Author Topic: Intro & Shifter linkage Gear selector Issue 79 300SD  (Read 1312 times)

Jjutzy

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Intro & Shifter linkage Gear selector Issue 79 300SD
« on: 18 November 2018, 12:35 PM »
This is my first post here on the forum. I live in Gilbert, Arizona and have a new to me 1979 300 SD with about 350,000 miles. I’m starting to like this car a lot.

Anyway, on to the issue at hand. Long story short, shortly after I purchased the vehicle, I lost a Flex Disc while driving on the highway. Drive shaft flopped around, destroyed the shift linkage and bent the arm in the gear selector, which also obliterated the bushings. I replaced the bottom unit with a used one with good bushings and a straight arm. Sourced a linkage from a junk yard and replaced the linkage bushings. The vehicle now shifts, but for the life of me, I cannot get the gear selector to work properly. Park will not fully engage and I cannot get the selector all the way into Low. When I shift to Low, there is still about 1/2” to the bottom of the track. When I shift to P, the transmission disengages, but does not lock, basically goes into a neutral state. Is it possible that the linkage is not correct for my transmission? I have adjusted the linkage in all directions and just cannot get it right. Any tips or advice would be appreciated. I need to get the vehicle registered, but can’t take it in to get sniffed until I can place the vehicle in Park and not have it roll away on the technicians!

Thanks, look forward to participating here on the forum!
1979 300 SD 348,000+ Miles

Squiggle Dog

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Re: Intro & Shifter linkage Gear selector Issue 79 300SD
« Reply #1 on: 18 November 2018, 06:14 PM »
It's nice to see another 300SD owner in Arizona! It sounds like the shift linkage is not long enough. But, it could also be that it's placed in the wrong hole on the transmission. It should go into the forwardmost hole (where the bushing is in the pic).


Did that shift linkage happen to come from the 450SEL in the Phoenix Pull-N-Save North wrecking yard? If so, it's possible it's not the right length because it uses a different part number (116 260 07 33) instead of part number 116 260 43 33 that you need. I'd offer the one from the 280SE I'm parting out, but it's a different part number yet (116 260 06 33).

There's also a chance that your parking pawl in the transmission is broken or disengaged, but the shift linkage is obviously a problem and most likely the sole cause of it.
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1967 W110 Universal Wagon, Euro, Turbo Diesel, Tail Fins, 4 Speed Manual Column Shift, A/C
1980 W116 300SD Turbo Diesel, DB479 Walnut Brown, Sunroof, Heated Seats, 347,000+

daantjie

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Re: Intro & Shifter linkage Gear selector Issue 79 300SD
« Reply #2 on: 18 November 2018, 07:31 PM »
Welcome!  Phew you dodged a big bullet with that flex disk could have been a lot worse :o
Daniel
1977 450 SEL 6.9 - Astralsilber

Diesel 617

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Re: Intro & Shifter linkage Gear selector Issue 79 300SD
« Reply #3 on: 18 November 2018, 07:34 PM »
Welcome!

After blocking the wheels so the car wont roll. Climb under the car and manually engage the transmission into park by pushing the selector (in the photo above) all the way towards the engine. Remove the blocks and see if the car rolls. Can you drive the car in any of the other gears? This will eliminate and transmission woes.
1980 300SD Worn out Engine
1979 280SE Euro Spec Import Crank Windows and Cloth Seats, needs head rebuild, and WUR rebuild
1979 300CD


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https://www.ebay.com/usr/vintagepartsandstuff/

Jjutzy

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Re: Intro & Shifter linkage Gear selector Issue 79 300SD
« Reply #4 on: 20 November 2018, 03:43 AM »
Thanks for all of the replies.

Here’s where I’m at. I have identified the fact that’s i have the wrong linkage. The linkage I scavenged was from a pick n pull. I don’t recall what the model was that I got the part from, but it is definitely not the correct linkage. It is a one piece linkage and the 300 SD uses a two piece linkage. So, I’ve got a linkage on the way now from Pelican Parts. I’ll post some pics of the carnage and the parts and repairs when I get it all back up and running.

