PeachParts Mercedes-Benz Forum - View Single Post - 1984 300D Trans Rear Main Seal, anything else?

Stretch · #11 06-02-2011, 04:16 AM

Quote:

Originally Posted by Hit Man X

The reverse clutches are known to be the weak part of the .3 trans. They wear easily for some reason. They are known as the 'B3' there are four of them from what I can remember. They are right behind the pump.

http://www.bulkpart.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=2&Category_Code=722-3 All sorts of 722.3 parts

http://www.bulkpart.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=2&Product_Code=68110B&Category_Code=722-3clutch

The .1 is setup differently to engage reverse.

The rest of the seals I refer to are such as the input seal, pump pushing, servo seals, TV cable o-ring, rear seal, etc. All of the usual suspects for external leaks. I do not mean replace the o-rings on the inside.

Most of the leaks on my cars are from the pump/input seal.

Ah ha - close inspection of the 722.3 pdf I posted shows the B3 / reverse clutch on page 2 of the PDF. It looks like (from this picture) that there are a set of 5 clutches there.

I checked the 722.3 ATSG manual before posting my previous comments. At the front of the manual there's information concerning how each part of the transmission works for each gear selected. I'm guessing they've just copied the information in the 722.1 manual and been done with it as it doesn't mention this "extra" clutch at the front in that part of the book...