ZVOLV
<Master Tech>
- Joined
- Nov 19, 2002
- Location
- California
Many/most "Do It Yourself" guys do brakes wrong and don't lube the pins or the pads
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Many/most "Do It Yourself" guys do brakes wrong and don't lube the pins or the pads
Over the past 5 years on my 88 744 I've had a similar problem. Perhaps try the following.
Jack the entire front end off the ground. Ensure that the front wheels spin freely / no drag (mine was dragging HARD on the front P/S). Jack the entire rear end off the ground. In neutral / no PB, ensure the rear wheels spin freely / no drag. Although I understand that you replaced the front calipers, be sure to check the rear calipers as well. When you say you replaced the front calipers, what exactly was that? Reman'ed units with all new guide pins and hardware?
IMHO get each of the 4 wheels off the ground and test the caliper for dragging.
Btw, my dragging luckily went away when I put on S60R front calipers / rotors / all SS hoses. Although the rear hasn't been rebuilt, that could still be an issue for me at some point.
Many/most "Do It Yourself" guys do brakes wrong and don't lube the pins or the pads
Many shops put lube in the pins that swell the rubber parts and cause binding, or put lube on pins meant to be run dry and attract dirt and wear out the parts.
Brake hoses deteriorate internally resulting in a one way check valve type effect.
That sounds very similar to mine. If this issue shows back up after this, the 4 wheels in the air test will be next. A brake upgrade could be in the works if I can't sort anything out else.