
Lubrication and Oil
- CAUTION
- Compressors are shipped without oil.
- Do not attempt to operate this air compressor without first adding oil to the crankcase.
- Place the unit on a level surface. Remove the oil fill plug and slowly add a special compressor oil such as Sears 9- 16426 or SAE-20-20W SF motor oil until it is even with the top of the oil fill hole.
- (It must not be allowed to be lower than 3/8″ – 6 threads down – from the top.)
- When filling the crankcase, the oil flows very slowly.
- If the oil is added too quickly, it will overflow and appear to be full. (Crankcase oil capacity is 16 fluid ounces.)
- Under winter-type conditions use SAE 10W oil.
- (Multi-viscosity oil – 10W30 – will leave carbon deposits on critical components reducing performance and compressor life.) Replace the oil fill plug.
Wiring Instructions
WARNING
- IMPROPER GROUNDING CAN RESULT IN ELECTRICAL SHOCK.
- WIRING OF THE PRESSURE SWITCH, ELECTRIC MOTOR, AND MANUAL ON/OFF SWITCH SHOULD BE DONE BY A LICENSED ELECTRICIAN PER NATIONAL AND LOCAL CODES AND ORDINANCES.
- To prevent added current draw and motor overheating we recommend the use of 12 gauge (AWG) wire, not exceeding a 70 foot length. The wire must be rated at a minimum temperature of 75° C.
When connecting wires, make sure that:
- the electrical box is large enough;
- service is of adequate amperage rating;
- the supply line has the same electrical characteristics (voltage, cycles, and phase) as the motor;
- the line wire is the proper size and
- no other equipment is operated from the same line.
- Various national and local codes and standards have been set up covering electrical apparatus and wiring.
- These should be consulted and observed. Our recommended wire sizes may be smaller than the minimum set up by local ordinances.
- If so, the larger size wire should be used to prevent excessive line voltage drop.
- For wiring instructions, see the diagram inside the pressure switch cover.
CAUTION
- Electrical wiring must be located away fromhot surfaces such as the compressor head, compressor cylinder or compressor outlet tube.
Break-In Procedures
CAUTION: Serious damage may result if the following break-in instructions are not closely followed. This procedure is required only once; before the air compressor is put into service.
- Recheck compressor wiring. Make sure wires are secure at all terminal connections. Free all contacts of loose wire cuttings, etc.
- Check the oil level in the crankcase before operation. The oil level should be even with the top of the fill hole and must not be allowed to be lower than 3/8″ (six threads down) from the top at any time. Add oil if the level is low.
- Open the outlet valve fully, to permit air to escape and to prevent pressure build-up in the air tank.
- Turn ON the air compressor.
- Run the air compressor for 30 minutes to seal the rings and lubricate all internal surfaces.
- Check all air line fittings and connections/piping for air leaks by applying a soap solution. Correct as necessary. Even minor leaks can cause this air compressor to overwork, resulting in premature breakdown or inadequate performance.
- Check for excessive vibration and noise. Adjust the air compressor belt guard as necessary to eliminate chatter. Re-adjust or shim the air compressor feet, if necessary for the proper level.
- Close the outlet valve and let the air compressor pump up to cut-out pressure. Turn the air compressor off and check the oil level. Add oil if necessary. Connect the air hose to the air outlet adapter. Your compressor is now ready for use.
OPERATING PROCEDURES
- Before attaching an air hose or accessory, make sure the Globe Valve OFF/AUTO lever is in the “OFF” position.
- Attach hose and accessory.
- WARNING: TOO MUCH AIR PRESSURE CAUSES A HAZARDOUS RISK OF BURSTING. CHECK THE MANUFACTURER’S MAXIMUM PRES- SURE RATING FOR AIR TOOLS AND ACCESSORIES. THE REGULATOR OUTLET PRESSURE MUST NEVER EXCEED THE MAXIMUM PRESSURE RATING.
