Brakes and abs question
03-19-2019, 07:52 AM
#11
Senior Member
Join Date: 08-03-2010
Location: Lake Ronkonkoma, N.Y.
Posts: 3,564
And what seals will be damaged ?
Thanks
03-19-2019, 10:16 PM
#12
Member
Join Date: 10-18-2013
Location: North Dakota
Posts: 77
Afaik, the system may not be serviceable. If you have a manual, you should be able to see if it is serviceable and what parts it would need.
http://my.cardone.com/techdocs/PT%2012-0001.pdf
http://my.cardone.com/techdocs/PT%2012-0001.pdf
03-20-2019, 05:37 PM
#13
Senior Member
Join Date: 06-07-2011
Location: SE Mich
Posts: 2,180
When I was doing competitive stuff (different vehicle), I bled my brakes a lot. 4-5 times a year. I got speed bleeders and did it myself. However, if you aren't building up racetrack-type temperatures, or dumping cocoa powder into the reservoir, I wouldn't sweat it. If your pedal feel remains good, you are fine.
A vote for "if ain't broke, don't fix it."
03-20-2019, 06:24 PM
#15
Senior Member
Thread Starter
Join Date: 09-03-2006
Location: chicago
Posts: 498
There are none in that system. We are putting them into the MC reservoir just now on new models, and that is just to keep crud from getting down into the lines. There is nothing within the system.
When I was doing competitive stuff (different vehicle), I bled my brakes a lot. 4-5 times a year. I got speed bleeders and did it myself. However, if you aren't building up racetrack-type temperatures, or dumping cocoa powder into the reservoir, I wouldn't sweat it. If your pedal feel remains good, you are fine.
A vote for "if ain't broke, don't fix it."
When I was doing competitive stuff (different vehicle), I bled my brakes a lot. 4-5 times a year. I got speed bleeders and did it myself. However, if you aren't building up racetrack-type temperatures, or dumping cocoa powder into the reservoir, I wouldn't sweat it. If your pedal feel remains good, you are fine.
A vote for "if ain't broke, don't fix it."
03-20-2019, 10:14 PM
#17
Member
Join Date: 10-18-2013
Location: North Dakota
Posts: 77
Well Cat Man, not sure about your axe, but this info has been around a long time. If you don't care, then don't do it. But I didn't just make it up.
https://www.bobistheoilguy.com/forum...Number=2155122
https://www.bobistheoilguy.com/forum...Number=2155122
03-21-2019, 05:13 AM
#18
Senior Member
Join Date: 08-03-2010
Location: Lake Ronkonkoma, N.Y.
Posts: 3,564
Krunk
Done many brake jobs. No, I don't open the bleeder to retract the piston. And never have damaged the caliper or master cylinder.
The only "filter" I know of is a screen type basket on the top of some master cylinders.
And your quote " if there is crud in the system". The only "crud in the system that I know of is if the brake fluid absorbed moisture and the fluid turned brownish. Then flushing the system is required.
Done many brake jobs. No, I don't open the bleeder to retract the piston. And never have damaged the caliper or master cylinder.
The only "filter" I know of is a screen type basket on the top of some master cylinders.
And your quote " if there is crud in the system". The only "crud in the system that I know of is if the brake fluid absorbed moisture and the fluid turned brownish. Then flushing the system is required.
03-21-2019, 07:17 AM
#19
Member
Join Date: 10-18-2013
Location: North Dakota
Posts: 77
I've done many brake jobs, too. On abs, and non-abs systems. I have always opened the bleeder, and for good reason. Water is heavier than brake fluid, so where do you think it is going to sit? In the calipers, since they are the lowest point of the system. I've rebuilt calipers because people don't bother to bleed their brakes in timely fashions, especially if they live in humid climates. But, you do whatever.
https://books.google.com/books?id=mN...piston&f=false
https://www.knowyourparts.com/techni...rake-calipers/
https://itstillruns.com/how-to-chang...-12259264.html
But again, you do it how you want. I won't bother with this anymore. I've made my position clear and posted the reasonings behind it.
https://books.google.com/books?id=mN...piston&f=false
https://www.knowyourparts.com/techni...rake-calipers/
https://itstillruns.com/how-to-chang...-12259264.html
But again, you do it how you want. I won't bother with this anymore. I've made my position clear and posted the reasonings behind it.
03-21-2019, 08:59 AM
#20
Platinum Member
Join Date: 12-06-2009
Location: Alabama
Posts: 11,098
I say do whichever way you like. It's your car.
As far as water being heavier than brake fluid. If that's the case, then water would settle to the bottom of the caliper. BUT, the bleeder is on the TOP of the caliper. (although, I always assumed that moisture would mix with brake fluid and didn't separate)
Just saying. Not arguing the facts.
Fwiw. I was in the repair biz years ago. Done literally hundreds of brake jobs. Hardly ever opened a bleeder when replacing pads. I have opened many though if needing to bleed the system.
As far as water being heavier than brake fluid. If that's the case, then water would settle to the bottom of the caliper. BUT, the bleeder is on the TOP of the caliper. (although, I always assumed that moisture would mix with brake fluid and didn't separate)
Just saying. Not arguing the facts.
Fwiw. I was in the repair biz years ago. Done literally hundreds of brake jobs. Hardly ever opened a bleeder when replacing pads. I have opened many though if needing to bleed the system.