Odyssey 4x4 Posted January 26, 2014 Author Share Posted January 26, 2014 The fluid is new as I have just replaced that seal and not driven it too much since then. It does in fact also have the aux cooler for trans fluid which is what saved the transmission. I will make sure to open this port and change transmission fluid. I will also likely replace the rear seal to have peace of mind. The transmissions works as it should so I doubt this has caused any thing to worry about other than the rear extension housing seal. Quote Link to comment Share on other sites More sharing options...
stamar Posted January 27, 2014 Share Posted January 27, 2014 Ive done some reading because its come up few times But there are people that bypass water cooling for a large air cooler. Its complicated to explain. Even though water cools 32 times faster than air. Ok so theres some logic to it. Dont need to get into it But the air cooler we have is not what they use they use a big one.... I think our air cooler is not the right size and needs an upgrade We have some evidence that it will survive bypassing the rAdiator using the small external one but id say it needs a temperature guage installed I had air cooled oil in my vw and if it got hot you pulled over thats how it works. So they could have done it on purpose Quote Link to comment Share on other sites More sharing options...
Bob C Posted January 27, 2014 Share Posted January 27, 2014 I also have an '88 Escaper. I believe that it came from the (RV) factory with an auxiliary tranny cooler. The one that is in there is not extremely large and I have a larger one (almost twice as big) sitting in the garage so it may get swapped out. Keep posting pictures of your repair, it may be helpful to someone. Quote Link to comment Share on other sites More sharing options...
Maineah Posted January 27, 2014 Share Posted January 27, 2014 The fluid is new as I have just replaced that seal and not driven it too much since then. It does in fact also have the aux cooler for trans fluid which is what saved the transmission. I will make sure to open this port and change transmission fluid. I will also likely replace the rear seal to have peace of mind. The transmissions works as it should so I doubt this has caused any thing to worry about other than the rear extension housing seal. I still would have a real good look at the bushing it is the only thing that supports the output shaft of the transmission. If the bushing is bad and left alone it will eventually trash the governor rings and they in turn will trash the trans case. The air cooler is not enough to cool your trans properly but it's your transmission. The later trucks (not just MH's) had extra coolers for good reason but like Bob C said they are small. Quote Link to comment Share on other sites More sharing options...
Maineah Posted January 27, 2014 Share Posted January 27, 2014 Ive done some reading because its come up few times But there are people that bypass water cooling for a large air cooler. Its complicated to explain. Even though water cools 32 times faster than air. Ok so theres some logic to it. Dont need to get into it But the air cooler we have is not what they use they use a big one.... I think our air cooler is not the right size and needs an upgrade We have some evidence that it will survive bypassing the rAdiator using the small external one but id say it needs a temperature guage installed I had air cooled oil in my vw and if it got hot you pulled over thats how it works. So they could have done it on purpose If any one was dumb enough to remove the water cooler they had no ideal of how it works and probably reasoned that you can't cool a transmission with hot water. Ever wonder why they are on the bottom? You guessed it that is where the cold water is. The worst heating of a non lockup converter is at highway speeds this is what makes heat in a transmission it is the converter slipping, the extra cooler is in the air stream with a fan helping pull air past it and it's turning pretty fast at speed. Stamer all air cooled vehicle and air craft engines all had oil coolers for the same reason transmissions have coolers to keep from cooking the oil. How did know your VW was hot they never had temp gauges and if you add one do you mind telling us just how hot your oil was allowed to get before you pulled over? It never seemed to be an issue in my Porsche. Quote Link to comment Share on other sites More sharing options...
Odyssey 4x4 Posted January 27, 2014 Author Share Posted January 27, 2014 Since the engine is out of the truck I am going to go ahead and pull the transmission out and replace that seal in the back "just in case" and will fix the crimped line. I will keep the thread updated as the repair continues. Quote Link to comment Share on other sites More sharing options...
Derek up North Posted January 27, 2014 Share Posted January 27, 2014 Looking at your pictures, it looks like the crimped fitting should unscrew from the radiator. I've no idea how 'standard' this fitting might be and therefore how easy it would be to find a replacement. But maybe a few phone calls to radiator shops would save you some $$. One thought that comes to mind. Maybe the built-in transmission cooler was leaking and someone crimped the fitting and bypassed the radiator as a 'quick fix'. So even if you repair the crimped fitting, get it leak checked. Quote Link to comment Share on other sites More sharing options...
stamar Posted January 27, 2014 Share Posted January 27, 2014 I had two both vw vans they both had an oil temperature guage. The 68 was owner added and it had a huge external oil cooler Im pretty sure the 80 was stock. When it started to get hot it wasnt going to cool down until you pulled over Even to suggest that vw vans didnt overheat shows you have never had one. The reason people bypass the radiator is it heats up the fluid. It has a thermostat. Many people with temp guages show in their purpose it cools more I dont think i this case it will but well need a trans temperature guage installed to be sure Quote Link to comment Share on other sites More sharing options...
Odyssey 4x4 Posted January 29, 2014 Author Share Posted January 29, 2014 A quick update. Today I got the head and block bare and clean... And a transmission pulled... Next stop is the machine shop and ordering parts. Quote Link to comment Share on other sites More sharing options...
stamar Posted January 29, 2014 Share Posted January 29, 2014 Well I envy your soon to be reliable 22re. Mine is getting older and worries me. Quote Link to comment Share on other sites More sharing options...
