Author Topic: Throttle Link Refurb.  (Read 2763 times)

Markbhai

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Throttle Link Refurb.
« on: June 07, 2018, 18:51:15 »
HI All.

Does anyone know how to remove and re-fit the brass bush (part number 41 in the attached picture) from the throttle link?

They appear to be held in with snap rings (part 31), but I cannot work out how to remove them and will no doubt wonder how to refit.

Mine need replacing as they have too much play.

Regards

Mark.

Tyler S

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Re: Throttle Link Refurb.
« Reply #1 on: June 07, 2018, 19:09:45 »
Theres 2 ways to do it. On the right side "pass side US" You can remove the end snap ring and pull the cross shaft from the mount . The bushing is usually left in the bracket. Tap it out with a similarly sized socket. If the bushing remains on the shaft you can usually drive it off with a flat punch or chisel. 
On the left "drivers in US" side of the cross shaft, do the same thing except that the end linkage arm with ball will need to be removed. Using a small round punch, drive out the dowel split pin holding the arm to the shaft. The bushing can then be slid off the end. Keep track of the orientation of the arm for reassembly.
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Markbhai

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Re: Throttle Link Refurb.
« Reply #2 on: June 07, 2018, 19:34:17 »
 Thanks Tyler.

I am falling at the first hurdle!

It is the snap ring I am struggling to remove.  t seems lodged in there and I did not want to apply brute force in case I was doing something wrong.

Are there any special tools or is it just a small screwdriver and a lot of swearing?

M

:-)

Benz Dr.

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Re: Throttle Link Refurb.
« Reply #3 on: June 07, 2018, 20:20:31 »
I usually I just pry the shaft out of the bracket and then remove the E clip and the bushing should slide off. This shouldn't be difficult to replace.
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Pawel66

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Re: Throttle Link Refurb.
« Reply #4 on: June 08, 2018, 04:28:20 »

Are there any special tools or is it just a small screwdriver and a lot of swearing?

M

:-)
Swearing helps, but maybe it is a question of determining the proper direction (opposite to where the clip opening is), which may not be seen clearly. Then a small screwdriver is ok. You can also unscrew both brackets from engine and fight with the clip on the bench. You can then clean the brackets nicely. Take a picture of the shaft with levers before pulling it apart.
Pawel

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Tom in seattle

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Re: Throttle Link Refurb.
« Reply #5 on: June 12, 2018, 06:06:21 »
I don't think mine even had snap rings holding them in place.
Tom Averill
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Pawel66

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Re: Throttle Link Refurb.
« Reply #6 on: June 12, 2018, 08:31:24 »
Well, there are two places - snap rings in the brackets holes to hold the brass bearings and then the circlips or E-rings (I think) on the shaft next to bearing in the inlet manifold bracket to hold the shaft in place.
Pawel

280SL 1970 automatic 180G Silver
W128 220SE
W121 190SL
G-class

Markbhai

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Re: Throttle Link Refurb.
« Reply #7 on: June 14, 2018, 20:20:09 »
Just refreshing this now I can explain better.

Look carefully and you will see a c clip holding the bushing in place. I need to replace the Bush but cannot work out how to remove it.

Brute force will damage the alloy housing.

Mark.

Pawel66

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Re: Throttle Link Refurb.
« Reply #8 on: June 14, 2018, 20:36:42 »
Without accepting any potential liabilities to liquidate damages and underlining the owner does this on his own risk: I was scared, but I hammered the bushing out with a socket from the other side (quite gently, it went out). I think I put some grease on it before. The clip just expands, there is space there for this expansion in the bracket. Then I pressed the new one in on the vice gently, having warmed up the bracket with hot air blower (because I was very scared, not being sure if it made sense).

If you want to take this clip out, you just need to pry it out with a screwdriver by inserting the screwdriver between the ends of the clip... I am not sure, but I think I did it on the other bracket.
« Last Edit: June 14, 2018, 20:46:46 by Pawel66 »
Pawel

280SL 1970 automatic 180G Silver
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W121 190SL
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Markbhai

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Re: Throttle Link Refurb.
« Reply #9 on: June 14, 2018, 21:22:43 »
Thanks Pawel

That got the old one off, I just have to work out now how to get the new one on as it seems not to fit.  These cars are beautiful but frustrating, just like my wife!

I would have expected it to simply slide on, but it seems not.

M

Pawel66

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Re: Throttle Link Refurb.
« Reply #10 on: June 15, 2018, 04:36:21 »
It has been written about it on this forum.

When I cleaned and greased the bracket, with the clip in, I just used the vice to gently push in the bushing. Just added pads to the jaws of the vice not to scratch anything. But it went in very gently. What I did also, being afraid of the bracket cracking (probably it was not necessary and the others will laugh at it), was to put the bushing in the freezer for 10 minutes and blow hot air on the bracket.

I think I did not even have to use the vice as the bushing went in very gently. It is the clip that is holding it really, not the bracket diameter. And the clip just expands to let the bushing through.
Pawel

280SL 1970 automatic 180G Silver
W128 220SE
W121 190SL
G-class

Markbhai

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Re: Throttle Link Refurb.
« Reply #11 on: June 15, 2018, 06:27:46 »
The freezer was my friend too...I am not laughing.

Thanks for your help.