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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Model diagram and schematic

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ALL PARTS

Showing 10 of 55 parts |

Ring kit

Part #FP050060AV

The manufacturer no longer makes this part, and there's no substitute part

Compressor diagram

Compression nut

Part #ST033001AV

The manufacturer no longer makes this part, and there's no substitute part

#12

Compressor diagram

Fitting

Part #ST081301AV

The manufacturer no longer makes this part, and there's no substitute part

#31

Pump assy diagram

Fitting

Part #FP050058AV

The manufacturer no longer makes this part, and there's no substitute part

Hp piston

Part #FP050062AV

The manufacturer no longer makes this part, and there's no substitute part

Assembly kit

Part #FP050044AV

The manufacturer no longer makes this part, and there's no substitute part

#16

Compressor diagram

Gauge

Part #GA031900AV

The manufacturer no longer makes this part, and there's no substitute part

#25

Pump assy diagram

Fitting

Part #FP050053AV

The manufacturer no longer makes this part, and there's no substitute part

#26

Pump assy diagram

Cyl. head

Part #FP050054AV

The manufacturer no longer makes this part, and there's no substitute part

Bolt kit

Part #FP050067AV

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.

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Why does my air compressor safety valve keep popping open?

Main causes: bad safety valve, pressure switch failure…

Why won't my air compressor tank hold air?

Main causes: rusted air tank, loose air tube fitting connections, bad check valve, leaky safety valve, bad tank drain va…

Why won't my air compressor start with a full air tank?

Main cause: bad check valve…

Why can't I adjust the output air pressure on my air compressor?

Main cause: faulty output air pressure regulator…

Why does air leak from my air compressor?

Main causes: loose air tube fitting connections, bad check valve, faulty safety valve, damaged or corroded air tank, bad…

Why is my air compressor not turning on?

Main causes: lack of electrical power, check valve failure, bad pressure switch…

Why won't my air compressor build tank pressure?

Main causes: tank drain valve open or leaking air, leaky air tank, bad safety valve, worn pump seals, bad pump valve pla…

Why doesn't my air compressor's pressure gauge work?

Main cause: bad air tank pressure gauge…

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.

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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.

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Model # EX840300 Official Campbell Hausfeld air compressor

Model diagram and schematic

SEARCH WITHIN THIS MODEL

Most common symptoms to help you fix your air compressors

Why does my air compressor safety valve keep popping open?

Why won't my air compressor tank hold air?

Why won't my air compressor start with a full air tank?

Why can't I adjust the output air pressure on my air compressor?

Why does air leak from my air compressor?

Why is my air compressor not turning on?

Why won't my air compressor build tank pressure?

Why doesn't my air compressor's pressure gauge work?

Most common repair guides to help fix your air compressors

How to replace an air compressor check valve

How to replace an air compressor pressure switch

How to rebuild an air compressor pump

Effective articles & videos to help repair your air compressors

How to reduce air compressor noise

The unseen dangers of air compressors

How to maintain an oil-free air compressor

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