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Old 11-20-2002, 03:02 PM
Registered User
Join Date: Feb 2002
Location: Providence, Rhode Island
Posts: 8
My 84 300SD transmission needs help.

The other day, when the traffic light turned green, I stepped on the accelerator of my 84 300 SD, (198,000 mi), and it was as if it were in neutral.

With a little revving it dropped into drive with a clank.

Then, it did it again yesterday.

TODAY, after I first started it up, it jerked repeatedly in reverse, and after I let it warm up for a few minutes and drove off, the transmission made a LOUD scraping noise, ( it sounded like a metal on metal disc brake dragging noise coming from inside the transmission ), until it shifted into 4th gear when everything was fine and smooth.

I have a several options here. ( I have a nice warm shop to work in.) But I'd like to ask for your advice first.

1) Should I drop the transmission pan and have a look at the fluid? It seems to me it may be a little late for a fluid and filter change.
2) I have a 77 300D (non turbo) sitting in the backyard. Can I take the transmission out of that and install it in the 84 300 SD without too much fuss (modifications)?
3) Where should I send the SD transmission off to be rebuilt?
4) Is there a place or a person here in the Providence, Rhode Island area who can work transmission wonders?

I'm going to pull 'Super-Otto' into the garage tonight and have a look.

Any advice would be greatly appreciated.



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Old 11-20-2002, 04:54 PM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
The 1977 trans would bolt up BUT wouldn't work correctly OR last long at all. Also driveshaft length would be a problem.
Try removing pan & have a look-see at the fluid. Maybe you are lucky!
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Old 11-20-2002, 06:39 PM
Old Deis
Posts: n/a
Unfortunatley I had very similar symptoms with the trans on my 81 300SD a few weeks ago. I dropped the pan and found some chunks sitting there. Tranny shop told me to forget about a rebuild unless I had an unlimited budget for that.
I replaced the trans with a rebuilt exchange from Sun City Hydraulics in CA. Found their info in some threads here. They offer a rebuilt with a two year warranty. Shippped in and left a big crate to return the core. Fast delivery.
Not a bad job to replace that trans, but it does take more time as usual with the MB. Just a few more bolts to undo. You will just adore those two bolts on top of the trans. Get a long extension and a good 17mm swivel.
I think the torque convertor let loose on mine. When I drained it and had removed it, it rattled when shaken. Don't believe that is supposed to happen. I had been following anther thread where the MB owner reported that happened to him. The convertor let some crap loose and it was pumped into the trans, good bye transmission.
Good luck.
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Old 11-20-2002, 10:34 PM
crx crx is offline
Registered User
Join Date: Oct 2002
Posts: 39
yep take off the oil pan see if there are any parts in there if not, then take off the driveshaft check the spline it could be that too (that happened to my car just last week)
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Old 11-21-2002, 03:58 PM
Registered User
Join Date: Feb 2002
Location: Providence, Rhode Island
Posts: 8
M.B.DOC- Thank you for your prompt reply to my post.

Too bad the '77 transmission won't do. I don't know what you mean by , 'Maybe you are lucky!', but I guess I'll find out when I drop the pan. (Maybe there's a coupon for a free new MB in there?)

Old Deis- I have looked for HOURS but I haven't been able to find anything anywhere by the name of 'Sun City Hydraulics' that has anything to do with automobile transmissions.
Perhaps I don't know how to use the searches properly.
I'll bet you're right that it's the torque converter, though. The fact that the car makes scraping noises in neutral, reverse,1st, 2nd and 3rd, and no noise at all in 4th makes me go, "Hmm...".
I'll bet my torque converter will rattle when I have it out, too.

crx- We'll see what's in the pan. And what's up with the splines. And all the little rubber things that wear out in 198,000 miles...

So..... if you guys could help me find 'Sun City Hydraulics' , I think I'll be set to go. Then there's always this transmission on ebay....
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Old 11-21-2002, 05:24 PM
Old Deis
Posts: n/a
They go by another name on the website. Sorry bout that. Just call Peter at 818 768 8667. I think they show up as some Mercedes Dismantler or something. I got the referal by searching under 'transmissions' here, and one of the members gave their address on the web.
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Old 11-21-2002, 08:32 PM
Registered User
Join Date: Feb 2002
Location: Providence, Rhode Island
Posts: 8
Thank you, Old Deis! I found the web site. It's:

I'll let you know how it goes!

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Old 11-21-2002, 11:33 PM
Posts: n/a
I found this in my transmission pan @ 244,700 miles:

Didn't notice any difference in shifting before then to present. Looks like a part of a torrington bearing to me. The transmission still shifts flawlessly, I guess it was an extra part it didn't need
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Old 11-22-2002, 02:05 PM
Registered User
Join Date: Feb 2002
Location: Providence, Rhode Island
Posts: 8
Well, I got a price for the replacement transmission delivered from, and today I've left the car at Bob's Jefferson Getty on Jefferson Boulevard in Warwick, Rhode Island for an estimate on a rebuild or replacement.

It's not that I'm shopping around for a price, it's just that I'm not keen on doing a job like this myself with the car up on jackstands. I've done my share of old Saabs, but the engine/transmission unit on those hoist out from above.

We'll see what Bob says, and 'turbodiesel', Bob promises me a handful of metal shards from my pan which will put your measley little shard to shame.

He seemed surprised that the transmission startred doing this so suddenly. (I wanted to point out that the shifts have been a little erratic from the time I bought the car in June.) He also said that I was lucky that the car dropped into drive again at the stop light when this latest episode started the transmission making the 'metal on metal' scraping noise in every gear except 4th.

So...I'll keep you informed. It seems to me that either or Bob's Jefferson Getty are both safe bets in the $1400 to $2100 range.

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