I incorrectly assumed that because the vehicle I pulled parts from was from the same era and had a Diesel engine, that it must have shared the same parts. Another lesson learned.

Now I just need to get it put back together so I can go find out if it’s going to pass the smog test!
1979 300 SD 348,000+ Miles

Jjutzy

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Re: Intro & Shifter linkage Gear selector Issue 79 300SD
« Reply #5 on: 22 November 2018, 01:38 PM »
So...
Pelican sent an email, a week after I placed my order, informing me they do not have my parts and have canceled my order.

Need to source a linkage. Any leads as to where to get my hand on one?

Here’s the linkage, post incident.

1979 300 SD 348,000+ Miles

Alec300SD

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Re: Intro & Shifter linkage Gear selector Issue 79 300SD
« Reply #6 on: 22 November 2018, 02:17 PM »
I just pulled  the upper oil pan from a 1980 300SD at the Oakland PNP on Veterans Day.

Row 52 shows it still being in the yard.
I'll check it out tomorrow and pull the shift rod for you if it is still present.

Any other bits you might need?
« Last Edit: 22 November 2018, 06:48 PM by Alec300SD »
79 W116 300SD 'Stormcloud' new as of 10/22/2017
78 W116 300SD 'Desert Rose' new as of 01/26/2014
83 W126 300SD 'Rena 2.0' with engine from 82 W126 300SD Rena' (SOLD and crushed 11-20-2017)

daantjie

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Re: Intro & Shifter linkage Gear selector Issue 79 300SD
« Reply #7 on: 22 November 2018, 03:00 PM »
In my experience these parts are by now all NLA new from Benz, of course you get lucky here and there.  You can try the MB Classic Centre in Irvine CA, they are great to deal with.  Other than that as said you need to source a used one from a wreck at the scrapyard or from members here with part stashes.  Also check ebay, sometimes you get super lucky on there.
Daniel
1977 450 SEL 6.9 - Astralsilber

Jjutzy

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Re: Intro & Shifter linkage Gear selector Issue 79 300SD
« Reply #8 on: 22 November 2018, 06:46 PM »
I just pulled  the upper oil pan from a 1980 300SD at the Oakland PNP on Veternas Day.

Row 52 shows it still being in the yard.
I'll check it out tomorrow and pull the shift rod for you if it is still present.

Any other bits you might need?



If it’s there, I’ll be forever indebted to you. The local yard with all the old Mercedes is not open any more. The owner died and his wife opens it every once in a while, but I’ve never seen it open. I’m tempted to jump the fence at this point!

At this time, I do not need any other parts. The linkage is all I need to get up and running.
1979 300 SD 348,000+ Miles

Squiggle Dog

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Re: Intro & Shifter linkage Gear selector Issue 79 300SD
« Reply #9 on: 22 November 2018, 10:37 PM »

If it’s there, I’ll be forever indebted to you. The local yard with all the old Mercedes is not open any more. The owner died and his wife opens it every once in a while, but I’ve never seen it open. I’m tempted to jump the fence at this point!

If you're talking about the one I'm thinking of, I heard that recently all the cars and parts were packed up in shipping containers and sent off to The Middle East. Their prices seemed high, anyway. I really miss all the yards that used to be on Broadway. Ecology was great and always had lots of old Mercedes (that they didn't know they had).
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1967 W110 Universal Wagon, Euro, Turbo Diesel, Tail Fins, 4 Speed Manual Column Shift, A/C
1980 W116 300SD Turbo Diesel, DB479 Walnut Brown, Sunroof, Heated Seats, 347,000+

Jjutzy

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Re: Intro & Shifter linkage Gear selector Issue 79 300SD
« Reply #10 on: 22 November 2018, 11:13 PM »
Squiggle, I’m talking about Tri-Star on Broadway. I was there two weeks ago. Yard is full. Gates are locked. Talked to the guys down the street and they told me that the old man that ran the place passed away and his wife had control of the business. They say that they open at random, but he hadn’t seen anyone there in months. I don’t know where else to find parts for my car. May end up having to have a machine shop make the linkage for me. Trying to avoid that hassle...
1979 300 SD 348,000+ Miles

