How to tell if Trans is good? - PeachParts Mercedes-Benz Forum

Jim Sutton · #1 02-04-2009, 08:43 AM

So my engine rebuild is just about complete on my 84 300sd. I am getting ready to turn my attention to the trans.

I have a trans out of a 83 300sd that according to the odometer only had 77000 miles on it (owned by a old man that only drove it on sunday, etc.)

I plan on using it with my rebuild, my current trans has 238000 miles on it.

I have never seen it work.

How do I determine if it is good and just how much work I should put into it?

As a min I figured fluid, and pan gasket and new modulator.

Should I just rebuild the whole thing?

rs899 · #2 02-04-2009, 09:57 AM

Are you SURE it only had 77K miles on it? Don't trust odometers on these things...

If you are sure it only had 77K, I would use it as is. BUT- I would reseal the front pump and TC seal , at a minumum. If it sat for many years unused, I might think about rebuilding, because clutch pack seals can get hard etc.

Personally , I would really like you to rebuild it ( and do it before I rebuild mine)

Rick

oldsinner111 · #3 02-04-2009, 10:05 AM

Put the K1 spring,and B1 piston kit also.

rs899 · #4 02-04-2009, 10:13 AM

I think oldsinner means B2 piston (which was problematic)rather than B1. Those have gotten awfully pricey....I am going to just trust my luck when I rebuild. Anything I can get to without having to pull the tranny I figure can break, if it so desires....