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Username Post: wiper vacuum lines        (Topic#4615)
Anonymous 

02-11-02 07:31 AM - Post#33995    

Got a ? about the wiper motor vacuum hose hook-up on my "new" 1950 BelAir. One line comes from the wiper motor into the dash. Another comes out of the dash and into the firewall to the manifold. Before it goes into the firewall there is a Y connector that obviously had a hose on it that goes somewhere. Had to plug the Y up so the engine would run smooth. Any helpful info about what else connects to the Y would be appreciated.

 
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mahalet 
Senior Member
Posts: 1023
mahalet
Age: 63
Loc: rio , brasil
Reg: 10-12-01
Re: wiper vacuum lines
02-11-02 11:13 AM - Post#33997    
    In response to Royer

Every chevy has the nozzle seat in the wiper mount. They were optional and installed in the firewall opposed to the voltage regulator.Does your car have thedouble vacuum switch, who operates the wiper and has a center small button for the washer?
There´s one electrical on ebay.
Mahar
Mahar
1951 Fleetline 2D, 261,3 spd, 3.55:1
1984 Chevrolet Caravan, made in Brasil
Iron Duke alcohol,5 sod, 122 hp


 
Anonymous 

Re: wiper vacuum lines
02-11-02 11:27 AM - Post#33998    
    In response to mahalet

Hi boots235,

My 1951 Chevy has the Y in the vacuum hose which ties back to the "Wiper Switch." Another hose then leaves from the "Wiper Switch" through the firewall to a "Vacuum Washer Pump and Bottle."

As Mahalet stated: "Every chevy has the nozzle seat in the wiper mount." This is a small button in the center of the wiper knob.

Look at the base of your windshield wipers on the outside and see if there are spray nozzles.

Also check the left side fenderwell inside the engine compartment and see if there are 4 small holes above the vent duct work. If you have these holes, then the car had a wiper washer sytem at one time.

If you don't have the glass reservoir and washer pump, they can easily be found on eBay.com between $30 & $70.

Good Luck with Your '50 Chevy.

------------------
Keith

1951 Chevy: http://1951chevy.homestead.com/1951chevy.html
Chevy Scrapbook for 1946-54: http://1946to1954chevys.homestead.com/chevyscrapbook.html
Chevy Resources:
http://1951chevy.homestead.com/ChevyResources.html

 
Royer 
Needs to Get Out More Member
Posts: 11411

Loc: Bloomfield Hills, Michiga...
Reg: 09-25-01
Re: wiper vacuum lines
02-11-02 10:36 PM - Post#33996    
    In response to

At this point, it is a bit of a guess. From your description, it does not sound like this is anything to do with the optional dual diaphragm fuel pump which incorporates a vacuum booster.

My speculation would be that it was the connection to provide vacuum to an accessory windshield washer system. These vacuum-powered, glass jar w/s washer systems were often seen on Buicks & Cadillacs of this era. I've never seen one on a Chevy, but no doubt they were available. Any other signs of such a system (bracketry for the jar, washer nozzles, etc.)?

 
mahalet 
Senior Member
Posts: 1023
mahalet
Age: 63
Loc: rio , brasil
Reg: 10-12-01
Re: wiper vacuum lines
02-12-02 07:51 PM - Post#33999    
    In response to

My Captain
When I wrote about every chevy has... what I really meant were the spray nozzle places in the wiper mount, sometimes obstructed by a screw, when not used. The bottles I saw were in the firewall, where you have the ambitioned expansion vase.
Anyway for using all those devices working on vacuum it would be very advisable to install a double action gas pump, with the vacuum suplementary section, and even a vacuum reservoir, so everything will work properly and energetically.
Mahar
Mahar
1951 Fleetline 2D, 261,3 spd, 3.55:1
1984 Chevrolet Caravan, made in Brasil
Iron Duke alcohol,5 sod, 122 hp


 
Anonymous 

Re: wiper vacuum lines
02-13-02 06:15 AM - Post#34000    
    In response to mahalet

Hi boots235,

If you decide to reinstall the vacuum windshield washer pump and jug, be sure to check the button in the center of the wiper control knob has the plunger installed. This is easy to check. Using a small flathead screwdriver, (jewelers screwdriver) loosen the set screw on the knob. Remove the knob from the wiper control and see if there is a very small shaft in the center. This shaft is about 1+ inch long and 1/8th inch in diameter.

If you don't have one, you can either order one from Fricken Wiper Service: http://www.wiperman.com or fabricate one out of materials around your work shop. If you make it yourself, be sure to estimate the length by sticking the rod in the small hole through the center of the control switch and placing the knob on to check fit. Then cut rod to length. This may take several tries to get the proper size. Also, a small spring will be needed the bring the plunger back to the resting, off position. See the diagram below.

Keith



 
Anonymous 

Re: wiper vacuum lines
02-13-02 06:30 AM - Post#34001    
    In response to

Just came across this on eBay! There is a photo of a wiper control knob with the rod/plunger which is for a '56 Chevy but very similar to earlier models. Only difference is the knob itself.

http://cgi.ebay.com/ebaymotors/aw-cgi/eBayISAPI.dll?ViewItem&item=602119225&r=0&t=0&showTutorial=0&ed=1013650011&indexURL=0&rd=1

 
Anonymous 

Re: wiper vacuum lines
02-14-02 11:39 AM - Post#34002    
    In response to

53/54 Chevies have the vacuum washer bracket and jar usually installed on the inner fender (driver side). If the washer and bracket are on the firewall, it was possibly an aftermarket installation or it is the pedal operated washer found mostly in trucks.
Both types of washers a shown in the Chevy accessories installation manual.
There is also a washer coordinator unit that attaches to the vacuum wiper motor.

 
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