Re: Torque Converter Removal
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I drilled out the broken off cooler fitting and removed the oil tubes. Here are some pictures of the pump and bell housing. The issue is no direct drive clutch actuation though the test port pressure is within range. The converter shaft has the holes in the annular groove.
Any problems seen with mismatched parts? I notice the converter shaft is the upgraded 40 tooth but the pump rotor is 20. https://photos.app.goo.gl/5gtyR5dEyVafeFpk7
Posted on: 2019/12/29 19:03
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1942 Clipper Club Sedan
1948 Custom Touring Sedan (22nd Series) 1955 Patrician Sedan 1955 400 Sedan |
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Re: Twin Ultramatic oil cooler orifice
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Interesting. So the deletion of the orifice doesn't cause any pressure issues in the transmission?
Posted on: 2019/12/14 23:10
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1942 Clipper Club Sedan
1948 Custom Touring Sedan (22nd Series) 1955 Patrician Sedan 1955 400 Sedan |
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Twin Ultramatic oil cooler orifice
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I see that the upper fitting for the oil cooler lines on the transmission is a special orifice fitting. Unfortunately, mine broke and had to be destroyed to remove the stub. Does anyone happen to know what the orifice size is? I assume I can pick one up at a hydraulic shop, unless someone knows a better source.
Posted on: 2019/12/14 18:04
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1942 Clipper Club Sedan
1948 Custom Touring Sedan (22nd Series) 1955 Patrician Sedan 1955 400 Sedan |
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Re: Torque Converter Removal
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The service bulletin illustrates the original '55 front pump assembly with the clutch port on the face, and the revised '56 pump assembly with the clutch port internal to the pump into the shaft area. What isn't shown is the intermediate service replacement pump that required the holes be drilled into the converter shaft. It has a different part number per the bulletin but no description or picture. How is that pump different from the original '55 part? (The rotors are separate.)
Posted on: 2019/12/10 21:43
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1942 Clipper Club Sedan
1948 Custom Touring Sedan (22nd Series) 1955 Patrician Sedan 1955 400 Sedan |
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Re: Torque Converter Removal
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Am still left with a mystery as to why the direct drive doesn't work when everything so far seems to check out. I wish there were an Ultramatic expert in my locale.
Posted on: 2019/12/2 23:41
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1942 Clipper Club Sedan
1948 Custom Touring Sedan (22nd Series) 1955 Patrician Sedan 1955 400 Sedan |
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Re: Torque Converter Removal
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Nice video. Need more of those.
Looking down the inside of the reactor shaft aside from the splines for the center shaft all other surfaces appear smooth, including the bronze colored one. There is no sideways play on the reactor shaft at all. The old friction plate surface is hard. My fingernail doesn't dent it. As mentioned previously there's a new plate in there now but I'm not at all confident that will resolve the issue. As an aside, the case halves have a pliable O-ring seal, which is still round. The converter hasn't leaked. The one way clutch can be felt.
Posted on: 2019/12/1 16:02
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1942 Clipper Club Sedan
1948 Custom Touring Sedan (22nd Series) 1955 Patrician Sedan 1955 400 Sedan |
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Re: Torque Converter Removal
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Here's a thought.
The guy I bought this car from conveyed his belief that the reason for the lack of lockup was that he used the original friction plate due to it's lack of wear, and so had purchased a new one but hadn't got around to installing it. I assume the new rebuild clutch packs installed in the transmission used friction material that differed from original, to be compatible with more modern low friction hydraulic fluid. Could it simply be that the original direct drive clutch friction plate with modern fluid would slip so badly that the driver would not feel any engagement whatsoever? I've been assuming all along that one would feel something, but maybe not. Thoughts?
Posted on: 2019/11/30 23:50
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1942 Clipper Club Sedan
1948 Custom Touring Sedan (22nd Series) 1955 Patrician Sedan 1955 400 Sedan |
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Re: Torque Converter Removal
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Good suggestion. With a rubber tipped air nozzle on the test port, air flows freely. There's no pressurization. It feels like there's air coming out the front of the transmission but it's slight.
So the current situation is no direct drive clutch actuation in normal operation, the 40 tooth setup has the drilled holes. The clutch itself appears fine. Hydraulics on the test port indicate normal pressure at the right time when going down the road. Now there appears to be a clear path to the converter. What else could be causing the problem? If I slipped the torque converter onto the transmission and put air at the test port, should I be able to feel the clutch actuate, perhaps in how the converter spins? I imagine the air pressure would want to push the converter off the transmission.
Posted on: 2019/11/30 18:39
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1942 Clipper Club Sedan
1948 Custom Touring Sedan (22nd Series) 1955 Patrician Sedan 1955 400 Sedan |
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Re: Torque Converter Removal
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Looking at the front of the transmission, the bushing aft of the seal between the splines has holes in it. Are those the oil path for clutch via the annular groove drilled holes in the torque converter shaft and are they indicative of whether or not an appropriate pump is installed for the drilled 40 tooth torque converter shaft or does the bell housing have to be removed?
Posted on: 2019/11/29 15:54
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1942 Clipper Club Sedan
1948 Custom Touring Sedan (22nd Series) 1955 Patrician Sedan 1955 400 Sedan |
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