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Re: Ultramatic Rebuild
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Can you provide some more information on the condition?
Do you mean by "momentarily loses flow when accelerating" that the rate of acceleration drops and then resumes when there is no change in throttle? Since it is leaking, have you filled it before the drive when the problem occurs? Following a drive when the problem occurs, how low has the fluid level dropped? Do you have the temperatures both when it works and when it has the problems? Once the problem occurs, does it occur every time thereafter? When the problem is occurring accelerating from a stop, what happens if you back up, stop and then accelerate forward? Does the problem occur in both High and Low? Was Direct Drive engaged before slowing or stopping before the problem occurs?
Posted on: Yesterday 17:25
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Re: Ultramatic Rebuild
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I am assuming you will be using a transmission jack or dolly. If the transmission is supported by the pan it's 17" clearance plus the height of your dolly. The thing weighs like 260 lbs so don't kill yourself trying to get it out. Definitely not one to drop on your chest etc.
Carefully read the removal instructions as you have to support the engine when removing it and it can be tricky to do with the engine in the car. If you can, pulling the engine and trans out as an assembly after removing the front clip is not much harder but much safer IMHO. For your condition, you should be able to tell when the DD engages, and therefore whether it's the DD clutch slipping or something else. It pretty much has to be that if you notice it after the engagement. If it's before, it's probably your HRC but it's also possible there is some problem with your reactor not locking up all the way, though that's uncommon especially on the first gen Ultras. Please describe in detail exactly what happens when you say "losing flow"? P.S. I agree there's really no point in transmission swapping the first gen Ultra cars, even more so than for the Twin Ultras. There's really hardly anything that tends to go wrong with them as pretty much the only thing the transmission does is engage and disengage the DD clutch. 
Posted on: Yesterday 18:09
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Re: Ultramatic Rebuild
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Quote:
1) It acts like it's starving for fluid, like it is low. Or that the governor and throttle valve are not working together they way they should. I'm not very knowledgeable about my Ultramatic...................yet! 2) Fluid level is good and checked using the service manual's procedure. 3) No, other than the leaks, fluid level is okay. Thought maybe foaming might be the issue, but I don't think it is. 4) Don't have actual temps, but it has never happened on shorter trips, like under an hour. It seems to occur after driving longer and on a warmer day. 5) No, we did a 400 mile trip in June and it probably only happened 3 times. 6) Haven't tried this. 7) Not sure, haven't tried to see if it happens in low. I don't really use low. 8) That's a good question. It hasn't happened enough that I'm able to determine what has happened and when. I've had the pan off and the screen is clean, so I think it should have okay flow through the filter. I don't get the sense that something is drastically wrong, like it's about to crater and leave me stranded. My thought behind rebuilding one of the transmissions is I don't suspect either have been rebuilt and getting new seals in them, and disks that are good with modern ATF, should keep me from ever having transmission issues.
Posted on: Today 1:07
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Re: Ultramatic Rebuild
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I know these transmissions are heavy, so I'll be careful. I don't want to pull the clip and the engine as the care is stored in someone else's shed and needs to be a bit mobile so it can be moved if need be. It could be that there are sticky rings, or piston. Maybe worn clutch plates. Maybe an leak in the system allowing air to get in. I have noticed at times a whirring sound similar to a power steering system that has air in it. I think the most prudent is to rebuild my parts car's transmission, so that I know what I've got, and then do a swap next spring. I can rebuild it over the winter so I have lots of time for research and asking questions. Max Merritt lists an Ultramatic rebuild kit for $395, not a costly project relatively speaking. Does anyone know if MM's rebuild kits are okay, and if they are complete? They say, "KIT INCLUDES GASKETS, SEALS, BUSHINGS, AND HIGH RANGE FIBER CLUTCHES" But there's no picture and doesn't say anything about the piston rings.
Posted on: Today 1:43
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Re: Ultramatic Rebuild
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I discovered -> a more expensive alternative that includes a photo. image source: eBay item number:314112295244 Attach file:  53 Cavalier Ultramatic rebuild kit.jpg (272.02 KB)
Posted on: Today 2:35
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The story of ZIS-110, ZIS-115, ZIL-111 & Chaika GAZ-13 on www.guscha.de
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Re: Ultramatic Rebuild
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The transmission is transmitting whatever torque the engine is producing. If there is a transmission problem it will be signaled by the engine suddenly gaining speed as the trans is not able to hold the engine's torque. If that is not what is happening, then you do not have a transmission problem.
For general information as this seems to come up so often, Ultramatics are not very fluid level sensitive. A quart of down will not be noticed.
Posted on: Today 4:51
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