maozebong Posted November 21, 2015 Share Posted November 21, 2015 im looking for the FSM section about the 3at. i recently acquired a 76k mile loyale 3AT 4WD, and i want to clean out the governor valve, replace the vacuum modulator (have a new one on hand) and completely flush the fluid and clean the filter screen afterwards. later, plans are to add a very large cooler, and experiment with how long it can hold up to big tires and off road abuse, and potentially reworking the valve body to deal with it. highway cruising speeds with the 3at are about the same rpm as what i ran my 5spd at in 4th gear with 215/75/15 tires, so i feel like it holds the engine in the powerband where it needs to be to run large tires at highway speeds. iirc, they held up the power of some turbo models, and similar variants of the jatco 3AT were put on nissans and mazdas with much more power than a spfi EA82. its possible they have torque converters that might interchange with a higher stall speed too. if it doesnt end up working out, ill be looking into a 4EAT swap, or possibly a full drivetrain swap from a 4.44 ej powered vehicle. the car is being built for a mini 4x4 camper, with sleeping platform, auxilary battery and inverter system, propane mini heater, curtains, accent lights, etc etc. i figured having the FSM section on hand might help, and the PDF of the 89 ea82 FSM doesnt include it. otherwise i might order a chilton or haynes manual. anything on the 3at was on the old usmb and doesnt exist anymore, the governor cleaning procedure isnt even up anymore. anyone have any input on this? avoiding these transmissions like a plague just because some people are scared of the red oil is kinda dumb. they are about as simple as automatics get, honestly. thoughts? Quote Link to comment Share on other sites More sharing options...
Crazyeights Posted November 21, 2015 Share Posted November 21, 2015 Take the three small bolts out of the govenor housing, remove unit to clean and inspect the gear, and re-install. Not much to it and no fluid loss. Quote Link to comment Share on other sites More sharing options...
maozebong Posted November 22, 2015 Author Share Posted November 22, 2015 ive seen the discussion on the few posts left, about the pull/clean/reinstall on it. seems straightforward. im more looking for the rest of the ea82 service manual. the current pdf cuts off after the wiring section. if i have to buy it, does anyone know where i can get the complete FSM? Quote Link to comment Share on other sites More sharing options...
DaveT Posted November 22, 2015 Share Posted November 22, 2015 I have both complete, an 86 and a 90 fsm. There is a difference in final drive ratios. I also have 3ATs transmissions from 88,89,90,92,93. They are the same, except the earlier ones have a different shape to the pan. The main part that seems to wear out is the pump drive shaft. Watch ebay for a real fsm is the best bet, I think. I recently bought parts from Subaru. Some are no longer available. There is a rebuild kit that is great, even has both versions of the pan gasket. It's not cheap, but it has all the little seals and stuff, including a few items that are no longer available separately. Quote Link to comment Share on other sites More sharing options...
silverhelme Posted November 22, 2015 Share Posted November 22, 2015 You're right, the links to the governor repair is dead. We have lost so much over the years as far as info. For highway use if it is well cared for it will probably last a while. For off road use I doubt it will hold up all that long although it might hold up for a while. Besides the governor and the oversize cooler be sure and adjust the 2-3 band correctly. I like the 3AT and personally have had good luck with them including running one behind a 2.2 in my Brat for the past year. Quote Link to comment Share on other sites More sharing options...
maozebong Posted November 22, 2015 Author Share Posted November 22, 2015 I think this 3at hasnt been too abused, it had one owner before the one owner parked it from bad intake gaskets. Shifts are clean and stall test seems to be okay as well (2200rpm in d). I myself am a master mechanic, so maintanence will be about as good as it gets. although AT's are not my specialty, i know enough to rebuild and diagnose various issues as well as pass the transmission ASE test. I replaced my vacuum modulator late last night. shift points are too low now, all before 20mph, i didnt feel like digging further. hopefully fiddling with the tiny screw inside the modulator will fix that. Quote Link to comment Share on other sites More sharing options...
