Mercedes-Benz Forum banner

1 - 17 of 17 Posts

·
Outstanding Contributor
450slc5.0cab 280sl5sp 280se4.5 500se+500slAMG +250seStkW108 350sl4spdX3 500secEuro
Joined
·
22,536 Posts
Discussion Starter #1 (Edited)
Any advice is welcomed. I hope to add lots of photos to this thread and document a caliper rebuild as best as I can. I'm starting with the front passenger on my 1973 450 SL VIN 10704412007016 (which I believe means I've got the earliest 450 SL calipers you can have).

Right now, my biggest question is how to clean up the old caliper. What fluid should I use to clean everything up? Since I've disassembled the two halves (something I now realize I should not have done), I can see bits of rubber from the disintegrated brake hose inside the fluid chambers. I know I've got to get that all out of there, and I wouldn't trust a vacuum or compressed air alone to do the job. Thoughts?

Should I just used clean brake fluid? Will anything work? Or do I need to worry about possibly destroying the seals between the two caliper halves?

Here's my thread with pictures: http://www.benzworld.org/forums/r-c107-sl-slc-class/1525287-noob-wondering-what-107-sl-buy-13.html

Shop manual for caliper rebuild: http://www.benzworld.org/forums/attachments/r-c107-sl-slc-class/331654d1284743084-noob-wondering-what-107-sl-buy-42-150.pdf
 

·
Outstanding Contributor
450slc5.0cab 280sl5sp 280se4.5 500se+500slAMG +250seStkW108 350sl4spdX3 500secEuro
Joined
·
22,536 Posts
Discussion Starter #2 (Edited)
Shopping parts rebuild parts at AutoHausaz.com and comparing to my calipers.

There's a rubber ring in the caliper (not the piston) that looks OK, but I'd assume I should replace it. This makes me think the second of these two parts is the one I want because it has a piston ring with it:

-------------------------------
0005866442
Fahrzeug Technik Ebern (FTE)
Brake Caliper Repair Kit; Front Left/Right
For models with chassis serial number through 009729. For models with ATE calipers. 2 kits per car.

-------------------------------
0025864442
ATE
Brake Caliper Repair Kit; Front Left/Right
For models with chassis serial number from 625585. For models with ATE calipers. 2 kits per car.
--------------------------------

(Those two are the second and third returned in this search: Your Parts Search Returned 5 Part(s) )

I'll add a picture of my piston ring in my next post.
 

·
R/C107 Moderator
1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
Joined
·
32,314 Posts
Well number 2 would be wrong as it states: For models with chassis serial number from 625585. #1 is the correct part number.
 

·
Outstanding Contributor
450slc5.0cab 280sl5sp 280se4.5 500se+500slAMG +250seStkW108 350sl4spdX3 500secEuro
Joined
·
22,536 Posts
Discussion Starter #4
OK. Now for general research on the type of calipers I have. It's always possible they're not original to the car.

Thank you Jim!
 

·
Outstanding Contributor
450slc5.0cab 280sl5sp 280se4.5 500se+500slAMG +250seStkW108 350sl4spdX3 500secEuro
Joined
·
22,536 Posts
Discussion Starter #6
whoops. upload hadn't finished. weak wireless here in the garage I guess.
 

Attachments

·
Outstanding Contributor
450slc5.0cab 280sl5sp 280se4.5 500se+500slAMG +250seStkW108 350sl4spdX3 500secEuro
Joined
·
22,536 Posts
Discussion Starter #7
I guess the lesson learned here is to not trust the VIN for parts, at least on a "reconstructed" title car. I'm assuming that the "Ate" is tell-tale, and confirms that I don't have the FTE type.

I hope I have the right title / VIN for my car. :)
 

·
R/C107 Moderator
1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
Joined
·
32,314 Posts
I think you missed something in the part description.
0005866442
Fahrzeug Technik Ebern (FTE)
Brake Caliper Repair Kit; Front Left/Right
For models with chassis serial number through 009729. For models with ATE calipers. 2 kits per car
 

·
Outstanding Contributor
450slc5.0cab 280sl5sp 280se4.5 500se+500slAMG +250seStkW108 350sl4spdX3 500secEuro
Joined
·
22,536 Posts
Discussion Starter #9 (Edited)
Oh wow. You sure are right again Jim! So I guess I better take good care of those crusty rings. I already pulled them out with two screwdrivers. One was looser than the other.