Squiggle Dog

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Re: Intro & Shifter linkage Gear selector Issue 79 300SD
« Reply #11 on: 22 November 2018, 11:33 PM »
Squiggle, I’m talking about Tri-Star on Broadway. I was there two weeks ago. Yard is full. Gates are locked. Talked to the guys down the street and they told me that the old man that ran the place passed away and his wife had control of the business. They say that they open at random, but he hadn’t seen anyone there in months. I don’t know where else to find parts for my car. May end up having to have a machine shop make the linkage for me. Trying to avoid that hassle...

Oh, okay. I think they used to be known as Riteway Auto Parts. I remember I called about a steering wheel and they said they wanted $300 for it. Crazy. I was in the area, so I asked to see the steering wheel, and it was rough in person. They also increased the price to $600. I passed.

The yard I was thinking of was All Mercedes Wrecking Yard. Every time I went there, it seemed like it was closed, except for one time there was an old lady who acted like we were trespassing, but she let us in. Their prices seemed really high. I think this is the place that sold everything and shipped it to The Middle East.

I'd offer you a linkage if I had a spare, but I don't think I saved it from the 1979 300SD parts car I had years ago. I removed the transmission from the car (and it's currently in my daily driver 1980 300SD) but I really don't think the linkage got saved. But, I'll keep an eye out for it. I also browse eBay frequently and in fact, there is a guy parting out a 1979 300SD... maybe he has one if you ask: https://www.ebay.com/sch/m.html?_odkw=&fits=Model%3A300SD%7CMake%3AMercedes-Benz&_ssn=roverrecyclers&hash=item2abc50887e%3Ag%3Ao-4AAOSwYi5b9dDt%3Ark%3A1%3Apf%3A0&item=183548020862&_osacat=0&_from=R40&_trksid=p2046732.m570.l1313.TR10.TRC2.A0.H0.Xmercedes+300sd.TRS2&_nkw=mercedes+300sd&_sacat=0
Stop paying for animal cruelty and slaughter. Go vegan! https://challenge22.com/

1967 W110 Universal Wagon, Euro, Turbo Diesel, Tail Fins, 4 Speed Manual Column Shift, A/C
1980 W116 300SD Turbo Diesel, DB479 Walnut Brown, Sunroof, Heated Seats, 347,000+

Alec300SD

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Re: Intro & Shifter linkage Gear selector Issue 79 300SD
« Reply #12 on: 23 November 2018, 01:36 PM »
Jjutzy - Success, shift rod harvested with both retaining clips.

I took it apart and found it fits into the small flat rate USPS shipping box.

PM sent.
79 W116 300SD 'Stormcloud' new as of 10/22/2017
78 W116 300SD 'Desert Rose' new as of 01/26/2014
83 W126 300SD 'Rena 2.0' with engine from 82 W126 300SD Rena' (SOLD and crushed 11-20-2017)

Jjutzy

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Re: Intro & Shifter linkage Gear selector Issue 79 300SD
« Reply #13 on: 23 November 2018, 03:48 PM »
Thank you Alec. It’ll be nice to get the Mercedes back on the road. P.m. sent
1979 300 SD 348,000+ Miles

Jjutzy

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Re: Intro & Shifter linkage Gear selector Issue 79 300SD
« Reply #14 on: 26 November 2018, 12:50 PM »
Update:

So, Inhave installed the correct shift linkage. I am able to shift into all gears now.

I am unable to engage the transmission brake. It shifts out of R, but the transmission brake does not activate. The only part I have not changed is the gear selector lever on the transmission. Could this be my culprit?

Worried that I may have damaged the transmission when the flex disc failed. All other gears work great.
1979 300 SD 348,000+ Miles