rear axle " clonk"

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tweak
A Class
Posts: 13
Joined: Tue 26 Aug, 2014 10:19 am
Model you own: w123

rear axle " clonk"

Post by tweak » Wed 19 Aug, 2015 11:35 am

Whato everyone,

I have a 1977 280e, petrol engined car.

Every now and then ( and always only in the morning after standing overnight or longer ) the rear axle " clonks" as it moves as the car passes over the driveway onto the road.

There is the usual small road join between the drive and the tarmac road.

Whilst I know this is a small annoyance, it does remain an annoyance.

Hoe does one lube ( grease ) the sliding joints in the independent back axle?

thanks in advance,

Chris.

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BradA
S Class
Posts: 83
Joined: Wed 27 Apr, 2011 3:26 pm
Model you own: w123
Location: Canberra

Re: rear axle " clonk"

Post by BradA » Wed 19 Aug, 2015 8:20 pm

Could be a range of things, but the rear sway bar links are worth checking. A cheap and easy fix if they're the problem. Take a look at https://www.youtube.com/watch?v=wznyjVx_81A for a discussion on read end inspection points (including sway bar links).
cheers,

Brad

300Dman
E Class
Posts: 70
Joined: Tue 27 Nov, 2012 12:25 pm
Model you own: w123
Location: Long Beach, California, USA

Re: rear axle " clonk"

Post by 300Dman » Wed 02 Sep, 2015 1:53 pm

 Could it be that the Rubber cushions on the top end of the Shock Absorbers have become compressed leaving some play in the Shock absorber? If so often tightening the Nut on the Shock Absorber Shaft will take care of it.

Could it be something is loose inside of the Trunk/Boot?

It also could be time to get under the Car and do a visual inspection.

230ew123
Adenauer
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Joined: Wed 19 Oct, 2016 11:34 pm
Model you own: w123
Location: eaglemont + cranbourne sth

Re: rear axle " clonk"

Post by 230ew123 » Tue 07 Nov, 2017 11:33 am

Did you get on to the clunk?

I suffer from sagging arse and also have a clunk in the rear. Firstly i plan to replace the sway bar rods, seems pretty straight forward, then then try to get a little lift by replacing the center diff mount. Anyone have any tips?

stumpjumper
Finnie
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Re: rear axle " clonk"

Post by stumpjumper » Sun 31 Dec, 2017 5:34 pm

It could be an early sign of a failing CV joint, usually due to lack of lubrication as the grease escapes through a torn rubber boot.

My rear axle on one side developed a clunk,and I spent some time looking for something caught up in the drive shaft. The clunk came and went, then stayed for good.

Removing and replacing a half shaft is not hard, and is no more difficult than replacing a torn boot.

Pelicanparts has a very good post on how to do it:

https://www.pelicanparts.com/techarticl ... cement.htm
W123 1985 230E - thistle green metallic/Palomino leather! - driver
W109 1971 300SEL - Arctic white/tan - gone to a good home
W123 1984 230E -,champagne metallic/Palomino - dismembered

230ew123
Adenauer
Posts: 325
Joined: Wed 19 Oct, 2016 11:34 pm
Model you own: w123
Location: eaglemont + cranbourne sth

Re: rear axle " clonk"

Post by 230ew123 » Sun 31 Dec, 2017 8:20 pm

thankfully for me it was just the sway links, quick, easy and cheap. finally figured out to extend my merc's life is to club reg it in the near future...

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