- CAUTION: Compressed air from the outfit may contain water condensation and oil mist. Do not spray unfiltered air at an item that could be damaged. Some air-operated tools or devices may require filtered air. Read the instructions for the air tool or device.
- Turn the compressor on and allow tank pressure to build. The motor will stop when tank pressure reaches cut-out pressure. Your outfit is ready for use.
MAINTENANCE
WARNING
UNIT CYCLES AUTOMATICALLY WHEN POWER IS ON. WHEN DOING MAINTENANCE, YOU MAY BE EXPOSED TO VOLTAGE SOURCES, COMPRESSED AIR, OR MOVING PARTS. PERSONAL INJURIES CAN OCCUR. BEFORE PERFORMING MAINTENANCE OR REPAIR, TURN OFF AND LOCKOUT ELECTRIC POWER AND BLEED OFF AIR TANK PRESSURE. NEVER OPERATE THE COMPRESSOR WITH THE BELT GUARD REMOVED.
Air Compressor
- A clean air compressor runs cooler and provides longer service.
- Clean or blow off fins and any other parts of the air compressor that collect dust or dirt.
- Do not place rags, containers, or other material on or against the ventilation openings in the belt guard.
- Adequate ventilation is necessary to maintain proper air compressor operating temperature.
Air Filter – Inspection and Replacement
- NOTE: Keep the air filter clean at all times. Do not operate the compressor with the air filter removed. A dirty air filter will not allow the compressor to operate at full capacity. Before you use the compressor, check the air filter to be sure it is clean. If it is dirty, remove the screws and filter retainer. Pull out the filter, and replace it with a new one.
Oil – Checking and Changing
- CAUTION
- Overfilling with oil will cause premature compressor failure. Do not overfill.
- Check the oil level in the crankcase daily.
- The oil level should be even with the top of the fill hole and must not be allowed to be lower than 3/8″ from the top (6 threads) at any time. It is recommended that the oil be changed after every 100 hours of operation.
- To drain the oil, remove the oil drain plug and collect the oil in a suitable container.
- Be sure to replace the plug securely before adding new oil.
- Use a special com- pressor oil such as Sears 9-16426 or SAE-20-20W SF motor oil.
- (Crankcase oil capacity is 16 fluid ounces.) Under extreme winter conditions use 10 weight oil.
Air Tank – Draining Water
- WARNING
- WATER WILL CONDENSE IN THE AIR TANK.
- IF NOT DRAINED, THE WATER WILL CORRODE AND WEAKEN THE AIR TANK CAUS- CAUSING A RISK OF AIR TANK RUPTURE. Water should be drained from the air tank after each use.
- Operate the unit to apply 15-20 PSIG and open the drain cock.
- Continue operating the unit until all moisture is removed from the air tank. Close the drain cock tightly.
- NOTE
- If the drain cock valve is clogged, release air pressure in the air tank. The drain cock valve can then be removed, cleaned and reinstalled.
Check Valve – Inspection and Replacement
Remove the check valve for inspection or replacement if air tank pressure will
not build up. Use the following procedure to inspect, clean, or replace the
check valve.
- Release air pressure from the air tank.
- Loosen the top and bottom nuts and remove the outlet tube.
- Unscrew the check valve (turn counterclockwise) using a 7/8″ diameter 1/2″ socket wrench.
- Check that the valve disc moves freely inside the check valve and that the spring holds the disc in the upper, closed position. The check valve may be cleaned with a solvent.
- Apply sealant to the check valve threads. Reinstall the check valve (turn clockwise). The valve stem should still move freely – do not over-tighten.
- Replace the outlet tube and tighten the top and bottom nuts.
Safety Valve – Inspection
- WARNING
- IF THE SAFETY VALVE DOES NOT WORK PROPERLY OVER-PRESSURIZATION MAY OCCUR, CAUSING AIR TANK RUPTURE OR EXPLOSION.
