Four-speed manual Transmission Rebuild - Page 8 - PeachParts Mercedes-Benz Forum

charmalu · #**106** 01-23-2009, 09:12 PM

You have been fiddling around with this transmission now for a month. I know by reading the previous posts you don`t want to pull a used trans from the JY, for fear you might just have the same problems.

Just because a car is in the JY, PNP, what ever, doesn`t mean all the parts are bad. I pulled one last yr out of an 83 240D with 223000 miles. nice and tight trans. think I paid around $80.

By the time you get this output shaft resplined, you are going to be putting some big bucks into it.

Pull your self a used transmission and get your car going, and you will be ahead of the game. then you can do what ever you want to the broken one at your leisure.

Maybe some of the forum members with in, say 150 mile radius could look in their PNP`s and locate one for you. I know I see these at our 3 pnp`s often.

Charlie

JEBalles · #**107** 01-23-2009, 10:10 PM

Yeah, I've already accepted that fact. I ordered a transmission from a forum member yesterday, so that should come during next week and I can get the car back on the road. I was wondering what I should do with my current transmission, if I should try to repair it and keep it as a spare or something.

charmalu · #**108** 01-24-2009, 03:59 AM

well hang onto it, you never know when you might need some part out of it.
Keep it, and you never will need a part. toss it and something will come back to haunt you

.

I`ve got all kinds of Mb parts and stuff I have draged home from PNP. ya just never know. engine, 2 trans, 2 diff. starters..... it never ends.

3 Nissan diesel eng. 3 extra trans. hoods fenders, new IP. 2 new Diff..... and the list for it goes on and on and....

This transmission will be the begining of your MB treasures.

Charlie

JEBalles · #**109** 01-24-2009, 09:56 AM

Well, I'm buying an older model transmission, so I don't know how many parts will be interchangeable, that's why I wanted to repair it. I have a one-piece aluminum case and I'm buying a two-piece steel case. This site has a great picture of what spray welding does http://www.altamontspraywelding.com/

JEBalles · #**110** 01-24-2009, 09:57 AM

I don't want to throw it away.

JEBalles · #**111** 01-24-2009, 01:41 PM

Another thing, separate from the transmission, what else should I replace on a 240D with 250,XXX miles? I read about water and oil pumps exploding and electrical fires. I take this car on long trips and don't want to be stranded. I've only had the car for a few thousand miles and I only have records back to 190,XXX miles and so far there's been exhaust replacement 190,XXX miles and some hoses done here and there and then brake work done recently, pads, sensors and lines.

Stevo · #**112** 01-24-2009, 03:28 PM

Thats a tough question, lots of stuff could die, but the up side is, with the 240 you can take care of most of the impending problems yourself. My 79 with 240+K had lots of problems but the body wasn't bad and we liked the color. What i did was get a blown 616 and started slowly rebuilding it then swapped it in. It cost me $1500 but I have a car thats fun to drive, looks nice and doesn't break down all the time.

charmalu · #**113** 01-24-2009, 10:42 PM

There are a couple differences between the aluminium one piece and the old iron case two piece trans.

The iron box has the 3 levers pointing straight up, while the aluminium box has two levers pointing down, 1-2 and 3-4. with reverse pointing up.

So the shift rods might not have the same bends, and you will have one shorter rod for your reverse from your old box.

See if you can get the shift rods from the person sending you the replacement box.

Charlie

JEBalles · #**114** 01-24-2009, 11:36 PM

Yep, I already considered that and I did ask for the shift rods.

JEBalles · #**115** 01-24-2009, 11:39 PM

And, Stevo, I don't think I want to do that, but the previous owner said the engine is in great condition and I've taken it on a couple 200 mile trips with no trouble and people are saying that this spline trouble was kind of an odd fluke. I'm just wondering if maybe there is a way to check to see if something might bust on me.

Stevo · #**116** 01-25-2009, 12:47 PM

Quote:

Originally Posted by charmalu

There are a couple differences between the aluminium one piece and the old iron case two piece trans.

The iron box has the 3 levers pointing straight up, while the aluminium box has two levers pointing down, 1-2 and 3-4. with reverse pointing up.

So the shift rods might not have the same bends, and you will have one shorter rod for your reverse from your old box.

See if you can get the shift rods from the person sending you the replacement box.

Charlie

Theres also a couple of differences in the "iron case' trannys. In my 79 the center shift lever (in nut) was streight up and the 1980 (still 2 piece) the center lever was fwd about 20 degrees (in nut). How the levers attach is also different. In that case I had access to a welder and lengthened the center shift rod 1&5/8 inches when I installed the 80 engine and tranny into my 79. The last time I ran into this I swapped side plates. (no welder, no time and no center rod from the wrecking yard)

charmalu · #**117** 01-25-2009, 01:20 PM

Quote:

Originally Posted by Stevo

Theres also a couple of differences in the "iron case' trannys. In my 79 the center shift lever (in nut) was streight up and the 1980 (still 2 piece) the center lever was fwd about 20 degrees (in nut). How the levers attach is also different. In that case I had access to a welder and lengthened the center shift rod 1&5/8 inches when I installed the 80 engine and tranny into my 79. The last time I ran into this I swapped side plates. (no welder, no time and no center rod from the wrecking yard)

Good to know. I do have two shifters, but the car that had the iron case, someone removed the shifter. now Iam not sure what the second one is.
Have to do an inventory of my Junk.

But I do have all the parts from the 83 240D.

Charlie

Stevo · #**118** 01-25-2009, 01:42 PM

Quote:

Originally Posted by charmalu

Good to know. I do have two shifters, but the car that had the iron case, someone removed the shifter. now Iam not sure what the second one is.
Have to do an inventory of my Junk.

But I do have all the parts from the 83 240D.

Charlie

I believe the shifters are all the same for either "iron case" or "one piece", 4 spd trannys, in the 123s anyway.

mbgizwiz · #**119** 01-25-2009, 05:59 PM

I have a '78 240d that I bought a couple of years ago. I could tell by the sound it made when I test-drove it that it had a transmission problem, and diagnosed it as a bad countershaft bearing. I was feeling adventurous, got a fair price, and drove it home.
By a stroke of luck, I spotted a used trans on craigslist, bought it for $80, and that solved the problem. Both transmissions were the iron two-piece type, but I still had to swap the side plates to get it to work with my car's shift rods. The old ones were forged, the others were stamped and formed, and if I remember correctly, the center one was at a different angle and went with a rod of a different length that I didn't have.
Later I took the noisy trans apart and found that - sure enough - a countershaft bearing was bad. This is a standard part that I can buy from a bearing house for peanuts.
But that trans is still apart and in a box, waiting to be needed.
I just came across this thread, but am glad that you are getting a replacement transmission. Fixing that spline is something that you might have to do if your car was a Bugatti Royale, but there are lots of old Benz transmissions out there still, and I'm sure that's a better way to get back on the road.

JEBalles · #**120** 01-25-2009, 08:42 PM

Yeah, wow, that's exactly what my dad said, only he specified a year for the Bugatti.