I left a message for AutohausAZ but haven't heard back from them yet.

I wonder why that set doesn't show (or include) a piston ring.
 

·
R/C107 Moderator
1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
Joined
·
32,314 Posts
I wondered about that too. If yours have an Oring the kit should too.
 

·
Outstanding Contributor
450slc5.0cab 280sl5sp 280se4.5 500se+500slAMG +250seStkW108 350sl4spdX3 500secEuro
Joined
·
22,536 Posts
Discussion Starter #11
I wondered about that too. If yours have an Oring the kit should too.
I see the 4th item in my search returns an ATE set with no chassis numbers that just includes the rubber parts. My metal is pretty mutilated now though. You know... it almost looks like they are all the same parts, at about $3-$4 per piece/part in the set.

If I don't hear back from AutohausAZ, I'll probably just place an order for all three sets. The thing is, I'd like to buy rebuild kits for all my calipers while I'm at it... so I'm ready next time this happens.
 

·
Outstanding Contributor , Bob's Your Uncle!
-----'83 280 SL----- 5 speed....The PIG
Joined
·
29,492 Posts
I love my Mercedes parts dept.
No fuss, no doubts.

But no change for a $100 bill, either.
 

·
Outstanding Contributor
450slc5.0cab 280sl5sp 280se4.5 500se+500slAMG +250seStkW108 350sl4spdX3 500secEuro
Joined
·
22,536 Posts
Discussion Starter #13
I have been telling myself I'm going to drive this car over to the Mercedes dealer that's less than a mile from my house. I have yet to do that.

I guess it's a good idea to call the local Mercedes dealer if you need Mercedes part, eh?
 

·
Outstanding Contributor , Bob's Your Uncle!
-----'83 280 SL----- 5 speed....The PIG
Joined
·
29,492 Posts
I guess it's a good idea to call the local Mercedes dealer if you need Mercedes part, eh?
My philosophy.

Not shared by everyone.

And I'm the blue collar paycheck.
 

·
Outstanding Contributor
450slc5.0cab 280sl5sp 280se4.5 500se+500slAMG +250seStkW108 350sl4spdX3 500secEuro
Joined
·
22,536 Posts
Discussion Starter #15
Maybe I'll bring the caliper over the the MB dealer on Monday. Maybe show a printout of the AutohausAZ parts I was thinking about ordering. If their stuff is a lot more expensive, I'll just buy from AutohausAZ, maybe buying all three of the possibilities.

I probably won't worry about the others right now. Here's why: (a) The passenger rear caliper is silver unlike all the others. So I assume it was replaced already for some reason. (b) I am willing to bet that my front passenger caliper seals disintegrated the night of the glowing rotor. All the other calipers are holding pressure. I know they should be rebuilt in time, but unless anyone can convince me I need to do it right now, I'm just going to wait for a leak. Maybe one argument would be... well if the passenger rear was replaced/rebuilt, then the others are probably ready to go too... I should at least rebuild the driver side which appear to be original and dirty. Thoughts?

So less than $60 in parts for a single caliper isn't the end of the world. If that works, I'll be solving what appeared to be a huge brake problem for only about $100-$120 (plus my own "free" labor).
 

·
Outstanding Contributor
450slc5.0cab 280sl5sp 280se4.5 500se+500slAMG +250seStkW108 350sl4spdX3 500secEuro
Joined
·
22,536 Posts
Discussion Starter #16
Oh... I hope that seal between the two halves holds up... otherwise, my rebuild is a failure and I should have just bought a rebuilt one instead of trying my own rebuild. Hmmm...
 

·
Registered
1973 450SL
Joined
·
651 Posts
Maybe I'll bring the caliper over the the MB dealer on Monday. Maybe show a printout of the AutohausAZ parts I was thinking about ordering. If their stuff is a lot more expensive, I'll just buy from AutohausAZ, maybe buying all three of the possibilities.
They'll like that. Maybe only double the price they charge you.
 
1 - 17 of 17 Posts
Top