3915904 | Genuine Haldex® Air Compressor C-Series

Air compressors provide energy to tools like:
Impact wrenches
Nail guns
Spray guns
Ratchets
Air hammers
Used widely in mechanic shops, factories, and construction.

2. Air Brake Systems (in Trucks, Buses, Heavy Equipment)

In vehicles like semis and tractors, air compressors:
Generate pressurized air
Store it in tanks
Use it to apply the brakes safely
 Essential for safe braking in large vehicles.

3. Air Suspension Systems

Compressors fill air springs or bags to:
Level the ride
Adjust height/load
Improve comfort and stability
Common in buses, RVs, and heavy trucks.

4. Inflating Tires or Air Storage

Used to:
Inflate vehicle tires
Store compressed air for emergency or continuous use

5. Running Machinery in Factories

In industrial settings, compressors:
Run robotic arms
Power assembly lines
Control valves and actuators
Replaces electric or hydraulic systems in many cases.

6. Clean Blowing and Cooling

Compressed air is used to:
Blow off dust/debris
Cool equipment
Clean surfaces in electronics or precision manufacturing

7. Engine or System Support

In some diesel engines or agricultural equipment (like those with the DZ116439 compressor):
It supports braking and accessory functions
Helps run air clutch, transmission, or engine controls

1. Low or No Air Pressure

Symptoms: Brakes don’t engage properly, air tools are weak, slow air build-up.
Cause: Worn-out pistons, damaged valves, air leaks, or a seized compressor.

2. Unusual Noises

Symptoms: Knocking, grinding, squealing, or rattling from the compressor.
Cause: Internal wear, broken bearings, connecting rod issues, or belt problems.

3. Air Leaks

Symptoms: Hissing sound, constant running, loss of pressure when system is off.
Cause: Leaky hoses, cracked fittings, damaged seals or compressor head gasket.

4. Overheating

Symptoms: Compressor feels extremely hot to the touch, shuts down frequently.
Cause: Blocked cooling fins, dirty filters, internal friction, or lack of lubrication.

5. Takes Too Long to Build Pressure

Symptoms: The air tank fills slowly or not at all.
Cause: Worn piston rings, leaky valves, or weak drive system.

6. Oil Leaks or Excessive Oil Use

Symptoms: Oil around compressor or oil getting into the air system.
Cause: Worn seals, damaged crankshaft, or internal wear.

7. No Power or Won’t Turn On

Symptoms: Compressor doesn’t start or trips breaker/fuse.
Cause: Electrical issue, motor failure, or seized internal parts.

8. Check Engine Light / Fault Codes (in vehicles)

Symptoms: Warning lights, brake system alerts.
Cause: ECM detects low air pressure, faulty compressor sensor, or failure to reach required PSI.