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  #1  
Old 08-21-2016, 04:50 PM
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How much time to do brake job on 1991 560SEL?

I have the rotors, brake fluid and caliper rebuild kits for the 1991 560SEL. Obviously, I am going to have to take the car out of service.

I have average to above average mechanical skills; that said, how much time (two days or more?) out of service should I allow for? Reason I'm asking is I'm thinking of renting a car for a few days so that I have a ride during the down time.....


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  #2  
Old 08-21-2016, 05:08 PM
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Depends

On:

Mr. Murphy

+

Have you ever done this on an almost 25 year old Mercedes Before?

Can you "Swear in Court" that all it needs are Rotors and the Calipers Freshened ?
[Most Important , Are you gonna get involved in the "Splitting Calipers"
Imbroglio ?]
Is this (Or has this ever been) a Rust Belt MB ?
Do Y'all have the Pads "in Hand"?

And Finally,There is no such thing as too much Due Diligence !
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  #3  
Old 08-22-2016, 12:15 PM
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Almost forgot; I have the brake pads and the brake hoses for all four wheels. My only concern is the use of the caliper rebuild kits. I don't know for sure if the calipers will need rebuilt or not; if they do, I'm planning on taking the calipers and rebuild kits to a shop and have them rebuilt.
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  #4  
Old 08-22-2016, 12:22 PM
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a brake job can be a breeze if its just on the wheel ends of the car or it can become an avalanche of rust and you also have to remake all the brake hard lines on the car too.
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Old 08-22-2016, 12:24 PM
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I'd think that's a fine weekend project. If your car isn't rusty the brakes come apart fairly readily.

-J
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1991 350SDL. 230,000 miles (new motor @ 150,000).

2013 Fiat 500E. 20,000 miles, 80 miles at a time.
2012 Passat TDI. 95,000 miles. More space, power, and fuel economy than the Benz
2004 Touareg V10 TDI. 150,000 miles. One of 450.
1999 Jetta TDI. 310,000 miles.
1992 Jetta ECOdiesel. 156,000 miles. 1 of 48. Sold.
1991 Jetta ECOdiesel. 430,000 miles. 1 of 700. Sold to VeeDubTDI, totaled in front of our house
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  #6  
Old 08-22-2016, 01:49 PM
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HuskyMan, your question is difficult to answer without knowing your technical skill, available tools and the time it will take a shop to rebuild the calipers (if required). If you have never bled brake lines before that step alone could take a while, plus we have no idea how many hours per day you will actually work on the brake job. Too many unknowns to give you a reasonable estimate.

It would be best to evaluate whether, or not, the calipers need to be rebuilt before you start the brake system overhaul so you can schedule that work with a shop. No sense rebuilding the calipers if they function properly and are not leaking. You should confirm that a shop will agree to use your caliper rebuild kits. As far as I know most shops simply buy rebuilt calipers and install them, rather than spending the time to rebuild calipers. Since you will likely be paying the shop by the hour, it may be less expensive for you to buy rebuilt calipers. Plus, a shop may not want the liability of rebuilding calipers for you.
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  #7  
Old 08-22-2016, 01:53 PM
Daantjie
 
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Google W126 brake caliper rebuild. There is an excellent posting on this on another Benz forum.Might be one on PP too so just do a search.
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  #8  
Old 08-22-2016, 02:26 PM
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FWIW when I did this to my car a few months ago I simply got rebuilt calipers and swapped them as assemblies. A few $$ more, but then I didn't have to worry about running into a problem with the seals, etc.

-J
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1991 350SDL. 230,000 miles (new motor @ 150,000).

2013 Fiat 500E. 20,000 miles, 80 miles at a time.
2012 Passat TDI. 95,000 miles. More space, power, and fuel economy than the Benz
2004 Touareg V10 TDI. 150,000 miles. One of 450.
1999 Jetta TDI. 310,000 miles.
1992 Jetta ECOdiesel. 156,000 miles. 1 of 48. Sold.
1991 Jetta ECOdiesel. 430,000 miles. 1 of 700. Sold to VeeDubTDI, totaled in front of our house
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  #9  
Old 08-22-2016, 03:44 PM
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In answer to your question, it would take me about two hours, once the rebuilt calipers were in hand. How long it takes you is a different story. One thing I suggest is new hardware kits for the rears (new pins and crosspieces), that will eliminate a lot of rust. Doing the parking brakes? The parking brakes always have issues as these cars age. You may find the cables seized or the compensator rusted solid.
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  #10  
Old 08-22-2016, 04:46 PM
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Quote:
Originally Posted by Mxfrank View Post
In answer to your question, it would take me about two hours, once the rebuilt calipers were in hand. How long it takes you is a different story. One thing I suggest is new hardware kits for the rears (new pins and crosspieces), that will eliminate a lot of rust. Doing the parking brakes? The parking brakes always have issues as these cars age. You may find the cables seized or the compensator rusted solid.
What are new pins and crosspieces? Would you happen to know the part numbers for pins, cross pieces and for the parking brakes, cables and compensator?
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  #11  
Old 08-22-2016, 06:16 PM
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There are two different pin sets, depending on whether the brakes are ATE or Bendix. The more common ATE set looks like this:

http://www.pelicanparts.com/catalog/images/INT-Images/61233004.jpg

As for cables and compensator, these are expensive and fidgety to replace. Inspect them before you go shopping, just fix what's broke. Did you get parking brake shoes and hardware as well?
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  #12  
Old 08-22-2016, 11:11 PM
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I know I have the following in stock:

new brake pads front and rear
new brake rotors front and rear
new brake hoses for all four wheels.
brake caliper rebuild kits
new brake fluid

I have had these parts stuck in a closet for awhile so I am going to have to pull everything out and take inventory to see if I have new pin sets and cross pieces. I do not believe I have any parking brake parts. I'll need to purchase those later. Right now, the brakes are at a point they need to be done so the parking brakes will have to wait.....


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  #13  
Old 08-23-2016, 10:06 PM
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how do I tell if the rotors are Bendix or ATE?

how do I tell if the brake rotors are Bendix or ATE?
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  #14  
Old 08-23-2016, 10:40 PM
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Quote:
Originally Posted by HuskyMan View Post
how do I tell if the brake rotors are Bendix or ATE?
I think they were all ATE on that model. The fronts are also pinned, and the hardware is different:

http://www.pelicanparts.com/catalog/images/INT-Thumbnails/61233010.jpg

This stuff is all available from our hosts at peachparts.
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  #15  
Old 08-24-2016, 07:53 PM
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rears should take about an hour
fronts may take two hours if you repack the wheel bearings while there

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