Odyssey 4x4 Posted January 29, 2014 Author Share Posted January 29, 2014 Well I envy your soon to be reliable 22re. Mine is getting older and worries me. I figured since going through nearly every other system in the truck, I might as well make sure the engine is tip top for a long upcoming travel. I look forward to hearing it purr along. Quote Link to comment Share on other sites More sharing options...
5Toyota Posted January 29, 2014 Share Posted January 29, 2014 when did toyota start using a plastic raditor my 86 dolphon and 87 4 w d have all brass units Quote Link to comment Share on other sites More sharing options...
Odyssey 4x4 Posted January 30, 2014 Author Share Posted January 30, 2014 It appears my radiator is not factory. Quote Link to comment Share on other sites More sharing options...
chefdave Posted January 30, 2014 Share Posted January 30, 2014 Hi my rad on a 1989 v6 dolphin 21ft is all metal. think your rad might be a post 1992/3. This seems to be when it changed for replacements. Quote Link to comment Share on other sites More sharing options...
Odyssey 4x4 Posted February 6, 2014 Author Share Posted February 6, 2014 Time for an update with lots of pics and lots done... I started on this day with removal of my tail shaft extension housing. Much easier when the Transmission is out of the truck Lets get this thing started... Looks like my gasket held up...removal with a few taps. CAREFULLY tap the end piece off... This seal is hard to get off without damaging so I just used a screwdriver to pry it out, this is the cheap seal anyways. Here is the extension housing bushing, notice you can see where it is already getting hot in certain spots. This has to be from the lack of flowing radiator fluid through the cooler (which I confirmed did move just a tad amount of fluid through.) Then very carefully we drove the bushing out from the back side, it is crucial not to nick or scrape the internals of the extension housing where the bushing seats. The next step of the day was fixing the crimped radiator atf fluid cooler line... A blowtorch and some wrestling with a screwdriver and pick...(soaked the rag in water and hit with short bursts of heat) and a file and some sand paper later... Flare the ends a bit and that should have it, also confirmed flow through without any leaks inside. The next project of the day was removal of the transmission fluid pan. Unfortunately, 2 of the 14 bolts broke upon extraction. The small screen you see is the fluid filter that will be replaced. Quote Link to comment Share on other sites More sharing options...
Odyssey 4x4 Posted February 6, 2014 Author Share Posted February 6, 2014 Now for the extraction of the broken bolts... This is what we started with... Started with a very small drill bit and bit right into the exact center of the remaining bolt in the threads. Dip the drill bit in transmission fluid to keep in lubricated. After one bit is completely through, we moved up a bit size and repeated the process, careful not to hit the threads. This is why it is crucial to stay centered. This is the type of thing that makes you nervous. You want to get the biggest drill bit through as you can without hitting the threads, this weakens the remainder of the bolt stuck inside. Once ready, we went in with our easy out. That's what I like to see... It couldn't have gone better. Now I just have to wait for parts. All of my engine parts are in and the block and head are ready for pick up. But we still had daylight so we found something else to do, let's figure out why the generator is running a tad rough. I've read that carb on the Onan Microlite 2800 is not possible to rebuild, only replace. Let's see what it looks like. Disconnected the lines, power, fuel lines, and bolts securing it in place, and slide the entire generator out. We then pulled the cover off of it. Yup that looks like a generator. Might as well replace the fuel pump while it's out, it could be the cause of the problem. Hello little carb. Carb out, bowl off... Now that is A LOT of trash in there... Plenty of gunk down in the seat. Ready for a good cleaning...no need to replace a carb just because it's dirty. Take that Onan. It will get a complete cleaning in the parts washer, new oil/spark plug/fuel pump and filter, and I bet she will run like new. It ran prior, just not how it should. I also climbed under my truck and saw that it still has the factory airbags, I'm gonna need to look up the part number for replacement bags and lines. That was it for the day. Plenty of fun! I'll be assembling the motor next week. Let me know what you folks think, I took all these pics just for you! Quote Link to comment Share on other sites More sharing options...
Odyssey 4x4 Posted March 10, 2014 Author Share Posted March 10, 2014 Update, The motor has been completely built and has been running great through 3 tanks of petrol. I had my machine shop resurface the head and block, as well as bore and hone the cylinders (.50 over). I also installed an RV camshaft and had the proper springs put into my head. Everything went back together great and it runs awesome. Between the camshaft and bore, I certainly feel a slight boost in power and it cruises much nicer at around 55mph. The transmission had the new screen installed and the rear extension housing bushing replaced. Here are some pictures for fun... fresh from United Speedworld in Tampa, FL Ready to roll. All new seals, freeze plugs, engine components, timing chain, water pump, oil pump, gaskets, bearings, camshaft, etc. After an install and hooking everything up, the timing was adjusted as well as valve lash according to the FSM. The engine is driving great and I am continuing to put miles on it to break it in before I leave for an extended trip living in it while I travel across the US. Quote Link to comment Share on other sites More sharing options...
MontanaChinook Posted March 10, 2014 Share Posted March 10, 2014 Looks great! I love the feeling of having a new engine, especially since I pretty much never own vehicles newer than 20 years old. Quote Link to comment Share on other sites More sharing options...
Odyssey 4x4 Posted March 10, 2014 Author Share Posted March 10, 2014 I agree, it gives a satisfaction to mind knowing you touched every part and bolt rather than wondering what could be going on inside of that engine from the past years of use and previous owners. Quote Link to comment Share on other sites More sharing options...
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