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Old 07-31-2008, 04:00 PM
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Join Date: Jun 2007
Location: San Luis Obispo
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B-2 Piston Sleeve Removal

I recently purchased a 1983 300SD with a transmission that would not engage into any forward gears but would go into reverse. After doing some research, it sounded like a problem with the B-2 piston. So I took it out and it unfortunatly was intact. The transmission apperars to have the original aluminum sleeve. I am going to install a new plastic sleeve but I cannot figure out how to remove the original one. In addition to replacing the sleeve, should I install the upgraded piston to avoid future issues?

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Old 07-31-2008, 08:02 PM
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if you change the sleeve, you HAVE to change the piston. they are different sizes.
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Old 07-31-2008, 08:43 PM
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Location: Spokane WA
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The sleeve comes right out after you get the seal out. Its a bit tricky getting the seal out but just takes some patients.
Replace the piston, sleeve and seal. Its much easier with the trans out but doable with it in also.
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Old 07-31-2008, 09:27 PM
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I will order the parts tonight.
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Old 08-01-2008, 01:18 AM
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Join Date: Jul 2005
Location: Atlanta Georgia
Posts: 49
Sleeve Removal

You might need to build a puller, mine was really stuck. I ended up using a fender washer that I ground two sides flat on so I could slide it in.

I just wonder if the B-2 piston is actually the problem, since you said it was still intact?
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Old 08-01-2008, 02:17 AM
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Join Date: Jun 2007
Location: San Luis Obispo
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The piston is worn pretty bad where it contacts the sleeve. I am hoping that it is binding. The car seems like it is trying to go forward when in drive.

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