Search found 168 matches

by Robert Bondi
Sat Jul 23, 2016 3:07 pm
Forum: Tech Forum
Topic: Braking balance
Replies: 24
Views: 2412

All good suggestions here, but I've unfortunately done all these for the most part. Recall where I'm at. Both calipers are new BMW parts. Pulled the wheels and the pads after the test drive with left pulling while braking. Inspection with pedal action showed hydraulic action to the right caliper eve...
by Robert Bondi
Sat Jul 23, 2016 2:39 pm
Forum: Tech Forum
Topic: Braking balance
Replies: 24
Views: 2412

Robert, The blue e12 factory manual section 34-00/2 says "Bleed all 3 bleeder screws A, B and C. Always bleed both lower pistons in sequence B-C." I interpret that as lowest to highest in elevation. (A is the upper screw, B inner and C outer) I know we're drilling down to tiny details here - grease...
by Robert Bondi
Thu Jul 21, 2016 5:47 am
Forum: Tech Forum
Topic: Braking balance
Replies: 24
Views: 2412

What was the wear pattern like on the pads? I had a a blown seal on a front piston. The car pulled to the other side and the pad with the offending piston was thicker/less worn than the pad on the opposite side of the rotor. Randy, There's not enough mileage to establish a wear pattern. After one 3...
by Robert Bondi
Thu Jul 21, 2016 5:38 am
Forum: Tech Forum
Topic: Braking balance
Replies: 24
Views: 2412

JodyStevens wrote:Bias valve is located right above the frame rail below the brake booster on the driver side(assuming LHD). Not sure if they go bad, but they are not serviceable or adjustable.
Yes, the pressure regulator can go bad. In my case, it just started leaking.
by Robert Bondi
Thu Jul 21, 2016 5:35 am
Forum: Tech Forum
Topic: Braking balance
Replies: 24
Views: 2412

"Different responses" between calipers indicates semi-seized piston or pistons. But these are new OEM from BMW? They come with a 2 year warranty if defective. How did you measure the response? How dramatic is the "pull"? If it pulls hard, then likely caliper / pad / rotor related. A mild pull could...
by Robert Bondi
Wed Jul 20, 2016 5:21 am
Forum: Tech Forum
Topic: Braking balance
Replies: 24
Views: 2412

I have found a complete rebuild of all 4 calipers is helpful if there is no recollection of this being done in the last 20 years. Some of the pucks just get frozen in place which renders that one inoperative and throws the balance totally off. There is nothing like the first drive on a set of fresh...
by Robert Bondi
Thu Jun 02, 2016 5:10 am
Forum: Tech Forum
Topic: Door sealing trim
Replies: 3
Views: 557

Re: Door sealing trim

Hello All, I'm planning to replace the rubber front door sealing trim - #1 in the diagram. Anyone have experience removing the door trim to do the job? Of course the factory manual makes it look so easy but reality looks very different. I do have the new parts btw. Thanks. http://www.realoem.com/bm...
by Robert Bondi
Sun May 08, 2016 11:32 pm
Forum: Tech Forum
Topic: Fuel injectors not getting signal
Replies: 8
Views: 1302

I'm confused on what you have. 1979 should be a 528i; 530i up through 1978. Are you getting a signal at any injector?
by Robert Bondi
Wed May 04, 2016 3:52 am
Forum: Tech Forum
Topic: Ron Davis aluminum radiator ...
Replies: 15
Views: 3214

I finally got that radiator picture to display inline. I had a little fun with white rouge and a buffing wheel on the radiator frame and side tanks.
by Robert Bondi
Sun May 01, 2016 11:59 pm
Forum: Tech Forum
Topic: Ron Davis aluminum radiator ...
Replies: 15
Views: 3214

I got a Ron Davis E28 aluminum radiator in 2014. I ran the stock E28 radiator from 1999-2014, but started to worry about the plastic side tanks. It was about $800 in 2014. The quality of the radiator looked great to me, although it took about 3x longer than estimated to actually make it and it requi...
by Robert Bondi
Sat Mar 19, 2016 6:02 pm
Forum: Tech Forum
Topic: Steering Column U Joint
Replies: 13
Views: 1582

I did this job a couple of years ago. That was a side journey while rebuilding the entire front suspension including removal of the subframe and separation from the steering box. Knowing that the coupling was still available, removal of the rubber coupling ended up being destructive. The rubber was ...
by Robert Bondi
Sat Feb 27, 2016 4:05 pm
Forum: Tech Forum
Topic: Tips for front sway bar bushing replacement?
Replies: 7
Views: 967

Unbelievable...the 17mm wrench from the toolkit TOTALLY works. Success! Thank you! Yeah, and it's got to be the original 17mm box. New versions of the tools in the tool kit can be bought today; however, they've overdesigned many of them so that they don't work in half the applications they're neede...
by Robert Bondi
Sat Feb 13, 2016 12:04 am
Forum: Tech Forum
Topic: Sealant for windshield washer bottle hoses connections?
Replies: 6
Views: 878

Lot's of good suggestions already.

I've replaced a lot of that washer fluid tubing with translucent silicone tubing rather than clear vinyl. Silicone is much more pliable and doesn't really harden over time like the rubber or vinyl, so it tends to keep a good seal on the barbs.
by Robert Bondi
Fri Feb 12, 2016 11:58 pm
Forum: Tech Forum
Topic: What wires pass through a grommet in the pedal bracket?
Replies: 2
Views: 573

The idiot light switch for low oil pressure is one wire that passes through that grommet (brown wire). I followed that routing with additional dashboard gauge wiring, so I've got additional non-stock wires running through there too. Also, the back up light switch wires is another good guess, as alre...
by Robert Bondi
Thu Nov 12, 2015 12:04 am
Forum: Tech Forum
Topic: M535i oil cooler questions
Replies: 7
Views: 1536

PatinaBeforePolish wrote:Robert,

Very interesting, thanks for the pics. How did you determine the flow in the block ports?
Yeah, that would have been a bit tougher to figure out. For the block, the BMW blue factory manual shows the flow pattern associated with the oil filter element.