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Old 12-22-2003, 09:08 AM
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Join Date: Apr 2003
Posts: 6
w126 brake disk removal

I have 300SEL/88 I can not figure out how to remove the rotor (disk). I have a 300E, but this is easy all you need is to remove one small screw and pull the disk. Help any one, Thanks
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Old 12-22-2003, 10:53 AM
glenmore's Avatar
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Join Date: Sep 2002
Location: Los Angeles
Posts: 963
I've changed the rotors on my W124 and there is just the one screw but most likely your rotors are rusted on like mine were. Spray with WD40, etc., use eye AND ear protection, start with a rubber mallet and then a BFH (big f... hammer) if neccessary. Have new rotors on hand as you will probably damage the old ones. A thin layer of antisieze paste (you'll see where to put it from the old rotor) will help with future changes.

1991 300CE
1990 LS400
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Old 12-22-2003, 12:38 PM
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Join Date: Oct 2002
Location: Colorado Springs
Posts: 481
on rears it is the same in a 126.
Martin Ingram
Colorado Springs
2005 320 CDI
2006.5 VW Jetta TDI
1991 560SEL (179000 Sold)
1972 280SEL 4.5 ('The Lead Sled' 320000 miles when sold.)
1972 220D (225000 when sold)
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Old 12-22-2003, 12:41 PM
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Join Date: Dec 2003
Location: Rogersville, Missouri
Posts: 142
Front brake disc removal
On the 126 chassis the brake discs are removed after removing the caliper and then disassembling the wheel bearing. The allen bolts can then be removed releasing the disc from the hub. Grease seals and wheel bearings are serviced at this time
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Old 12-22-2003, 06:29 PM
Q Q is offline
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Join Date: Aug 2000
Posts: 839
As stated above, you have to remove the entire hub. One tip I wish I had read before doing mine was to two lug bolts back in the hub and clamp them in some sort of vise to give leverage against the tough to get out bolts that hold the disk to the hub. I wound up using a screwdriver in the disk vent to brace the assembly against rotation. Was really a nightmare to get them free. I would clean everything really good and put locktite back on the bolts during assembly.
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Old 12-22-2003, 08:22 PM
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Join Date: Apr 2000
Location: Oakville, Ontario, Canada
Posts: 421
Easy way to remove hub...

Once you have the rotor off, bolt it back onto one of the wheels. Thread 2 bolts through the wheel and into the rotor (ie. reassemble as if these parts were on the car)

Put the wheel face down with the rotor and hub facing up, then it's a piece of cake to remove the hub bolts!

'83 300SD 335,000km (207k) mi SOLD
'87 560SL 163,000km (101k mi) SOLD
'86 300SDL 356,000km (220k mi) SOLD
'92 500SEL 250,000km (155k mi) SOLD
'90 300SL 140,000km (87k mi) SOLD
'01 S430 260,000km (161k mi) SOLD
'03 SL500 167,000km (104k mi)
'07 GL320 CDI 4MATIC 289,000km (162k mi)
'07 S550 4MATIC 170,000km (105k mi)
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Old 12-23-2003, 11:47 AM
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Join Date: Aug 2001
Location: Evansville, Indiana
Posts: 8,150
The W126 front rotors are bolted to the hub from behind. It is necessary to remove the hub to change them.

I just clamp the rotor in a large bench vise, and have never had too much trouble getting the bolts out with a 24" breaker bar and 1/2" drive 10mm allen. I'd not use a 3/8" drive, too light.

Make sure the hug and rotor mating surfaces are nice a clean -- a chunk of rust in there can make the brake pedal pulsate!


1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
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