Check your steering coupling

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John Green
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Check your steering coupling

Post by John Green » Wed 18 Mar, 2015 11:20 am

The MB Spares has recently removed this coupling and shaft assembly from a W123. we were surprised to see it and have since looked at a few other cars and some have small cracks in them. This the coupling in the middle of the column, you need to remove the trim under the dash to check it. So this post is a service to all W123 owners and will be made a sticky so it stays at the top of the list.

Go and check your steering column coupling. NOW.
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pastelgrey300D
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Re: Check your steering coupling

Post by pastelgrey300D » Wed 18 Mar, 2015 1:32 pm

Interesting that you have had a few near failures - it's a part that is very well protected from the elements etc. Is this more of an issue for cars with high kms or that have done country driving? Or is it a case of the rubber just aging?
David
1967 W111 230S - Horizonblau
1965 W110 190c - Mittelrot
1967 W110 200D - Weiss (work in progress)
+ other classics

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John Green
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Re: Check your steering coupling

Post by John Green » Sat 21 Mar, 2015 4:52 pm

pastelgrey300D wrote:Interesting that you have had a few near failures - it's a part that is very well protected from the elements etc. Is this more of an issue for cars with high kms or that have done country driving? Or is it a case of the rubber just aging?
Car it came from was a well serviced car with 260k on it, spent most of its life in Sydney, so at a guess not much different to many other W123's out there.
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mathuisella
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Re: Check your steering coupling

Post by mathuisella » Mon 12 Dec, 2016 8:19 am

John Green wrote:
pastelgrey300D wrote:Interesting that you have had a few near failures - it's a part that is very well protected from the elements etc. Is this more of an issue for cars with high kms or that have done country driving? Or is it a case of the rubber just aging?
Car it came from was a well serviced car with 260k on it, spent most of its life in Sydney, so at a guess not much different to many other W123's out there.

fire truck, that's why it spend half it's life travelling up and down parrammata road, twice a day :/

I swear the idiot with no foresight who blocked the completion of the M4 all the way into the CBD because of "highway noise" regrets it now..... instead of some 'woosh' noise with the sound dampeners/walls you hear everything from bicycles to 18 wheeler trucks going over every pot hole...

and they cannot close the road and repair it because it's the only west bound way into the city.

And the logistics that it crosses a few councils so they blame each other for the roads faults.

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DirtyFingernails
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Re: Check your steering coupling

Post by DirtyFingernails » Sat 04 Mar, 2017 8:19 pm

Finally inspected my steering coupling today. Looked good all around it, no cracks, phew! :occasion5:
Cheers,
Dan

1977 W123 300D

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300TDT
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Re: Check your steering coupling

Post by 300TDT » Tue 12 Dec, 2017 3:01 pm

Is this a DIY job inside the cabin?
'82 300TD Turbo : '83 model, LHD, auto, anthracite grey, cream cloth, chassis: 380,000km, engine: 195,000km.

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Tony From West Oz
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Re: Check your steering coupling

Post by Tony From West Oz » Tue 12 Dec, 2017 10:07 pm

300TDT wrote:
Tue 12 Dec, 2017 3:01 pm
Is this a DIY job inside the cabin?
Not exactly. It is a DIY job under the bonnet adjacent to the firewall.
Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

'83 W123 300D 325000km (Wife's car Josephine - sold).
'84 W123 300D replaced good OM617 912 with OM617 952 and enjoyed having good acceleration for the first time since first driving a 300D in 2002 - became engine and trans donor for 300CD Turbodiesel conversion. Now parted out.
'86 W124 300D sold (Wife's old car - sold )
'85 W123 300CD, 275 000km (Fatmobile) rebuilt turbodiesel from previous Fatmobile transplanted into 280CE (SOLD)
'99 W202 C250 Turbodiesel (my darling Wife's car - Sold)
'98 W202 C250 Turbodiesel (my car - Sold)
'06 Ssanyong Musso Crew Cab 2WD Ute (OM662 diesel and Auto Transmission)

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300TDT
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Re: Check your steering coupling

Post by 300TDT » Wed 13 Dec, 2017 8:48 am

This is under the dash, isn't it?

Lower photo. Point 4. Seems to be a simple unbolt job?

Any links to DIY info if not in FSM?
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'82 300TD Turbo : '83 model, LHD, auto, anthracite grey, cream cloth, chassis: 380,000km, engine: 195,000km.

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John Green
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Re: Check your steering coupling

Post by John Green » Thu 14 Dec, 2017 7:30 am

There are two joint, one under the dash and the other where the steering column joins the steering box.
Inaugural OZBENZ national meet this September, all welcome to attend. https://ozbenz.net/viewtopic.php?f=46&t=25165

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http://mbspares.com.au - Supporting Australia's Mercedes-Benz Enthusiasts.

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300TDT
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Re: Check your steering coupling

Post by 300TDT » Thu 14 Dec, 2017 11:48 am

Are they both 1234620346?
John Green wrote:
Thu 14 Dec, 2017 7:30 am
There are two joint, one under the dash and the other where the steering column joins the steering box.
'82 300TD Turbo : '83 model, LHD, auto, anthracite grey, cream cloth, chassis: 380,000km, engine: 195,000km.

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Tony From West Oz
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Re: Check your steering coupling

Post by Tony From West Oz » Thu 14 Dec, 2017 4:36 pm

When I put the turbo into the 300D, I found that the exhaust was very close to the steering box. There were no issues though, until I removed it for installation in the 280CE. I found that the flex coupling for the steering had degraded with the rubber melted around its periphery, mainly in the "straight ahead" position.
The 280E had a heat shield there to protect the coupling from exhaust heat.
I retained the heat shield when the OM617A went in.
Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

'83 W123 300D 325000km (Wife's car Josephine - sold).
'84 W123 300D replaced good OM617 912 with OM617 952 and enjoyed having good acceleration for the first time since first driving a 300D in 2002 - became engine and trans donor for 300CD Turbodiesel conversion. Now parted out.
'86 W124 300D sold (Wife's old car - sold )
'85 W123 300CD, 275 000km (Fatmobile) rebuilt turbodiesel from previous Fatmobile transplanted into 280CE (SOLD)
'99 W202 C250 Turbodiesel (my darling Wife's car - Sold)
'98 W202 C250 Turbodiesel (my car - Sold)
'06 Ssanyong Musso Crew Cab 2WD Ute (OM662 diesel and Auto Transmission)

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