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SL/SLC-Class (R107) 1971-1989 : 250SL, 280SL, 450 SL, 380 SLC, 450 SL, 380 SL, 560 SL

SL/R107: Long travel brake pedal 300SL 107 1989

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Old Nov 27, 2025 | 12:58 PM
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Long travel brake pedal 300SL 107 1989
I have a long travel brake pedal. Just fitted new rear brake calipers, new rear disks and pads. Front twin piston calipers with new pistons and repair kit, new disks. Brakes have been bled 3 times and no air in system with engine running and not running. Still the brake pedal travels a long way before engaging but stops immediately at end of travel. The car has had a total rebuild so I have no reference point to judge where the brake pedal should be, but it appears to be way too excessive. Any ideas?
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Old Nov 28, 2025 | 02:45 AM
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2015 E400 Sedan
bleed again...
Start farthest from MAster cylinder and work your way closer so
RR - LR - RF - LF

Not sure but did it have ABS back then?
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Old Nov 28, 2025 | 05:03 AM
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Yes, bled the brakes furthest from master cylinder and worked forward. Yes the car has ABS brakes.

Thanks
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Old Nov 29, 2025 | 02:51 AM
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Have you checked master cylinder for internal leakage?
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Old Nov 29, 2025 | 07:55 AM
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No. But have just ordered a new one, as it seems this could be the problem. Thank.
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Old Dec 21, 2025 | 01:07 PM
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Just fitted the new master cylinder and new reservoir. Re-bled the whole system twice, back to front but has made no difference and I still have a long pedal. There is no air in the system at all. Could it be something to do with ABS pump?
Dave
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Old Dec 22, 2025 | 02:47 AM
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It seems to be the only thing left....

OR normal?
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Old Dec 22, 2025 | 11:22 PM
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NGL450 w/EORP, S550
Make sure the bleeder screw on the caliper is on the top and not the bottom.

Ask me how I know.
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Old Dec 29, 2025 | 02:36 PM
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OP, please confirm
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