Brake Booster Vacuum Hose

Hoody · Samba Member Joined: November 28, 2007 Posts: 1948

Contact Scott at German Supply. He sells the valves and I am sure he has done this swap more times than most. You will only get one chance to do it right. With 35 year old plastic you are very wise to ask for advice. Perhaps he will chime in. The way those valve ends are they are meant to almost be a one time install. Are you sure the check valve is shot? I would not put any direct heat to the plastic tubing without first hearing from someone who has made the mistakes and knows exactly how to do it correctly. Good luck!

kinggeorge13

Hi guys. I have a problem so simple, I just cannot figure out the best/safest way to do it. I need to replace the check valve in the vacuum hose that goes to the brake booster. 1975 Westfalia camper but it has a 2.0 Litre Westy engine in it. The valve is located right over the engine and the vacuum hose is the original fairly hard plastic black hosing. One end over the valve stem (engine side) has a clamp, the other side does not. Where the stems are rammed into the hoses, the hoses are stretched plenty wider than the rest of the hosing. Therein lies my problem. How do I get that hose off the valve stems/connectors? I removed the one clamp but I can tell you, pulling/wiggling lots has gained nothing. I sure don't want to damage those hoses. I suppose I could go at it with a hair dryer to try and soften it but surely guys in repair garages don't pull out a hair dryer? Thanks!

aeromech · Posted: Sat May 28, 2011 3:02 pm Post subject:

Don't forget the black rubber seals/bushings that go in the bell shaped ends of the hose. They are very similar to the ones used in the plastic brake fluid hose coming from the reservoir.
_________________
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dubluvv · Posted: Sat May 28, 2011 2:59 pm Post subject:

OK, got a hard plastic hose from aeromech. It's not a two-piece one but I think I can at least make it work with some 15/32" hose attached at the other end. Thanks for all of the input.
_________________
-Mitch

'76 Westy 2.0L FI "Lucy" Project Thread
'84 Rabbit L Diesel - Potential Greasecar Project

[quote="chazz79"]"Aw honey, I got another one of those bay-bus things on my shoe again...dammit"[/quote]

aeromech · Posted: Fri May 27, 2011 9:11 pm Post subject:

Yeah, My local VW Parts House only stocked one. I bought the last one at $2.95. The one I got has the recesses in the rim.
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound

germansupplyscott · Posted: Fri May 27, 2011 8:34 pm Post subject:

dubluvv · Posted: Fri May 27, 2011 4:43 pm Post subject:

Thank you all for the info- I have PM'd aeromech and we will see if I can get one from him. I would ideally like to have the original.

I have inquired about it at Bustedbus recently and Chris did not have any there.

Mitch
_________________
-Mitch

'76 Westy 2.0L FI "Lucy" Project Thread
'84 Rabbit L Diesel - Potential Greasecar Project

[quote="chazz79"]"Aw honey, I got another one of those bay-bus things on my shoe again...dammit"[/quote]

SGKent · Posted: Fri May 27, 2011 10:09 am Post subject:

aeromech · Posted: Fri May 27, 2011 10:05 am Post subject:

I'll be heading down to my local VW parts house this afternoon. I'll ask to look at both. I wonder if they are interchangeable?
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound

SGKent · Posted: Fri May 27, 2011 9:48 am Post subject:

The grommets look like dissolved electrical tape when they rot.

The part for the brake fill line is 211611833 C

The part for the servo hose on a late bay is 211611833 D

See here a photo of both: http://bughaus.com/type214.htm
_________________
“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin

aeromech · Posted: Fri May 27, 2011 9:45 am Post subject:

Last week I worked on a 1971 camper and the owner was complaining of brake fluid leaking. The bottom of the plastic tube where it connects to the lower MC reservoir didn't have any bushing installed at all. The upper reservoir had black electrical tape acting as the seal.
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound

SGKent · Posted: Fri May 27, 2011 9:38 am Post subject:

aeromech · Posted: Fri May 27, 2011 9:37 am Post subject:

replacement rubber bushings that go at the fittings.

Are those the same part or similar to the brake reservoir hard plastic tube rubber bushings?
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound

SGKent · Posted: Fri May 27, 2011 9:30 am Post subject:

Hoody · Samba Member Joined: November 28, 2007 Posts: 1948

Call Ken at the Bus co. or Chris at Busted Bus or Avery's aircooled or way out salvage. Get an original one used and be done with it.

aeromech · Posted: Fri May 27, 2011 6:40 am Post subject:

I might have the hard plastic hose that you need. Send me a pm.
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound

ser123ser · Posted: Fri May 27, 2011 6:20 am Post subject:

I just went throught this whole deal. the hard plastic tubes do not exist as new and any old ones will probably give up the ghost in a year or two then you will be chasing vac leaks.

buy the 15/32 hose and clamp it with new clamps. these are vac lines so you don't need reinforced rubber. cheapo water pump hose is fine. The metric stuff as noted on the Rattwell site is great if you can find any at any price. if you can't get the 15/32 then use 1/2 inch. the purist will laugh at me but it works when clamped and unlike the high pressure fuel lines that absolutely should be metric they wont catch your bus on fire.

just get the hose put it on and move on. I just installed my FI 2 litre engine and after weeks of looking i just put on the 15/32 and everything is just tits.

steve outstanding in my field

dubluvv · Posted: Fri May 27, 2011 6:03 am Post subject:

That is what I thought.

I have been trying to source the original tube for the better part of a year to no avail. Every Bus that I have found locally that is getting parted either had no booster hose at all or it is rigged up with any number of different hoses.

I guess I'll get some hose and some tubing for now and try and make it work.

Thank you all for the input!

Mitch
_________________
-Mitch

'76 Westy 2.0L FI "Lucy" Project Thread
'84 Rabbit L Diesel - Potential Greasecar Project

[quote="chazz79"]"Aw honey, I got another one of those bay-bus things on my shoe again...dammit"[/quote]

busman78 · Posted: Thu May 26, 2011 8:09 pm Post subject:

Scott nailed it, a piece of tube will, the hose has too big an OD to fit in the tee.

germansupplyscott · Posted: Thu May 26, 2011 8:00 pm Post subject:


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