Transmision rebuild under way!
#26
Nope, it doesn't carry any power at all. It acts as a spigot bearing to the nose of the input shaft, it channels oil to the TCC piston, and acts as the TCC Piston guide.
The power is carried by the TC turbine, which sits on the input shaft splines. That's the case whether the TCC is engaged or not.
The teeth on the piston guide only engage with the TCC piston, which rotates with the impeller, not the turbine.
Nothing like that would survive engine torque if it was made out of aluminium.
Nick
The power is carried by the TC turbine, which sits on the input shaft splines. That's the case whether the TCC is engaged or not.
The teeth on the piston guide only engage with the TCC piston, which rotates with the impeller, not the turbine.
Nothing like that would survive engine torque if it was made out of aluminium.
Nick
#27
In the picture below, the TCC piston guide is the blue part that sits on the end of the input shaft at the extreme left . The purple TCC piston sits around it, and acts on the TC clutch.
Nick
Nick
#28
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1956 Oldsmobile 98 Holiday, 2006 AMG S55, 2016 Toyota Camry Hybrid XLE
Glad to hear! The way he described it that piece is aluminum and ovals out after time and then there is pressure loss so you have sluggish converter engagement and weak shifts.. shifting at high RPM before was horrible it felt like it took a couple seconds to fully shift and now it shifts like a monster.. totally positive now.. also the car no exaggeration feels like it picked up an extra 100 or more HP.. however a lot of that may be the 2k stall.. anyone who has had a higher stall in a car knows how amazing it is.. more than one could ever imagine until driving one.
#29
I really thought the picture was an aluminum part that SHOULD have been made of steel. And shows that someone does not know the material that should have been used. We the consumers are then stuck with the junky designs. In the old days the only aluminum parts in an automatic transmission where servos and pistons, not driving members with in the transmission. Then of course they wanted to make things cheaper, yeah cheaper should not be in the Mercedes manufacturing manual. Since it is a top dollar car.
The reason for using aluminum is weight savings and potentially machining costs.
#31
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1956 Oldsmobile 98 Holiday, 2006 AMG S55, 2016 Toyota Camry Hybrid XLE
Well I can tell you this at first the tranny is all confused but it learns surprisingly well.. before it would shift in the converters slip which was horrible and now it knows to wait.. now it feels like it was designed for the converter and when you get on the gas get ready!! It's like being strapped to a rocket!
#33
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1956 Oldsmobile 98 Holiday, 2006 AMG S55, 2016 Toyota Camry Hybrid XLE
Yes, the guys with the converters said the TCU defiantly helps, but you should have them reprogram your TCU for the converter for best results.. Thats what seemed to be general consensus.
#34
how far back are the "old days"? Automatic transmissions have had aluminum cases and valve bodies since the 1950s and steel is actually a lot cheaper than aluminum alloy, not more expensive.
The reason for using aluminum is weight savings and potentially machining costs.
The reason for using aluminum is weight savings and potentially machining costs.
#40
#41
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From: California
93 500E, 95 E300D, 2000 ML320, 87 300TD, 91 300TE 4Matic, 95 E320 Cabriolet, 71 250C, 64 190
We are still waiting for you to bring your car into our shop. Even if it is now out of warranty, we will still correct any issues at no charge.
#43
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'06 MB S55 AMG; '04 Audi Allroad 4.2; '05 BMW M3 Conv.; '92 MB 500E
Yes, Marc at SunValleyMercedes is a wonderful soul... which is why he’s been so successful rebuilding these transmissions for so long... contrary to popular belief, the nasty sharp elbowed crowd never prospers for long.
Cheers,
maw
Cheers,
maw