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Old 12-10-2015, 01:29 PM   #1
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Radiator cleaning important !

Just got done changing out my radiator. I clean it very often and do all my service work. When I got to it I could not believe my eyes. It did have a few fins missing I knew that but it was completly plugged. I have even made a speical tool just for spraying it out. I don't think the previous owner ever cleaned it and it was pretty much plugged before I started cleaning it. Moral of the story clean your radiator and save some money. Glad i was handy enough to change it myself or it would of been big bucks.
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Old 12-10-2015, 01:43 PM   #2
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I hate expensive lessons! And I agree that it is very important!
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Old 12-10-2015, 02:54 PM   #3
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Certainly saves a pullover on a long hot hill with engine shutdown alarm blaring.
Save some future cleaning by relocating any slobber tube well clear of the cowl intake.
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Old 12-10-2015, 03:18 PM   #4
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Quote:
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Save some future cleaning by relocating any slobber tube well clear of the cowl intake.
agree, i took a short piece of 3/4" PVC forced it up into the rubber tube then a 90, then about a 24-30" piece straight (with a bit of a slope) out the side, supported it with extra large wire tie or zip strip.

Big difference.

As to cleaning it I used Simply green from both sides and flushed it a lot.

Final clean was the A/C coil spray, more flushing.

Amazing the crap flushed away.
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Old 12-10-2015, 03:31 PM   #5
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This is the way mine looked when I bought it. I got it done at a truck shop along with belts, pulleys, thermostat and a valve set to the tune of $5000 Canadian. I also had them extend the slobber tube.
Temp sits between 188 and 193 no matter the weather or grade.


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Old 12-10-2015, 05:22 PM   #6
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Mine is a side radiator no slobber tube problems. That was on the last one. I use the same techique, simple green and a water hose hooked to my 3/8 copper tube with the end crimped a little to fan out. I use it so I can reach in and not get soaked. Do both sides, when going from the outside I run the engine at high idle to suck the water through. Always worked until now, Oh well all is good now.
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Old 12-10-2015, 05:32 PM   #7
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Mine is a side radiator no slobber tube problems. That was on the last one. I use the same techique, simple green and a water hose hooked to my 3/8 copper tube with the end crimped a little to fan out. I use it so I can reach in and not get soaked. Do both sides, when going from the outside I run the engine at high idle to suck the water through. Always worked until now, Oh well all is good now.
I had to replace mine a couple of years back, and after pulling it apart, I was also shocked at the dirt, leaves, mud......and so on, and then in the front side of it is a CAC and transmission coolers........I came to the conclusion that in order to properly clean a side/rear radiator, the very least that has to be done is the CAC removed, so one can get to "BOTH" sides to clean it properly. Any other way, is stabbing in the dark, and sooner or later, it will have be ripped apart, taken out, cleaned/repaired/replaced. It is not a matter of "If" with a older Coach, the question is "When".......if it has not been done. Winter driving will speed that "When" process up.......
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Old 12-10-2015, 07:55 PM   #8
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I'm hoping to be good to go as long as I own this coach. I am real crazy about cleaning the radiator. As we all know we are fair weather drivers and we don't run in the rain if we have a choice so the radiator does not get flushed.This is why you have to clean it yourself. Jim.
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Old 12-10-2015, 10:21 PM   #9
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These are great photos. Sometimes it's hard to explain to people how dirty these can get because they are so hard to see.
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Old 12-12-2015, 02:57 PM   #10
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Going to try to post a Utube video of my old radiator. This will show the condition it was in. Rotten and plugged. Here goes nothing. Jim
https://youtu.be/KMHnl-Xp1KA
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