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#1
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Thrust spacer wear in 722.3 trans excessive?
I've disassembled most of 2 722.3 transmissions (still have to do the clutch packs and planetaries) The two units have failed for different reasons, but one thing seems similar on both - the shims used to set the axial play for the K1 and K2 clutches on the input and output shafts have really taken a beating. A few are in pieces, most of the rest were burned, split or galled. I certainly don't know much about automatic transmissions (having only rebuilt 1 before), yet this surprised me. Is this typical for these units, or not?
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'82 300SD - 361K mi - "Blue" "Good judgement comes from experience. Experience comes from bad judgement." listen, look, .........and duck. |
#2
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NOT UN-COMMON at all! about 25% of the ones that I've have had a simular failure.
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#3
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Thanks! any suggestions to minimizing a reoccurance of that? Use as few spacers as possible to adjust the play? Use mobil 1 or an oxidation additive? Set the play closer to the lower limit?
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'82 300SD - 361K mi - "Blue" "Good judgement comes from experience. Experience comes from bad judgement." listen, look, .........and duck. Last edited by Pete Burton; 08-02-2005 at 08:41 AM. |
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