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E class pre MOT brake stuff

W1ghty

MB Enthusiast
Joined
Jun 27, 2020
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Location
Sunny Essex
Car
E320cdi and CLK200
IMG_2736.jpegIMG_2738.jpegIMG_2741.jpegIMG_2740.jpegBeen a busy few days with the E class . I took the rear calipers off and changed the pistons because the original ones are a plasticky compound that apparently swell with heat and age . I changed the dust covers and internal seal as well . I did split one new dust seal with a screwdriver when bedding it on so had to wait a couple of days for a new one to turn up .
Last year I had an advisory for rubber brake hose perishing so I took this opportunity to change all 4 at the same time . Three went without an issue , but one of the fronts rounded off the nut so it took an hour to file down the 11mm nut to 10mm so I could get a smaller spanner on it . With a bit of freeze spray and more penetrating fluid it finally worked .
I cleaned up and lubed both front and rear level sensors with ACF50 .
Cleaned the bodywork slots in the front wheel wells that can collect dirt and grit .
Adjusted and regreased both front wheel bearings .
Stuck the summer alloys back on with new Goodyear Assymetric 5’s all round.
Because the weather was so nice I managed a quick pint at the local pub after a walk on the last 3 days as well .
If I charged by the hour I would have earn’t a fortune .
 
View attachment 155628View attachment 155629View attachment 155630View attachment 155631Been a busy few days with the E class . I took the rear calipers off and changed the pistons because the original ones are a plasticky compound that apparently swell with heat and age . I changed the dust covers and internal seal as well . I did split one new dust seal with a screwdriver when bedding it on so had to wait a couple of days for a new one to turn up .
Last year I had an advisory for rubber brake hose perishing so I took this opportunity to change all 4 at the same time . Three went without an issue , but one of the fronts rounded off the nut so it took an hour to file down the 11mm nut to 10mm so I could get a smaller spanner on it . With a bit of freeze spray and more penetrating fluid it finally worked .
I cleaned up and lubed both front and rear level sensors with ACF50 .
Cleaned the bodywork slots in the front wheel wells that can collect dirt and grit .
Adjusted and regreased both front wheel bearings .
Stuck the summer alloys back on with new Goodyear Assymetric 5’s all round.
Because the weather was so nice I managed a quick pint at the local pub after a walk on the last 3 days as well .
If I charged by the hour I would have earn’t a fortune .
Good effort!
 
It seems our 211 may have the distorted rear caliper piston/s.
I've just replaced the pads, the calipers felt a bit grindy pushing them back.
Now after road testing a few miles the o/s is smoking, so the piston/s is/are sticking is my guess.

Is the replacement service kit the best way?
Better if I don't need new calipers.
 
It seems our 211 may have the distorted rear caliper piston/s.
I've just replaced the pads, the calipers felt a bit grindy pushing them back.
Now after road testing a few miles the o/s is smoking, so the piston/s is/are sticking is my guess.

Is the replacement service kit the best way?
Better if I don't need new calipers.
Replacing the pistons is cheaper than new calipers , that was my motivation.
 
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Excellent work. A pint very well deserved 👍🍻
A lovely day for crawling around the motor,
and then still lovely for a walk around Grinlow Woods and up to Soloman's Temple with our little pooch. That's a regular for us.
And now another walk to the Guinness (Wye Bridge) shop.
 
Replacing the pistons is cheaper than new calipers , that was my motivation.
Thanks, all ordered.
If the hills aren't to steep for 'em I might get delivery Tuesday.
I can't see it being over 17 degrees by then though. We even have possibility of snow, apparently.
 
Thanks, all ordered.
If the hills aren't to steep for 'em I might get delivery Tuesday.
I can't see it being over 17 degrees by then though. We even have possibility of snow, apparently.
18 here today buddy , forecast is 7 on Tuesday :eek: .
Good luck with the caliper project .
 
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lovely for a walk around Grinlow Woods and up to Soloman's Temple.

We were just saying the other day that we must do that walk again soon. Last time for a bit of a novelty, we took the bus from Macclesfield (in order to admire the view over the top which you can't do while driving) got off near the start of the walk and then from Solomans temple walked down to Buxton, had lunch in the Pavilion gardens and took the bus back to Macclesfield.


Back on topic, it's a shame that the composite pistons swell as in principle they were a better idea than rusty steel ones.
 
The kit arrived yesterday, so hoping to get it rebuilt prior to the sleet falling.

But getting the snap ring of the dust cover to seat onto the caliper is turning out to be a bitch,
any tips?
 
Got the 1st one on. Easy with the right tools.

In the end I took the caliper off to work it in the vice. Then remembered I have a ball joint press kit. With the right bits the dust cover went on with ease.

But the snow is here, on and off. It doesn't feel so cold though, but this is yet another cuppa' break.
 
Got the 1st one on. Easy with the right tools.

In the end I took the caliper off to work it in the vice. Then remembered I have a ball joint press kit. With the right bits the dust cover went on with ease.

But the snow is here, on and off. It doesn't feel so cold though, but this is yet another cuppa' break.
You might need to put a long sleeve t shirt on if it gets colder buddy :)
 
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