DaveT Posted November 22, 2015 Share Posted November 22, 2015 I have had that same thing, new aftermarket modulator shift too soon. I've been driving them for years,using the shifter to allow up shifts when I want them. I've put over 200 miles on a few 3ATs. Watch the spline on the pump end of the oil pump drive shaft. They strip out. Quote Link to comment Share on other sites More sharing options...
maozebong Posted November 22, 2015 Author Share Posted November 22, 2015 Do you have any pictures of what you speak of? Thats quite the peculiar hard part to fail, but im sure its quite long, stretching through the differential. Quote Link to comment Share on other sites More sharing options...
DaveT Posted November 23, 2015 Share Posted November 23, 2015 It's about 2 feet long. I have pictures on a thread about 3ATs on this forum. Quote Link to comment Share on other sites More sharing options...
silverhelme Posted November 23, 2015 Share Posted November 23, 2015 I have seen the oil pump shaft fail once myself. The trans is really simple and reminds me of a Ford C4 reversed without the rear ( front? ) pump. The modulator can be adjusted via the screw you referenced to help tune your shift points. Quote Link to comment Share on other sites More sharing options...
Kristina Posted November 23, 2015 Share Posted November 23, 2015 More details on adjusting the vacuum modulator would be great. My wagon shifts up to third ridiculously fast. The modulator was blown when I bought it so it was the first thing I replaced. Good to know it's adjustable. Is it a fine adjustment or will I have to really turn that screw to make a difference? 1 Quote Link to comment Share on other sites More sharing options...
maozebong Posted November 23, 2015 Author Share Posted November 23, 2015 DaveT, i have found those threads but the pictures are broken. Most of the 3at info on this board references broken links to the old usrm, and other sources... Doesnt help that the original person who scanned the 88/89 fsm left out the transmission and differentials sections. I have scoured identifix, alldata, prodemand, and iatn, and the best i have found is a valve body exploded diagram.(also got detailed interior electrical diagrams!) None have much if any info on the transmissions. Anyone know the band adjustment procedure? I noticed slight 2nd gear slip this morning when i accidentally took off in 2nd. Quote Link to comment Share on other sites More sharing options...
maozebong Posted November 23, 2015 Author Share Posted November 23, 2015 More details on adjusting the vacuum modulator would be great. My wagon shifts up to third ridiculously fast. The modulator was blown when I bought it so it was the first thing I replaced. Good to know it's adjustable. Is it a fine adjustment or will I have to really turn that screw to make a difference? To increase the rpm of the shift points, turn the screw in clockwise (with vacuum modulator removed, its easy to break the brass screw in it if youre coming from an angle). If im not mistaken, each turn increases shift points about 3-400 rpm, or at least it did on mine. I like mine higher and line pressure to be higher (less slip on gear change) so i set it for 3750. I had to turn the new one in ~5 turns on mine. 1 Quote Link to comment Share on other sites More sharing options...
DaveT Posted November 23, 2015 Share Posted November 23, 2015 I'll have to look tonight, or repost the pics I put on my thread. Quote Link to comment Share on other sites More sharing options...
DaveT Posted November 24, 2015 Share Posted November 24, 2015 I added a picture of the drive shafts on my other 3AT thread. The other pics seem to be working. Quote Link to comment Share on other sites More sharing options...
maozebong Posted November 24, 2015 Author Share Posted November 24, 2015 Thanks for that, its such a curious wear but the shaft is pretty skinny, so that doesnt help. This one in my new wagon is thankfully low mileage and the pump shaft probably isnt too bad yet. Ill just do my aforementioned maintenance and keep rolling with it in the project. Quote Link to comment Share on other sites More sharing options...
silverhelme Posted November 24, 2015 Share Posted November 24, 2015 I have the fsm for an '84 but don't know how to get it to you. It has all the info you are looking for. It is just to big to attach. Maybe I could Email it to you. Quote Link to comment Share on other sites More sharing options...
Kristina Posted November 25, 2015 Share Posted November 25, 2015 I PM'd you a link to an '83 FSM. EA81 instead of EA82, but the tranny stuff should be the same. Quote Link to comment Share on other sites More sharing options...
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