4x20 cabin air filter

/ 4x20 cabin air filter #21  
Its a very mild cleaner, and it is for the evap. I believe it is a spray nine product. Will look today. But your are right, there are some really nasty cleaners out there.

I worked on reefer units for a long time and had to use some of the harsh cleaners on the condensers. Nu brite I think is what it was. You can't leave it on very long at all. But man does it foam and push that road grime out. Made for much more tolerable head pressures.
 
/ 4x20 cabin air filter #22  
I was wrong. It's a zep product.
 

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/ 4x20 cabin air filter #23  
I buy mine from Johnstone Supply, some aerosol cans and some gallon jugs. No more than I need it the spray cans are good enough. I would much prefer not having to take the top off to clean the coil but it looks pretty tight in there.
 
/ 4x20 cabin air filter #24  
here ya go some good stuff especially in this Texas heat/humidity of today
 

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/ 4x20 cabin air filter #26  
I'm sure your probably exaggerating a tad just to make a point but if that were true that its so bad you have to clean a cabin air filter every hour, you would have to do the same for the engine air filter and your radiator fins. Your machine would be a nightmare. Working in mass e excavation I have been in some disaster situations but can still get a full week in before cleaning anything. Just saying, you must be exaggerating a bit


I don't think he is exaggerating at all.. on my 3520 today and yesterday, while bush hogging... I had to clean it every hour.. including grille and radiator, else heat alarm would come on...
 
/ 4x20 cabin air filter #27  
I buy mine from Johnstone Supply, some aerosol cans and some gallon jugs. No more than I need it the spray cans are good enough. I would much prefer not having to take the top off to clean the coil but it looks pretty tight in there.

So... can you just spray that on the coil through the hole where the filter goes, without removing the cab roof? Does it not tear anything up in blower? Cause foul smell or vapors in cab?
 
/ 4x20 cabin air filter #28  
So... can you just spray that on the coil through the hole where the filter goes, without removing the cab roof? Does it not tear anything up in blower? Cause foul smell or vapors in cab?

It won't hurt the blower to spray the coil from the outside but it may not do a good enough job of cleaning either. I will look at it this morning to pass judgement.



Until the July 4th weekend it was so dry in New Mexico that dust was a huge problem for us. In some cases I had to till against the wind to see where I was going, then wait for the dust to clear driving back to the other end and make another pass. That was tough on air filters of all kinds. I am sure Texas was very similar.
 
/ 4x20 cabin air filter #29  
So... can you just spray that on the coil through the hole where the filter goes, without removing the cab roof? Does it not tear anything up in blower? Cause foul smell or vapors in cab?

To my thinking trying to clean evaporator through access hole that cab filter fits in is very similar to showering ones body with you "undies" still on.:thumbdown:
 
/ 4x20 cabin air filter #30  
Waste of cleaner. But why even consider it, when the cabin filter comes right out by removing two simple thumbscrews? Remember, the owner manual is your friend.

By the way, how many of you have ever removed and washed the foam dust filters on the cab side of the evaporator.?

//greg//
 
/ 4x20 cabin air filter #31  
Waste of cleaner. But why even consider it, when the cabin filter comes right out by removing two simple thumbscrews? Remember, the owner manual is your friend.

By the way, how many of you have ever removed and washed the foam dust filters on the cab side of the evaporator.?

//greg//


You are missing the point, no one is saying to leave the filter in place to clean it. I would not put coil cleaner on the dry filter element in any case. I looked at the evaporator and agree with Jim that access is too limited to do much good. Need to remove the lid to do anything with it.
 
/ 4x20 cabin air filter #32  
It worked. Probably not the best. But a good quick fix. Got a lot of dirt out. Maybe use it as maintenance and do a yearly big clean?
 
/ 4x20 cabin air filter #33  
I spray mine with coil cleaner every time I take the cabin filter out for cleaning. I do it with the circulation fan on high so the cleaner is drawn through the fins toward the interior. The stuff I use is not a pressurized aerosol, it has a sprayer head that's squeezed by hand. It's non-toxic, biodegradable, and all that crap. But what's more important, it's nicely scented. When you can smell it inside the cab, you know it's working.

//greg//
 
/ 4x20 cabin air filter #34  
greg_g
If cab air filter is serviced and installed correctly no debris should ever make it to the evap. coils.The correct method to clean evaporator coil is remove cab roof and the cover that covers evaporator & get the debris out of that compartment.. Greg cleaning the coil the way you're doing it is similar to sweeping the floor and leaving the sweepings in the corner of the room. Debris is readily available to get back into coil. Believe me the cab roof & cover are relatively simple to remove. Operators with cab & AC need to understand that these AC systems operate in adverse conditions and to keep them operating at the maximum thy need all the correct maintenance they can get.
 
/ 4x20 cabin air filter #35  
What if the crap filter fails? Which they do quite often.

Crap deign - cant defend John Deere n this one.

D.
 
/ 4x20 cabin air filter #36  
I looked at mine yesterday afternoon and will pull the top off to clean it up. Need to make a trip to the dealer for a new filter first. Gotta say the dust was real thick when using the tractor this year. I didn't have any problems with my filter edges coming apart as Darin's did but think that would be a sore point as much as the filters cost.

I do like the engine air filter setup with the double elements this seems to work well, my inner element always looks very clean. I remember my Donaldson pre filter cup on the 4020 would catch a huge amount of dust before it ever made it to the filters. That was a good design but no one wan'ts that sticking up above the hood anymore.
 
/ 4x20 cabin air filter #37  
Concur. It's no coincidence that most of the visible debris on the filter side of the evap is white. And that's despite regular cleaning between annual filter changes. I'm currently on my 3rd filter in 2.5 years of ownership. If JD wouldn't charge an absurd $33+ for a cabin filter, I'd change it more often. Aftermarket is worse, NAPA wants over $40 for one.

I like that pre-filter idea though. I'm going to try a piece of thin foam cut to nest within the black seal border.

//greg//
 
/ 4x20 cabin air filter #39  
Assuming it uses the same filter as does my 3720, that one won't work. As installed, it would be both too tall and too narrow. I just measured mine, it slots into a cavity that's 14-1/8" by 4-1/8"

//greg//
 
/ 4x20 cabin air filter #40  
Assuming it uses the same filter as does my 3720, that one won't work. As installed, it would be both too tall and too narrow. I just measured mine, it slots into a cavity that's 14-1/8" by 4-1/8"

//greg//


yup it looks like its not going to work....it was close....
 

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