Vacuum wipers,

Wayne64 · Post by **Wayne64** » Wed Mar 18, 2009 4:26 pm

A while ago I posted about a loss of vacuum up at the motors. I had a chance today and did some testing with compressed air. The blockage is in the tube that passes through the windshield hinge. I have the CD manuals and couldn't get either a clear photo or a description on taking the fittings apart. Could someone explain the parts involved and the disassembly of the tube and fittings. TIA

powerwagontim · Post by **powerwagontim** » Wed Mar 18, 2009 5:26 pm

Hi Wayne,
THe fitting on my 51 iwas a brass block with steel lines. The lines were shot, but I soldered in some 1/4" copper tubing I had. My parts truck had a steel block with steel lines. Also frozen into the pivot bolt. There is no mechanical connection, it just slides into the pivot bolt and I suppose the vacuum line inside helps keep it in place. There are a couple of little clips on the windshield hinge, but thats about it. I would pull it out and try soldering new tubes onto it.
Tim

Wayne64 · Post by **Wayne64** » Wed Mar 18, 2009 6:00 pm

Thanks Tim, Here I was over thinking how it worked. I figured the windshield bracket had some kind of gland nut or O-ring. The next sunny day I'll pull it out and check it out.

Post by **Cal_Gary** » Thu Mar 19, 2009 5:57 am

Replacement windshield bolts are becoming hard to find-try repairing yours if you can.
Gary

m-37Bruce · Post by **m-37Bruce** » Thu Mar 19, 2009 1:15 pm

Hey Tim, Wayne & Gary,
He had them a while back, If he's out I might have a spare somewhere?

Wayne64 · Post by **Wayne64** » Fri Mar 20, 2009 2:23 pm

Mystery solved. Today was the day I removed the vacuum lines that travel through the windshield hinge. Now under stand I'm just a bit more than disabled and the plate in my neck makes it tough to get under the dash. I try to pull off the vacuum hose from under the dash by feel only, the hose wouldn't even twist with a plier? I had already bought 25' of new 7/32 vacuum hose and again by feel sliced the hose length wise so I could remove it. When I finally got the metal tube assembly removed I saw two things. The tube that traveled through the hinge bolt was copper, OK but it was 3/16" OD instead of 1/4" OD. So the Duck Egg that did the restore put a load of rubber cement on the copper tube and pushed on the hose. I found a perfect plug of rubber cement inside the 3/16" copper tube not to mention the copper tube wasn't even reamed after being cut. I'll check my stock to see if I have some 1/4" OD S.S. tube for a redo. Thanks Gents

powerwagontim · Post by **powerwagontim** » Fri Mar 20, 2009 3:04 pm

Hi Wayne,
Congrats on getting it fixed! Some of the things we find working on these trucks really make you shake your head in disbelief.
Tim

knattrass · Post by **knattrass** » Sun Mar 22, 2009 3:56 am

Wayne - working under the dash requires a small teenager who can bend and take the knocks to the head.... I ended up drilling out the steel tube that was rusted into the w/s bolt hole and started over. We switched over to the 24v and passed 2 wires thru the hole and up into the w/s since my son was going to be driving it. I plan on getting my trico's rebuilt and buying the tubing/fitting kit from John at MWM. The 24v wipers are not up to par as Charles has previously posted - but they work in a pinch.

Vacuum wipers,

Vacuum wipers,

AB Linn

UPDATE!!!