RK37 AC

   #1  

chesternator

Silver Member
Joined
Nov 26, 2018
Messages
124
Tractor
RK37 HC Hydrostatic Cab
Anyone else find the AC only blew cold on the first use? Worked good day1 but it's hot air now. When I put it on vent without AC the air is hotter than the air outside. I removed the 2 metal filters in front of the radiators and blew them out but it didnt help much.
 
   #2  

g8erh8er

Silver Member
Joined
Oct 21, 2013
Messages
206
Location
Dade City, FL
Tractor
RK55HC
I have the RK55. Have noticed no degradation in AC coolness over the 13 hrs I’ve had it running.
 
   #3  

DonRybak

Silver Member
Joined
Jun 14, 2018
Messages
205
Location
Haines City, FL
Tractor
RK37HC
I have about 39 hours on my RK37HC and the A/C is just as cold now as day one. Are you sure tat you have the center knob turned on and the right knob turned fully counter clockwise?.............Don
 
  
  • Thread Starter
#4  
OP
C

chesternator

Silver Member
Joined
Nov 26, 2018
Messages
124
Tractor
RK37 HC Hydrostatic Cab
Yes it is definately turned on and all the way up. It's slightly cool for a few minutes but then turns hot. I thoroughly cleaned under the hood again but it made no difference. It sounds like others dont share this issue so I should ask how to troubleshoot from here. The switches are definately working as I can tell a difference when turned the other direction.

Should the compressor be cycling off and on? I think mine just stays on but need to check. I want to say they will cycle more often when they are low on freon which would indicate that's not my issue here. I've got gauges but I dont know what I should be aiming for on my tractor. What I find odd is that even with AC off and fan on, the air will turn much warmer than the air outside.

Oh and the front most vents closer to the windshield are warmer than the those directly in front of me. This seems odd to me because they should be the same source of air? I am not imagining it, it's clearly warmer.

The AC was definately cold the first day I used it but the next day was not.
 
   #5  

cdb2

Silver Member
Joined
Jul 3, 2018
Messages
179
Location
Central Texas and Central Virginia
Tractor
RK55HC
Mine is also just as cold as when new, so far as I can tell. Have you confirmed that the compressor clutch is engaging when you turn it on? The control wires look like regular spade terminals, seems like it's possible they could vibrate loose.
 
   #6  

TractorGuy

Elite Member
Joined
Sep 15, 2013
Messages
4,611
Location
N. FL
Tractor
John Deere 4310 CUT, Ford New Holland 575E Industrial Backhoe, John Deere F725 Front Mount Mower
Sounds like your system developed a leak. Call the dealer.
 
  
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#9  
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chesternator

Silver Member
Joined
Nov 26, 2018
Messages
124
Tractor
RK37 HC Hydrostatic Cab
So a bit more on this.
I confirmed the compressor is turning off and on with the dash switch as it should
The compressor is not cycling often which would indicate a low freon situation
Temp of the blowing air seems to be unchanged by turning AC on or off or moving the dial from hot/cold

At this point I'm leaning toward an issue with the hot/cold dial.

I dont have means to take it to the dealer and I doubt they would cover under warranty anyway.
 

DonRybak

Silver Member
Joined
Jun 14, 2018
Messages
205
Location
Haines City, FL
Tractor
RK37HC
Why wouldn't they cover it??? It has a bumper to bumper warranty. Per their website they have mobile units that I assume is to perform minor warranty work within a reasonable distance.
 
 
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