check valve

randywebb · Posted: Wed Apr 17, 2013 9:56 pm Post subject: check valve

For a 2.1L engine, does the vacuum hose to the brake power booster have a check valve in it?

Bentley shows one near the intake runners but their pic must be for a 1.9L engine (?)
_________________
1986 2.1L Westy 2wd Auto Trans.

kamzcab86 · Posted: Wed Apr 17, 2013 10:15 pm Post subject:

I seem to recall there one being on my 2.1L, right after a short (like 1-2" long) hose off the intake. Think

I can verify tomorrow, if no one else confirms by then.
_________________
~Kamz Anxious

1986 Cabriolet: www.Cabby-Info.com
Blue Vanagon

1990 Vanagon Westfalia: Old Blue's Blog
2016 Golf GTI S
"Real knowledge is to know the extent of one's ignorance." - 孔子

syncrodoka · Posted: Wed Apr 17, 2013 10:23 pm Post subject:

Driver's side just at the firewall under the black box with the vacuum diagram on it.

randywebb · Posted: Wed Apr 17, 2013 10:43 pm Post subject:

thx - Bentley 47.10 - they say to check it out periodically
_________________
1986 2.1L Westy 2wd Auto Trans.

kamzcab86 · Posted: Thu Apr 18, 2013 11:56 am Post subject:

Dug up an old photo, in case anyone else needs an image to reference. Red arrow is pointing to the check valve:

Image may have been reduced in size. Click image to view fullscreen.

(Disregard the filth. This was taken shortly after buying the van and just before the engine got cleaned... probably for the first time in its life.)
_________________
~Kamz Anxious

1986 Cabriolet: www.Cabby-Info.com
Blue Vanagon

1990 Vanagon Westfalia: Old Blue's Blog
2016 Golf GTI S
"Real knowledge is to know the extent of one's ignorance." - 孔子

randywebb · Posted: Thu Apr 18, 2013 12:53 pm Post subject:

Thanks - now I won't be searching in vain by the firewall...

Does it really need to be checked as per Bentley, or would a malfunction be obvious from some other behavior of the Van?
_________________
1986 2.1L Westy 2wd Auto Trans.

syncrodoka · Posted: Thu Apr 18, 2013 1:04 pm Post subject:

Ha, i moved it for the conversion and forgot about it.

MarkWard · Posted: Thu Apr 18, 2013 1:07 pm Post subject:

I think if you start the engine and run it for about a minute and then shut it off, depress the brake pedal a few times. You should have more resistance with each application of the pedal until there is no assist. That would indicate the valve is working and there are no other vacumn leaks. I think you get about 5 assisted applications with the engine off. Sort of a fail safe for long downhills if the engine quit.
_________________
☮️

Jake de Villiers · Posted: Thu Apr 18, 2013 1:10 pm Post subject:

kamzcab86 · Posted: Thu Apr 18, 2013 3:32 pm Post subject:

dasilva · Samba Member Joined: July 27, 2020 Posts: 69

Is there a trick for getting the check valve on the brake booster line re-installed?

I'm doing a Bostig conversion on my 1989 Westfalia. Getting the valve re-installed seems...tricky! Too much heat and the plastic on the check valve body melts. Not enough heat and the nylon line isn't widening enough the accept the valve.

Right now, I placed the valve in the freezer. Will try to warm the line tomorrow by placing under the escaping steam from the kettle.

Does anyone else have other tips I am unaware of? WD-40?? Dishwasher soap??

Any help appreciated.

the joker · Samba Member Joined: October 12, 2006 Posts: 1287

Hot / Med hair dyer, or, low heat gun , leather gloves and patience Cool

DuncanS · Posted: Sun Nov 07, 2021 9:10 am Post subject: Re: check valve

Or dip in boiling water.


Hello! Log in or Register \| Help \| Donate \| Buy Shirts	See all banner ads \| Advertise on TheSamba.com

	Forum Index -> Vanagon	All times are Mountain Standard Time/Pacific Daylight Savings Time
Page 1 of 1