M7040 Compressor Failure?

[TxFireman]

I picked up a 2013 M7040 with 1400 hours from a family member. They stated “AC doesn’t blow cold”. After checking a few things I’m assuming compressor is shot!

I have already:

• Cleaned cabin filters
• Inspected evaporator under seat (all clear)
• Cleaned condenser and radiator
• Installed shutoff valves in heater core lines
• Put gauges on with tractor running and AC on it shows 100 on both low pressure side and high pressure side
• Clutch is spinning continuously

Just looking for ideas, suggestions or confirmation before I tear into it. Also curious if anyone can recommend the best place to buy after market components. Thanks in advance!

August 10, 2026

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[Bee-Positive]

The compressor is running but not pumping = bad compressor - replace it.

 

[TxFireman]

The compressor is running but not pumping = bad compressor - replace it.

Any aftermarket parts worth using?

 

[Bee-Positive]

Never had to buy one but doing a quick search I found prices all over the place - $350 from tractorpartsasap to almost $1,000 from Kubota.

Maybe another member with more experience will chime in soon.

 

[number two]

Is the compressor clutch engaged.or is the clutch just turning without turning the compressor shaft itself?
In the Texas heat,those gauge readings look like you're out of refrigerant?
No juice will show about ambient on the gauge.
Good Luck!

 

[BAP]

AP Air Inc is a good source for tractor air conditioning parts.

AP Air Inc - KUBOTA M7040 TRACTOR

Agricultural Air Conditioning, Air Conditioning Parts and Supplies, Condensers, Evaporator, Radiator, Blower, Switches

www.apairinc.com

 

[Tughill Tom]

Low Pressure cut out kicked in , low on refrigerant . Pull a Vacuum on system & checked for leaks 1st.