M1842 Posted May 31, 2019 Share Posted May 31, 2019 I was going to try reconnecting my vacuum pump to the manifold and wiper motor to see if I could get the wipers functioning again (they have not functioned as long as I have owned the car. I anticipated either a quick triumph or disappointment. But feeling around the vacuum pump I discovered that the metal pipes that provide inlet/outlet access to the pump are missing entirely. Are these something that can be fabricated like brake lines, do I need any special fittings to fit the pipes to the pump? Would it be better to buy another pump with pipes and transfer them to my pump? It looks like rebuilt pumps do not come with these pipes though NOS units have them. I expect to have to rebuild the pump anyway once I get it off the car. Mark Link to comment Share on other sites More sharing options...
old-tank Posted May 31, 2019 Share Posted May 31, 2019 For now just connect directly to manifold vacuum as a test of the wipers. Then remove the pump for repair. Used pumps should have the pipes or they can be fabricated. I might have some. 2 Link to comment Share on other sites More sharing options...
M1842 Posted June 1, 2019 Author Share Posted June 1, 2019 I hooked up the wiper motor to the manifold port and the wipers move halfway up the windshield and stop, this happens every time I turn the wipers on. This is at idle. I haven't tried at speed. Not enough vacuum? Defective wiper motor? Mechanical issue with the wiper mechanism? Link to comment Share on other sites More sharing options...
old-tank Posted June 1, 2019 Share Posted June 1, 2019 Weak motor that needs to be rebuilt. Link to comment Share on other sites More sharing options...
M1842 Posted June 1, 2019 Author Share Posted June 1, 2019 Thanks, Old-Tank! I'll add the motor rebuild to the punch list. I bought an used fuel pump off eBay last night so I will have the vacuum lines I need. Mark 1 Link to comment Share on other sites More sharing options...
Gene Brink Posted June 2, 2019 Share Posted June 2, 2019 My '55 wipers worked the same way when I first got the car (talking 40 years ago now) and I pulled the motor apart and cleaned out a lot of hardened grease and greased with fresh stuff and the wipers worked great the six years I had the car. Not a hard job - just be gentle with things (especially the nylon piece that connects to the cable going into the car - it will be fragile). If that does not correct have a professional rebuild the unit. 1 Link to comment Share on other sites More sharing options...
M1842 Posted June 8, 2019 Author Share Posted June 8, 2019 I got my spare pump with the vacuum pumps, should I be able to pull the pumps out by hand? They seem quite tight though I could turn one with a light strokes from a brass hammer. Should I put in some Kroil to make them turn easier? I got the vacuum side opem and it is full of white powdery corrosion while the fuel pump side looks like new. Mark Link to comment Share on other sites More sharing options...
old-tank Posted June 8, 2019 Share Posted June 8, 2019 The fuel vacuum pump rebuild is detailed in your service manual. Rebuild kits are available: http://www.then-now-auto.com/fuel-pumps/. They can also rebuild for you. See my website for another option: HERE (only if you have the domed top fuel pump vs the flat top with lots of screws). 1 Link to comment Share on other sites More sharing options...
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