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Model # EX840300 Official Campbell Hausfeld air compressor
Here are the diagrams and repair parts for Official Campbell Hausfeld EX840300 air compressor, as well as links to manuals and error code tables, if available.
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EX840300 Power Tools
#14
Compressor diagram
Pressure switch
Part #CW207594AV
The manufacturer no longer makes this part, and there's no substitute part
#2
Compressor diagram
Air tank
Part #AR234000CG
The manufacturer no longer makes this part, and there's no substitute part
#17
Compressor diagram
Valve
Part #V-215200AV
The manufacturer no longer makes this part, and there's no substitute part
#6
Compressor diagram
Drain cock, 3/8-in
Part #ST127700AV
The manufacturer no longer makes this part, and there's no substitute part
#32
Pump assy diagram
Filter assembly
Part #FP050056AV
The manufacturer no longer makes this part, and there's no substitute part
#9
Compressor diagram
Compression nut
Part #ST033001AV
The manufacturer no longer makes this part, and there's no substitute part
#44
Pump assy diagram
Cylinder
Part #FP050065AV
The manufacturer no longer makes this part, and there's no substitute part
Gasket kit
Part #FP050068AV
The manufacturer no longer makes this part, and there's no substitute part
#10
Compressor diagram
Exhaust tube
Part #XP050100AP
The manufacturer no longer makes this part, and there's no substitute part
#8
Compressor diagram
Compression ferrule, 1/2-in
Part #ST032900AV
The manufacturer no longer makes this part, and there's no substitute part
Most common symptoms to help you fix your air compressors
Choose a symptom to see related air compressor repairs.
Main cause: bad check valve…
Main causes: tank drain valve open or leaking air, leaky air tank, bad safety valve, worn pump seals, bad pump valve pla…
Main cause: faulty output air pressure regulator…
Main cause: bad air tank pressure gauge…
Main causes: bad safety valve, pressure switch failure…
Main causes: loose air tube fitting connections, bad check valve, faulty safety valve, damaged or corroded air tank, bad…
Main causes: rusted air tank, loose air tube fitting connections, bad check valve, leaky safety valve, bad tank drain va…
Main causes: lack of electrical power, check valve failure, bad pressure switch…
Most common repair guides to help fix your air compressors
These step-by-step repair guides will help you safely fix what’s broken on your air compressor.
How to replace an air compressor check valve
You can replace a defective air compressor check valve in about 10 minutes.…
Repair difficulty
Time required
15 minutes or less
How to replace an air compressor pressure switch
You can replace a broken air compressor pressure switch in about 45 minutes. …
Repair difficulty
Time required
45 minutes or less
How to rebuild an air compressor pump
If the air compressor won't fill the tank with compressed air, rebuild the pump using these steps in about 45 minutes. …
Repair difficulty
Time required
45 minutes or less
Effective articles & videos to help repair your air compressors
Use the advice and tips in these articles and videos to get the most out of your air compressor.
Find out how to reduce air compressor noise.…
Learn about the possible dangers associated with using an air compressor and how you can reduce the risks of property da…
Learn how to maintain an oil-less air compressor for safe and efficient operation.…