John Deere X758 Radiator Placement reason .

[RidgeTopWVA]

I might have missed a thread addressing this question , I am curious why the John Deere X758 radiator is located on the end of the engine next to the dash and not located on the front end of the engine.
Is it because of the size of the cooling unit and next to the dash it has a better fit than it would on the front end of the engine affecting overall length and apperance or did the engineers/designers think that next to the dash it would be more efficient .
Has any of the other manufactures IE: Kubota , New Holland ,Case etc used a similar design ?
Thank you

 

[beenthere]

Been that way for years.. my first experience I think was in 1998 on my JD 425.

Unlike a car where air flow through the radiator from highway travel probably has an influence on design, placement of fan to move air through the radiator on a yard tractor not so important.

Probably a bit of all your "because" factors enter into the design equation. Even weight distribution likely enters in.

Is it a game changer, or just a curiosity ?

 

[RidgeTopWVA]

Been that way for years.. my first experience I think was in 1998 on my JD 425.

Unlike a car where air flow through the radiator from highway travel probably has an influence on design, placement of fan to move air through the radiator on a yard tractor not so important.

Probably a bit of all your "because" factors enter into the design equation. Even weight distribution likely enters in.

Is it a game changer, or just a curiosity ?

I am just curious , the mid size John Deere diesel compact tractors have the radiators in the front compared to the John Deere diesel Garden tractors with them next to the dash and I was curious why the garden tractors were different.
I am just wondering what the avantages/disadvantages I have never given it much thought as to why and never had it explained to me from anyone that would have more knowledge than me.

 

[ruffdog]

The screening around the dash sure helps to limit the grass sucked into the radiator. The design probably helps to keep the package more compact too.

 

[bigtiller]

I always figured the mid-mount radiator and suction screen between the knees was to insure that your pants got dirty while mowing.

 

[Eagle1]

Does it blow at the operator? The Kubota BX has that design but the fan pushes the air forward away from the operator. With intake at the operator station it does not collect nearly has much chaff as a traditional fan and radiator setup. I can cut for weeks without cleaning screen and radiator.

 

[bigtiller]

My deere 425 blew forward.

 

[beenthere]

Does it blow at the operator? The Kubota BX has that design but the fan pushes the air forward away from the operator. With intake at the operator station it does not collect nearly has much chaff as a traditional fan and radiator setup. I can cut for weeks without cleaning screen and radiator.

Does not blow at the operator. And it does not get your pants dusty or dirty.

 

[bigtiller]

Does not blow at the operator. And it does not get your pants dusty or dirty.

On a dry windy day my pants got dusty. I could occasionally see the dandelion fuzz and dust particles drift past my legs and towards the intake screen but I seldom had to wipe it clean. It seams like it circled around a bit, landed on the hump and vibrated down to the foot boards.

 

[RidgeTopWVA]

Do the screens on the rear mounted radiators and filters ever cause anyone problems in freezing weather freezing over during snow falls and or frosty air conditions ice build ups freezing moisture etc. Is there anyway low air flow restriction in cold temperatures cause an over heating situation due to low airflow ?

 

[ruffdog]

Never had a problem. Neighbor has 2 x7** and mows a lot, I have a x744 and dad has a x749 and we have not had a problem.

 

[beenthere]

Do the screens on the rear mounted radiators and filters ever cause anyone problems in freezing weather freezing over during snow falls and or frosty air conditions ice build ups freezing moisture etc. Is there anyway low air flow restriction in cold temperatures cause an over heating situation due to low airflow ?

No

 

[bigtiller]

^^^^Agreeing with beenthere.

I had an aftermarket Cozy Cab on a 425. Cozy had a vinyl cover for the intake screen that was installed with Velcro patches and it's purpose was to block air from entering the suction screen. It helped keep the cab a little warmer in the winter.

 

[oldtimer 66]

My brother in laws JD 748, is like that. What I don't understand is why they put the electrical fuse box in front of the radiator, in the path of the radiator intake air. This some what dirty air degrades the the electrical circuit over time. This makes it compact but makes it a Mickey Mouse design.

 

[beenthere]

Don't find that to be a problem. But do blow that area out each time I open the hood and use compressed air blow gun to remove the debris from the radiator screen and back blow through the radiator to remove fine dust. At the same time blow the dust off the circuit board. This happens after every mowing, before the tractor is put away for the night.

And for sure, do not spray that area down with water that just mixes with the dust and causes mud.

 

[ruffdog]

Don't find that to be a problem. But do blow that area out each time I open the hood and use compressed air blow gun to remove the debris from the radiator screen and back blow through the radiator to remove fine dust. At the same time blow the dust off the circuit board. This happens after every mowing, before the tractor is put away for the night.

And for sure, do not spray that area down with water that just mixes with the dust and causes mud.

Yep...same here.

 

[oldtimer 66]

I forgot to clarify that this JD 748 has a Cozy cab. The rad screen does not come out easily because of the foot well structure and there is additional wiring because of the cab. A blow gun and a aluminum finned radiator are not a good mix.

 

[beenthere]

Guess you need to find a way around the problem. Since 1998, have had several Deere lawn tractors of this frame size and not a single problem using the blow gun to blow out the radiator. Good judgement is needed as to pressure used and distance from the fins, for sure.

 

[RidgeTopWVA]

Thanks guys I sure like hearing what you have to say....it's good info.

 

[oldtimer 66]

Here is what I use to clean my tractor radiator. I use my shop vac. I reverse the the hose connection to blow versus vacuum. You get a large volume of low pressure air that way. It a Craftsman either 5.5 hp.