| Author |
Message |
pgtips
Samba Member
Joined: July 23, 2009
Posts: 860
Location: essex
|
 Posted: Fri Oct 22, 2021 2:20 am Post subject: Fixed - Brake Pedal Travel |
 |
|
Hi,
I hope someone can give me a bit of a sanity check on a couple of points.
I have a 75 westy with disks.
I have recently changed my brake MC as it was faulty. My brakes must have been working with issues for a while, blown MC seals.
I have fitted a new cylinder and bled manually with other half pressing pedal. Once done though the pedal seems to travel before anything happens, maybe a third of the way. The brakes work, stops ok etc.
Searching the forums I need to be clear in my head these points if someone who knows can help.
Couple posts from SGK
| Quote: |
3 average pumps on the brake pedal, hold and then you loosen the screw. Keep a hose on the bleeder into a bottle. Then you tighten before he lifts his foot to do it again.
Without a booster the brakes should be as hard as a rock to push. |
I didn't know about the 3 push method.
I just had someone push when bleed valve open, hold, tighten, lift. open, push, hold, tighten lift etc but have I been doing it wrong. (and I wondered if this should go in stupid Q thread but its poss not that stupid).
Is this def 110% the right way ? (not to question you SGK but i just want to be sure).... 3 pumps first with closed bleed valve and hold pedal, then open bleed valve, hold down pedal, then close bleed valve and release pedal. Is that it?
Q2. Upper and lower bleed valves on the front, one is to drain down, one is to bleed. I made notes in my manual but then read a paragraph which contradicted my notes so I need to get this right, which one is 110% the bleed valve on front calipers.
Last Q. Becuase I have had faulty brakes for a while I don't know what 110% good should feel like.
Before start
Should it be rock hard to start, no travel.
After start
Brake booster kicks in, any travel at that point before engaging?. What should I be experiencing.?
If I have travel might it be an adjustment needed elsewhere?, I'm putting this all on brakes but maybe not. I thought disks self adjusted. I did come across this in the posts from kreemoweet but I know its not completely true
| Quote: |
Your pedal should never go to the floor. Means you have massive amounts of air in the system
|
I know it could also be faulty MC seals but assume MC is replaced it makes me think about is brake pedal travel now down to air?
As always thanks in advance
_________________
1975 1.8l FI Auto Westy - Subaru converted
1971 356 kit 1600 TP - semi/stickshift
1971 1302 LS - semi/stickshift
Trim ring info here -> http://www.thesamba.com/vw/forum/viewtopic.php?t=559668
http://www.thesamba.com/vw/forum/viewtopic.php?t=451210
http://www.thesamba.com/vw/forum/viewtopic.php?t=479721
Last edited by pgtips on Fri Oct 22, 2021 9:35 am; edited 1 time in total |
|
| Back to top |
|
 |
bigbore
Samba Member
Joined: December 19, 2003
Posts: 3297
Location: Wasilla Alaska
|
| Posted: Fri Oct 22, 2021 3:26 am Post subject: Re: Brake Pedal Travel |
|
|
heres how I do it I have my helper pump 5 times and hold I loosen the bleeder fluid comes out as the helper is still pushing/holding I tighten the bleeder do this till no air comes out. to tell if you got it start the engine pump the peddle is if it stays the same level or pumps up if it pumps up you still have air bleed again or your rear shoes are way out of adjustment so make sure they are right before you do all this bleeding.
_________________
where its cold and snowy |
|
| Back to top |
|
|
crownline
Samba Member
Joined: September 10, 2010
Posts: 593
Location: Northwoods of WI
|
| Posted: Fri Oct 22, 2021 3:52 am Post subject: Re: Brake Pedal Travel |
|
|
The reason you pump the pedal 3 times and hold before loosening is to pressurize the system including mostly air.
_________________
1972 Bus 1700 cc Single Carb. But not a progressive.
Barelymuvin
Wish I still had the ones I got rid of.
"It"s got some dings and dents and neither of us is going to SEMA."(Update, I went to SEMA in 2019 but the Bus stayed home)
[url=http://www.vw-mplate.com/mplate-8446.png]Click to view image[/URL] |
|
| Back to top |
|
|
pgtips
Samba Member
Joined: July 23, 2009
Posts: 860
Location: essex
|
|
| Back to top |
|
|
|
