4720 What? no screen on the front

   / 4720 What? no screen on the front #1  

YesDeere

Platinum Member
Joined
Dec 19, 2008
Messages
972
Location
Merland
Tractor
04/4310
Just talking with my Father about his latest seat time. He was mowing a field off and was pretty dusty. So he decided he better clean the screen when done as it has been very warm lately. Well there is no removable screen on it. HUH?? I said "Pop its gotta be a mistake". He called dealer and they told him that this model does not have one. Any other owners wanna clarify? Thanks
 
   / 4720 What? no screen on the front #2  
JD Parts shows three engine versions for the 4720. All show a screen except for ENGINE (MARKED 4024HLV11) when used in a cab model. How new is the tractor and is it a cab?
 
   / 4720 What? no screen on the front
  • Thread Starter
#3  
Brand new this spring. And it is a cab. That doesn't make any sense. Why would they do that.
 
   / 4720 What? no screen on the front #4  
Is there a non-removable screen? Maybe hidden from view or not easy to see?

Manual say anything about cleaning the screen?
 
   / 4720 What? no screen on the front #5  
The front grill of the hood is the "screen". You blow that off. After 2-4 hours of mowing (depending on how wet, how much dry debris there is, etc) I lift the hood and blow any additional grass bits out of the radiators with compressed air. I've cleaned it off in the field (just with my gloves) once when things were really dry. I always use a leaf blower after every mowing to clean things up.

The screen on the front of the 4520 is a finer mesh than the screen in front of the radiators on my B21 TLB.

Pete
 
   / 4720 What? no screen on the front #6  
My 2009 JD 4720 open station has both the the exterior grill screen, as well as a "curtain" screen that hangs in front of the radiator inside the hood.
 
   / 4720 What? no screen on the front #7  
Brand new this spring. And it is a cab. That doesn't make any sense. Why would they do that.

Can't say why they would eliminate it, but it is the latest engine version they took it away from. Sounds like the one you have. I see nothing in JD Parts, removable or not, that takes its place.
 
   / 4720 What? no screen on the front #8  
Hmmm, better hood screen, no need for radiator screen - that does seem to make sense.
 
   / 4720 What? no screen on the front #9  
Hmmm, better hood screen, no need for radiator screen - that does seem to make sense.

To me, only makes sense if ALL the air coming through the radiator comes through the hood screen. With the one piece hoods, I don't think that is true.
I'd miss the screen also at the radiator.

But it has been a service problem, that people don't clean that screen and it plugs and causes overheating. Maybe this is a "fix" for those who don't pay attention to it. ??
 
   / 4720 What? no screen on the front #10  
I believe they put a seal around the radiator support so that the only air entering is from the grille. The grille does not keep the finer particles from going through the radiator.

The problem I am having when mowing with my 4720, is that the finer dust/grass particles are clogging the condenser causing the a/c stop cooling. This is frustrating in 100 degree heat! I have to blow out the intercooler, oil cooler, condenser, and the radiator out every 2-3 hours. When I blow them out, I can't be sure I'm not bending the fins with the air or nozzle because of the spacing between them.

I have addressed this issue with the dealer and they assure me that it has been reported to John Deere. In the meantime, they tried to adapt the earlier plastic screen to my tractor with no success. Hopefully they will figure out how to line the inside of the grille with a finer screen.

If anyone else is having this problem, I would encourage them to report it to John Deere directly or through the dealer. Without enough case files, they probably wouldn't be too motivated to correct this problem.
 

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