benchbleed

africanguru · Posted: Fri Dec 19, 2014 1:28 pm Post subject: benchbleed

how important is a benchbleed
if at all

Eric&Barb · Posted: Fri Dec 19, 2014 1:32 pm Post subject:

Have had a problem with it on occasion. Easier to just bleed it on the VW. Open bleeder and have helper push down on the pedal. Once pedal is down close the bleeder, have helper let up on the pedal slowly which will suck in the brake fluid into the MC. Repeat on other axle till you get brake fluid pumping out. Then bleed normally for dual MC starting with front axle and fully tightened brake shoe adjusting stars.
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In Stereo, Where Available!

Q-Dog · Posted: Fri Dec 19, 2014 3:30 pm Post subject:

Though not necessary, a proper bench bleed will assure you that a master cylinder is good before you put it on the car.
_________________
Brian

'69 Dune Buggy
'69 Beetle Convertible
'70 Beetle

africanguru · Posted: Fri Dec 19, 2014 3:31 pm Post subject:

well, benchbleed didnt help.
had brakes to the bottom of the driveway, then they dissapeared again

is there any way of telling if one of my wheel cilynders are out

Eric&Barb · Posted: Fri Dec 19, 2014 5:54 pm Post subject:

Yes, the cylinder will most likely leak brake fluid.

Double check any connections you took apart to make sure they are tight.
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In Stereo, Where Available!

D/A/N · Posted: Fri Dec 19, 2014 7:12 pm Post subject:

As if searching didn't yield 290 threads:

http://www.thesamba.com/vw/forum/search.php?search_keywords=bench+bleed&search_forum=3

africanguru · Posted: Fri Dec 19, 2014 7:51 pm Post subject:

Joey · Posted: Sat Dec 20, 2014 6:43 am Post subject:

Adjust all the brake shoes so they are snug against the drums.

Start the bleeding process with the FRONT brakes FIRST then do the rear brakes.

Re-adjust the brake shoes.
_________________
Joey

‘60 Kombi - '74 Bus - '79 Panel - '65 Beetle

gt1953 · Posted: Sat Dec 20, 2014 7:30 am Post subject:

What has worked for me is to install it in the car, leave the lines off and fill reservior. Yes it is a freaking mess. When fluid is pouring out install lines. Then start bleeding procedure. There are many ways to skin a rabbit.
_________________
Volkswagen: We tune what we drive.
Numbers Matching VW's are getting harder to find. Source out the most Stock vehicle and keep that way. You will be glad you did.

72 type 1
72 Squareback
({59 Euro bug, 62, 63, 67, 68, 69, 73 type ones 68 & 69 type two, 68 Ghia all sold})

MacLeod Willy · Posted: Sat Dec 20, 2014 8:04 am Post subject: brakes

Once the system is bled properly you will have a solid and high pedal, the smallest of leaks will fad that pedal so fast. Dry all the connections then have someone else put as much pressure as you would use in a panic stop, then some. You look at every connection and you will find your leak! If there are absolutely no leaks and your brakes are installed and adjusted properly, the MC is likely your problem. Use a brand new master, not rebuilt

60ragtop · Posted: Sat Dec 20, 2014 9:32 am Post subject:

http://www.thesamba.com/vw/forum/viewtopic.php?t=614841
the problem appears to be fixed Wink

_________________
Rick
Certified Mechanic by the State of Michigan in 1977
ASA certified in 1987
Certified Hunter Wheel Alignment Master Technician 1986


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