Quote:
Originally Posted by jmak124
After spending a few hours of trying to replace brake lines on the 300D, I hit a snag. As I was installing the left rear caliper, all was well until it came time to torque it down. The top bolt torqued fine, the bottom one just slipped and I noticed the threads on the bolt were rounded upon closer inspection. The caliper mount looks okay but using the bolt from the top mount, it just slides in and out.
Is this just a bolt issue, or is it the caliper mount? How much would it cost to source a new part and is it worth it?
This was my brother's car and its not in use so I'm prepping it to be sold or donated and at this point, I don't know if its worth the effort depending on the issue. |
Are ALL the caliper bolts like that one? They should be regular hardened metric bolts - probably grade 10.9.
Not flange-head thread-cutting bolts like the one in your photo. Hope the threads in your caliper-mount haven't been ruined by an incorrect bolt. If you have any original bolts left holding one of those calipers, that's the one you need to find a match.
In my area, there's only one supplier that carries hardened metric bolts. If you don't have such a place near you, your best bets are Phil here at PartShop, a Mercedes dealer, or off the same model car in a salvege-yard.
In fact, when I'm visiting my local Pick-N-Pull for some item, I often find lots of assorted metric bolts lying loose around vehicles where others have removed parts.
I usually grab a handfull or two to keep handy in case I run into a snag like yours.
Happy Motoring, Mark