Submariner1
Senior Member
- Joined
- Sep 3, 2016
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- 4,694
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- Location
- Windsor Berkshire
- Your Mercedes
- CL500 2009 5.5
OK did the left front side Caliper and brake pad and drove 3 miles ... no squeaks, it braked straight all good? Or so I thought.
Then this morning, I noticed the wear was uneven ... it had failed to rub off the rust on most of the lower half.
As there was a shinny band near the hub. I would normally assume it was just accomodating the uneven wear of the disc and possiblly wearing off some of the new brake pad on a higher section (near the lip by the hub). Note the lip was just within MBs tolerance.
I ask the question as in truth I did put too much thread locker on the 2 securing M14 bolts, and I just wondered when inserting the bolt; could some thread locker have got between the mating surface of the caliper and the steering knuckle, i.e. So the caliper didn't seat perfectly flat to the steering knuckle?
I assume it did seat properly, because of the shiny worn lower band by the hub. And at 180 Nm probably would have squidged out any threadlocker.
Here is a pic of the other RH side's disk, where I know didn't overdo the thread locker.
But this right side had done 25 miles more. And even then there is also a slight band of unworn disk, in vaguely the same area.
OK, so as to compare like with like ... I drove 8 miles more, and the left (questionable side) now seems to have settled in/worn itself in.
Is it safe to assume the caliper is seated properly, and it was just the uneven disc, or the pad aligning itself by wearing to the lipped disc?
Apologies for this basic question, but when money was plentiful .. I just had the dealer change pads and disks at the same time. So no experience of doing this stuff myself or using partially worn discs.
Does the Pad automatically align itself if the caliper is not seated perfectly squarely?
Or are there any tell take signs if its not seated squarely, like noises or steering abnormalities?
So far seems to be fault free. Brakes straight, albeit not done any vicious braking until the new Pads are worn in.
Then this morning, I noticed the wear was uneven ... it had failed to rub off the rust on most of the lower half.
As there was a shinny band near the hub. I would normally assume it was just accomodating the uneven wear of the disc and possiblly wearing off some of the new brake pad on a higher section (near the lip by the hub). Note the lip was just within MBs tolerance.
I ask the question as in truth I did put too much thread locker on the 2 securing M14 bolts, and I just wondered when inserting the bolt; could some thread locker have got between the mating surface of the caliper and the steering knuckle, i.e. So the caliper didn't seat perfectly flat to the steering knuckle?
I assume it did seat properly, because of the shiny worn lower band by the hub. And at 180 Nm probably would have squidged out any threadlocker.
Here is a pic of the other RH side's disk, where I know didn't overdo the thread locker.
But this right side had done 25 miles more. And even then there is also a slight band of unworn disk, in vaguely the same area.
OK, so as to compare like with like ... I drove 8 miles more, and the left (questionable side) now seems to have settled in/worn itself in.
Is it safe to assume the caliper is seated properly, and it was just the uneven disc, or the pad aligning itself by wearing to the lipped disc?
Apologies for this basic question, but when money was plentiful .. I just had the dealer change pads and disks at the same time. So no experience of doing this stuff myself or using partially worn discs.
Does the Pad automatically align itself if the caliper is not seated perfectly squarely?
Or are there any tell take signs if its not seated squarely, like noises or steering abnormalities?
So far seems to be fault free. Brakes straight, albeit not done any vicious braking until the new Pads are worn in.