- OCCASIONALLY PULL THE RING ON THE SAFETY VALVE TO MAKE SURE THAT THE SAFETY VALVE OPERATES FREELY.
- IF THE VALVE IS STUCK OR DOES NOT OPERATE SMOOTHLY, IT MUST BE REPLACED WITH THE SAME TYPE OF VALVE.
Motor
- The motor has a thermal overload protector.
- If the motor overheats for any reason, the overload protector will shut off the motor.
- The motor must be allowed to cool down before restarting. De-energize power supply.
- To restart, depress the reset button located on the end of the motor and energize the power supply.
NOTE: If the overload protector shuts the motor off frequently, check for a possible voltage problem. Low voltage can also be suspected when:
- the motor does not get up to full power or speed;
- fuses blow out when the motor is started;
- lights dim when the motor is started and remain dim while it is running.
Belt-Replacement
- WARNING
- SERIOUS INJURY OR DAMAGE MAY OC- CUR IF PARTS OF THE BODY OR LOOSE ITEMS GET CAUGHT IN MOVING PARTS.
- NEVER OPERATE E THE COMPRESSOR WITH THE BELT GUARD REMOVED. THE BELT GUARD SHOULD BE REMOVED ONLY WHEN THE POWER TO THE COMPRESSOR IS DIS- CONNECTED.
The motor is mounted on an adjustable motor base.
To replace the belt:
- Turn off and lock out the power source.
- Remove screws from the back of the belt guard.
- Loosen the four motor mounting screws.
- Slide the motor toward the compressor pump.
- Remove the belt and replace it.
- NOTE: The belt should be centered over the grooves on the flywheel and motor pulley.
- Push the motor back into regular position and tighten the bolts securely. Proper tension is approximately 1/4″ belt deflection measured midway between the pulley and flywheel when a 3-pound weight or equivalent finger pressure is applied at this point. A loose belt will squeal at the compressor start-up.
- Replace beltguard and screws.
Pulley and Flywheel – Alignment
- The compressor flywheel and motor pulley must be inline (in the same plane) within 1/16″ to ensure belt retention within sheave grooves.
- The motor mounting holes on the saddle are skewed to square the motor with the compressor mounting hole as the belt is tensioned.
- To check alignment, disconnect the electrical power and remove the belt guard. Place a straight- edge against the outside of the flywheel and measure the distance from it to the nearest groove.
- Alignment is achieved when the other end of the straightedge is within 1/16″ of the measured dimension at the pulley grooves.
- Squareness is achieved when the pulley grooves are at an equal distance from the straightedge on both sides of the motor shaft.
TROUBLESHOOTING GUIDE
WARNING
- UNIT CYCLES AUTOMATICALLY WHEN POWER IS ON. WHEN DOING MAINTENANCE, YOU MAY BE EXPOSED TO VOLTAGE SOURCES, COMPRESSED AIR OR MOVING PARTS. PERSONAL INJURIES CAN OCCUR.
- BEFORE PERFORMING MAINTENANCE OR REPAIR, TURN OFF AND LOCKOUT ELECTRIC POWER AND BLEED OFF AIR TANK PRESSURE. NEVER OPERATE THE COMPRESSOR WITH THE BELT GUARD REMOVED.
PROBLEM | CAUSE | CORRECTION |
---|---|---|
Excessive tank pressure – safety valve pops off. | The pressure switch does not | |
shut off the motor when the compressor reaches the” cut-out” pressure. | The |
pressure switch must be replaced.
Air leaks at fittings or hoses.| Tube or hose fittings are not tight enough.|
Tighten fittings where air can be heard escaping. Check fittings under a soapy
water solution. DO NOT OVER-TIGHTEN.
Air leaks at the check valve.| Defective or dirty check valve.| Remove and
clean or replace the check valve. DO NOT OVER-TIGHTEN.
Air leaks at the pressure switch release valve.| Defective pressure switch
release valve.| Remove and replace the release valve.
