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  #1  
Old 12-11-2010, 01:24 PM
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w124 front brakes ,forgot new grease!

Will having used the old grease cause major problems if not changed??
Which grease is best?
thanks Forum

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  #2  
Old 12-11-2010, 01:27 PM
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what did you do with the brakes the involves grease?
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Old 12-11-2010, 01:32 PM
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Are you talking about the lithium grease to help keep brake squeeling down? Or?
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Old 12-11-2010, 01:35 PM
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Bearing grease.
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Old 12-11-2010, 01:38 PM
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So you did wheel bearings not brakes? If your talking about packing bearings with grease, you should always use fresh uncontaminated grease. All it takes is one grain of grit to ruin the smooth surface of those bearing racers and it starts failing again. Try to keep grease as sterile as possible.
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  #6  
Old 12-11-2010, 01:49 PM
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i kept it clean but used the old grease on there.
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Old 12-11-2010, 01:51 PM
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It's taking a chance with brand new bearings but if you kept your work area as clean as possible then thats about all you can do.

I'm suprised the parts store you bought bearings at didnt try to sell you a tub of grease to pack the new bearings with.
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Old 12-11-2010, 02:24 PM
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Did early W124's involve pulling the hub to do the rotors? When I did the w123/w126 brakes the hub had to be removed and repacking was P.M. .. But I just did my '94 w124 and the hub stayed.
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Old 12-11-2010, 04:33 PM
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Quote:
Originally Posted by TheDon View Post
Did early W124's involve pulling the hub to do the rotors? When I did the w123/w126 brakes the hub had to be removed and repacking was P.M. .. But I just did my '94 w124 and the hub stayed.
On my 87 you do not have to take the hub off to do the rotors. Just take out the hex screw and off they come. Well, and take the caliper off.

Europower, did you take the hub off and remove the bearings, or are you saying you just left everything as is. I don't really understand why one would remove the hub if not to repack the bearings. Or do you mean you scraped old grease out of the hub and packed it into the bearings? If you did not remove the hub at all, then I don't think it's a problem unless you feel the bearings are due to be serviced. If you took them off and there's a possibility some grease was lost or contaminated, definitely repack them with new grease now. I used the MB stuff but have also done fine with the NAPA wheel bearing grease. But use grease that is specific for wheel bearings because it needs to be high temp. I cleaned out my old bearings using mineral spirits then brake cleaner, then repacked them.
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  #10  
Old 12-11-2010, 04:34 PM
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Quote:
Originally Posted by BodhiBenz1987 View Post
On my 87 you do not have to take the hub off to do the rotors. Just take out the hex screw and off they come. Well, and take the caliper off.

.
exactly, which is why I am confused. Maybe he forgot the anti-squeal paste?

Also, use wheel bearing grease rated for disc brakes since it is rated for higher temps than the rest. I use synthetic stuff and its doing fine
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  #11  
Old 12-11-2010, 08:34 PM
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it was my 1st time doing the brakes on the w124, total newbie lol
All i did was remove caliper, open up 5mm allen on bearing holding the rotor,changed the rotor replaced the bearing with the old grease on the cap, like i said i forgot to buy grease, and replaced the pads and reinstalled the calipers,i kept everything super clean and recleaned rotor with brake cleaner before closing things back up.
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  #12  
Old 12-11-2010, 08:35 PM
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I didnt open up the caliper bleed line,i just pressed the piston in,which seemed to be exposed and bare metal. was that normal? no leaks
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  #13  
Old 12-11-2010, 09:01 PM
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Originally Posted by europower View Post
it was my 1st time doing the brakes on the w124, total newbie lol
All i did was remove caliper, open up 5mm allen on bearing holding the rotor,changed the rotor replaced the bearing with the old grease on the cap, like i said i forgot to buy grease, and replaced the pads and reinstalled the calipers,i kept everything super clean and recleaned rotor with brake cleaner before closing things back up.
Seems like you just removed the cap for no reason.

No need to do the bearings on the w124 when changing the discs. Just remove the caliper, remove 5mm allen bolt. Reverse steps to install.

There is a great DIY somewhere on here on brakes for the w124. I just did the same job.. Took all of 45 minutes.

remove brake reservoir cap
loosen lugs
jack car up
remove wheel
remove spring clip and holding pins
compress pads one side at a time with water pump pliers(compress the old pads in, not the piston itself.

Remove caliper, hang with wire.
remove said bolt.
Replace with new disc.
install bolt
Hit the disc with a daco disc or sand paper then clean with brake cleaner
reinstall caliper
install new pads with anti squeal paste on the back of pads.
check torque values.
reinstall wheel.
check torque
replace cap on reservoir.
Pump the brakes..
done
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  #14  
Old 12-11-2010, 09:53 PM
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Oki doki Don, but now since i opened the cap i will take out bearings clean and regrease.
many thanks, i used ATE rotors and Textar pads, car has no squeek and brakes very nicely.
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  #15  
Old 12-11-2010, 09:54 PM
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I used zimmerman rotors and Pagid pads.

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