Washer hose spare tire fitting Options

[bbrock]

I know this is a futile quest since most of you think it is only civilized to convert the pneumatic windshield washer to an electric pump. But c'mon, that has to be the most ridiculously quirky quirk of a car dripping with quirkiness. Anything that stupid has to be worth keeping... right?

But I have a problem. The seal inside the fitting that screws onto the spare tire was shot and leaking all the air out of the tire. That wasn't going to work so I dug it out and and replaced it with a stack of neoprene washers that looked to be the right size and sealed to each other with a smear of RTV. It worked... almost. It seals tight unless you bend the hose to the side at all and then it leaks. Of course, mounting the tire in the frunk with the hose on bends it to the side. So what to do? Anyone have suggestions on how to seal this thing, or where a replacement might be found? New hoses with fittings are NLA and the ransom demanded by folks with used ones seems steep considering they might very well leak also. Thoughts? (IMG:style_emoticons/default/confused24.gif)

[wonkipop]

i have found this - i might chase up myself.

from M & T manufacturing. VW restoration parts.
its a new part they make themselves that is close to the original part.
but is the whole thing cap, hose and tyre fitting.


https://www.mtmfg.com/part/view/window-wash...rt=311-955-979B

interesting find! well i have the electric pump oem 911 from 914sixer, and put in the converted switch in the column , from Carmagic, and now the lever when pulled will push the switch and trigger the pump, that is not installed yet, but hope to soon, no more water inthe lap out of the steering column for me!

i zip tied the hoses on to the nozzles in the steering column valve.
a solution that worked on my old type 3 in the 80s.
also you got to use the decent quality hose.
the hose lasts anything from 10 to 20 years depending on where it is.

a solution for bbrock to consider is how i used to work it on my type 3 and how i could work it on the 914 which is not to connect the hose permanently to the spare. i had similar problems from time to time on the old type 3 where a valve would play up and drain the spare. so i got into a routine with the car of filling the bottle, pressurizing off the spare and the disconnecting and then setting the spare to correct pressure. once a month.
since you have to depressurize to top up the bottle it was just part of the routine of making sure there was liquid in it.

i can certainly pressurize my system off the spare, but for some reason it has drained the spare so the leak must be between the bottle and the spare much as bbrock is talking about. the rest of the system including the bottle has stayed pressurized. its a slow leak in that hose to the tyre and probably either the connection to the tyre valve or the pressure limited spring valve and its connections in the hose. the springvalve is at the join between the bottle hose and the tyre hose. there are at least three places it can misbehave in that run of hose.

i have never really understood how the spring valve actually works, never having taken one apart. its the thing that is supposed to stop drawing pressure once the tyre falls to 28 lbs. except they pretty much started playing up after only a few years, even in new vws. deadly when you go to reach for that spare tyre and its dead flat.

i've got a feeling the M&T part when you look at it closely is not quite the full part.
its the bottle cap with the little white press tab in it that opens up the line once you tighten the cap on and its a straight connection to the tyre (which is the bit bbrock wants). there is no in line pressure limiting valve. thats what is meant by the disclaimer "not to original spec" when you read their fine print and study the image? to use it - would require the routine i describe above of pressurizing and then unscrewing from the tyre. you can always plumb in the spring valve from an original set up - assuming its not haywire as well.

[bbrock]

i have found this - i might chase up myself.

from M & T manufacturing. VW restoration parts.
its a new part they make themselves that is close to the original part.
but is the whole thing cap, hose and tyre fitting.


https://www.mtmfg.com/part/view/window-wash...rt=311-955-979B

interesting find! well i have the electric pump oem 911 from 914sixer, and put in the converted switch in the column , from Carmagic, and now the lever when pulled will push the switch and trigger the pump, that is not installed yet, but hope to soon, no more water inthe lap out of the steering column for me!

i zip tied the hoses on to the nozzles in the steering column valve.
a solution that worked on my old type 3 in the 80s.
also you got to use the decent quality hose.
the hose lasts anything from 10 to 20 years depending on where it is.

a solution for bbrock to consider is how i used to work it on my type 3 and how i could work it on the 914 which is not to connect the hose permanently to the spare. i had similar problems from time to time on the old type 3 where a valve would play up and drain the spare. so i got into a routine with the car of filling the bottle, pressurizing off the spare and the disconnecting and then setting the spare to correct pressure. once a month.
since you have to depressurize to top up the bottle it was just part of the routine of making sure there was liquid in it.

i can certainly pressurize my system off the spare, but for some reason it has drained the spare so the leak must be between the bottle and the spare much as bbrock is talking about. the rest of the system including the bottle has stayed pressurized. its a slow leak in that hose to the tyre and probably either the connection to the tyre valve or the pressure limited spring valve and its connections in the hose. the springvalve is at the join between the bottle hose and the tyre hose. there are at least three places it can misbehave in that run of hose.

i have never really understood how the spring valve actually works, never having taken one apart. its the thing that is supposed to stop drawing pressure once the tyre falls to 28 lbs. except they pretty much started playing up after only a few years, even in new vws. deadly when you go to reach for that spare tyre and its dead flat.

i've got a feeling the M&T part when you look at it closely is not quite the full part.
its the bottle cap with the little white press tab in it that opens up the line once you tighten the cap on and its a straight connection to the tyre (which is the bit bbrock wants). there is no in line pressure limiting valve. thats what is meant by the disclaimer "not to original spec" when you read their fine print and study the image? to use it - would require the routine i describe above of pressurizing and then unscrewing from the tyre. you can always plumb in the spring valve from an original set up - assuming its not haywire as well.

Nice find on that M&T part and good summary of the system. One thing I think is off though. I'm pretty sure the pressure regulator that prevents the tire (a.k.a. tyre (IMG:style_emoticons/default/biggrin.gif) ) from going flat is in the bottle cap. The spring fitting you are referring to is just a standard Schrader valve That lets you refill the spare tire without having to did it out from under the frunk floor board. Mine was leaking so I took it apart and can confirm it just has a standard Schrader valve core inside. I picked up a replacement at my FLAPS and no more leak.

For $6 I'm going to try that Schrader hose barb first (forgot to include the link so here it is: https://www.amazon.com/gp/product/B005DVE6Y...HXNCI&psc=1 I think Mark is right that his hose material will stretch over the barb. That stuff seems very versatile. If that doesn't work, I'll probably order the M&T part. You're right it isn't quite the complete 914 kit (being for a beetle), but it does have the fitting I need. I might try contacting them to see if they can sell just that fitting.

Thanks for all the input here. It's nice to know there are some fellow fans of this PITA system. As for the leaking on the lap. I think it is a feature. When you are as ugly as me, your best option for talking my way out of a ticket is to step out of the car looking like I just peed my pants. "Why yes officer, I was in a hurry." (IMG:style_emoticons/default/av-943.gif)