It is currently Sat May 26, 2018 11:24 am

All times are UTC - 5 hours [ DST ]


Forum rules


Please click here to view the forum rules



Post new topic Reply to topic  [ 9 posts ] 
Author Message
PostPosted: Sat Sep 19, 2009 2:22 pm 
I am about to do a major brake job on my 1961 B (Ch 117190), including all new wheel cylinders and a rebuild on the master. When the mechanical work is done, I plan to use my homemade "universal" pressure bleeder to fill and bleed the system so I can do it alone. This requires modifying a master cyl. cap for the pressure hose. I don't have a spare master cylinder cap for my present situation, and don't necessarily want to drill a hole in a good original one (who would?), but I have heard that an "early" VW bus master cylinder cap will work as a substitute. Anyone have any further info, guidance or suggestions? Like what year(s) constitute an "early" bus?


Top
  
Reply with quote  
 Post subject:
PostPosted: Sat Sep 19, 2009 4:03 pm 
356 Fan
User avatar

Joined: Sun Mar 30, 2008 12:11 pm
Posts: 1615
Location: Los Angeles County
Yes, they should interchange. My Motive Products brake bleeder works on all my old cars (see below). Motive Products sells power bleeder adapters that could save you some fabrication.

A VW Bus master cylinder cap [211611351B] is $6.00 from Wolfsbürg West. Motive Product's 1100 adapter is $21.95, the metal 1109 adapter is $34.95.

That's assuming your 356, like mine, has a plastic master cylinder. If my car's was changed it was before it came into my hands.

_________________
 

Jim Alton
Los Angeles County, CA
1958 Porsche 356A Cabriolet
1965 Porsche 911 Coupé
1966 Volkswagen Type 2
2003 Porsche 986 Boxster


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Sat Sep 19, 2009 4:16 pm 
Jim,

Thanks for the info and the links. The Motive bleeder is pretty much what I made, except mine has a connection for my compressor. That way, I can move from corner to corner without coming back to the trunk (or engine compartment for "backwards" autos) to restore the pressure.

There was a big VW parts retailer in Anaheim, but I'm having some trouble locating them. I've found BFYObsoleteParts, but it appears to be a different outfit and they don't list the cap on their website. So maybe I'll do a web order from Wolsberg West.

Thanks again.


Top
  
Reply with quote  
 Post subject:
PostPosted: Sat Sep 19, 2009 6:33 pm 
356 Fan
User avatar

Joined: Sun Mar 30, 2008 12:11 pm
Posts: 1615
Location: Los Angeles County
I've had my bus for a bit over 20 years and many of the old VW suppliers seem to have shrunk or gone away but Wolfsbürg West is bigger than ever.

I'm not trying to criticize your efforts, but for the sake of other folks reading this, there's not much need to repressurize the Motive Products power bleeder while doing all 4 wheels. Connect it to the master cylinder (don't forget to remove the screen from the master cylinder or you'll just pump clean brake fluid onto the floor), pump it to 10 or 15 psi and you're good to go with maybe once giving the pump some strokes during the whole operation.

_________________
 

Jim Alton
Los Angeles County, CA
1958 Porsche 356A Cabriolet
1965 Porsche 911 Coupé
1966 Volkswagen Type 2
2003 Porsche 986 Boxster


Top
 Profile  
Reply with quote  
PostPosted: Sat Sep 19, 2009 6:42 pm 
356 Fan

Joined: Tue Mar 25, 2008 6:06 pm
Posts: 86
Some pressure bleeders can introduce air into the system at the master cylinder (especially if the fluid level drops too low in the M/C before it's noticed) and create abiguity at the wheel cylinder by always producing bubbles in the fluid (as well as the system). I use a bleeder that sucks the fluid out of the wheel cylinder with no such problems except for the little bit of air drawn in around the loosened bleeder valve. Don't remember who made it but it was considerably more expensive than the pressure type...........Dale


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Sun Sep 20, 2009 2:14 pm 
Dale,

I appreciate your comments about the possibility of introducing air during the bleeding process, but that tends to happen when the bleeder only provides air pressure to the master cylinder reservoir and you must frequently check the status of the fluid level.

My pressure bleeder forces brake fluid, under pressure, to the master cyl. reservoir, so that no air is introduced into the car's braking system.


Top
  
Reply with quote  
PostPosted: Mon Jan 15, 2018 12:46 am 
356 Fan
User avatar

Joined: Wed Nov 25, 2015 9:12 pm
Posts: 605
Location: Sunshine Coast Australia
Reviving this old thread. I needed a cap for my Motive Pressure Bleeder, to avoid having my 'assistant' sit in the car for 20 mins complaining. I couldn't find one that fitted locally so made up an adapter using an old shock absorber rubber and few bits with threaded ends and nuts on the bracket. Sealed well on the reservoir at 15psi and did the job. Used the new (?) Bendix Dot 4 fluid that is blue and changes colour as the fluid picks up moisture in time.


Attachments:
IMG_20180115_142951.jpg
IMG_20180115_142951.jpg [ 496.55 KiB | Viewed 310 times ]

_________________
Merv
TYP356
1963 356B T6
1968 911 SWB
Top
 Profile  
Reply with quote  
PostPosted: Wed Jan 17, 2018 1:47 pm 
356 Fan
User avatar

Joined: Sun Mar 30, 2008 12:11 pm
Posts: 1615
Location: Los Angeles County
Blue brake fluid is famously illegal in the USA.

_________________
 

Jim Alton
Los Angeles County, CA
1958 Porsche 356A Cabriolet
1965 Porsche 911 Coupé
1966 Volkswagen Type 2
2003 Porsche 986 Boxster


Top
 Profile  
Reply with quote  
PostPosted: Thu Jan 18, 2018 3:22 am 
356 Fan
User avatar

Joined: Wed Nov 25, 2015 9:12 pm
Posts: 605
Location: Sunshine Coast Australia
It is useful. I should buy a few more lots then ...

_________________
Merv
TYP356
1963 356B T6
1968 911 SWB


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 9 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: David Miller


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB® Forum Software © phpBB Group