mkt
Member
Dad has Kubota with cab. A/C runs for a while then stops working. Anyone know the pressure gauges should read when connected? Thanks
Kubota Cab 3430 / A/C /pressures for A/C
- Thread starter mkt
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nybirdman
Super Member
Just add refrigerant per instructions on can.
Tx Jim
New Member
I guessed your tractor AC uses 134A refrigerant. As you can determine from chart below ambient temperature affects correct charge pressures. Be sure radiator, condenser & cab filter are free of foreign material that will block good air flow. I also recommend installing manual heater hose coolant cut-off valve if one isn't already installed.
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jaxs
Elite Member
Just gas it and go. If it still doesn't work,giver a little more.
Here's how TBN fixes tractor ac. Wag wag here,wag wag there,here a wag there a wag.
Here's how TBN fixes tractor ac. Wag wag here,wag wag there,here a wag there a wag.
Tx Jim
New Member
Over filling AC system with 134A is more detrimental(lowers cold air output) more than on older type systems using R12
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As well as destroy the system from over pressure. The pertinent shop manual will state the correct charge applicable to the system and... your local dealer will know, try asking them.
Winging it can and will destroy the system.
jaxs
Elite Member
I've also heard a bad metering device will cause poor cooling.
Tx Jim
New Member
Monitoring operating pressures should determine if expansion valve is faulty
jaxs
Elite Member
Well yea but in TBN tradition ,no need for details,just wag at it and go on to next thread.