Air leaks at air tank welds.| Defective air tank.| The air tank must be
replaced.|
I WARNING **** I
DO NOT DRILL INTO, WELD OR OTHER-
WISE MODIFY AIR TANK. IT WILL BE WEAKENED.
Air leak from the safety valve.| Possible defect in safety valve.| Operate the
safety valve manually by pulling on the ring. If the valve still leaks, it
should be replaced.
| Restricted check valve.| Remove and clean or replace.
| Loose pulley.| Tighten the pulley set screw.
| Low oil level.| Maintain prescribed oil level.
| Loose flywheel.| Tighten screw.
| Loose compressor bolts.| Check bolts. Tighten as required.
| Loose belt.| Tighten the belt as per instructions under the Belt
Replacement above.
| Carbon build-up.| Remove the head and valve plate. Clean the valve plate
and the top of the piston. (Be sure carbon does not fall into the cylinder.)
Reassemble to 25- 30 ft. lbs. using a new gasket and torque screws.
AIR COMPRESSOR DIAGRAM
PARTS LIST
COMPRESSOR PUMP DIAGRAM
Parts Ordering Information
- Key No. 56, 57, and 58 are only available in Ring Kit KK-4313.
- Key No. 19, pressure release valve, and nut are available as part of Kit KK-4315.
- Key No. 50, 51, and 53 are only available in Valve Kit KK-4275.
- Key No. 46, 49, 55, 69, 72, 77 and 78 are available in Gasket Kit KK-4312-2.
SERVICE
- MODEL NO. 919.175260 HOW TO ORDER REPAIR PARTS
ONE-STAGE AIR COMPRESSOR
- Now that you have purchased your Sears Air Compressor, should a need ever exist for repair parts or service, simply contact any Sears Service Center and most Sears, Canada, Inc. stores. Be sure to provide all pertinent facts when you call or visit.
- The model number of your Sears Compressor is 919.175260. This number can be found on the label which is located on the front of the air tank saddle.
WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE FOLLOWING INFORMATION:
- PART NUMBER
- MODEL NUMBER
- PART DESCRIPTION
- NAME OF ITEM
If service or repair parts are required for the motor, supply all motor nameplate information including the manufacturer’s name. All parts listed may be ordered from any Sears Service Center and most Sears stores. If the parts you need are not stocked locally, your order will be electronically transmitted to a Sears Repair Parts Distribution Center for handling.
- SI-30-11-4 7/91
- Sears, Roebuck and Co., Chicago, IL 60684 U.S.A.
- Printed in U.S.A.
ONE YEAR WARRANTY
FULL ONE-YEAR WARRANTY ON AIR COMPRESSORS
- If this air compressor fails due to a defect in material or workmanship within one year from the date of purchase, return it to the nearest Sears Service Center/Department throughout the United States and Sears will repair it, free of charge.
- This warranty gives you specific legal rights and you may have other rights that vary from state to state. Sears, Roebuck and Co., Sears Tower, Dept. 698/731CR-2, Chicago, IL 60684
IMPORTANT: Read the Safety Guidelines and All Instructions Carefully Before Operating
ASSEMBLY OPERATION
ASSEMBLY OPERATION MAINTENANCE REPAIR PARTS
Record in the spaces provided.
- The model number which can be found on the label on the front of the air tank saddle.
- The code number which can be found on the foil label on the side of the air tank.
- The Manufacturer’s Number (ASME Code Compressors only) is located on the metal data plate which is welded onto the side of the air tank. (This data plate is painted the same color as the tank.)
- The Motor Manufacturer’s name is located on the motor label.
- The Motor Mfg. number – also located on the motor label. Retain these numbers for future reference.
- Model No.
- Code No.
- Mfg. No.
- Motor Mfg. Name
- Motor Mfg. No.
- Sears, Roebuck and Co., Chicago, IL 60684 U.S.A.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>