Temp gauge not working Chevy C15

[Bob Carriere]

HI Terry

Will need to take pcitures of my best cab 12 for the vacuum line.... I know where it is from memory but a picture is worth a 1000 words.

Temp gauges I have seen of those civilian dashes ARE all with the copper line none were ever electric....but then I have lead a seclude life.

Lenght is approx. 84 inches on mine which was copied from an old original.....

The trick is where it connects to the T case.

The speedo cable is driven by the center gear..... center cap of the T case.
Ther are two models..... the better ones the connection on the cap where the cable screws in is at 9 oclock when sitting underneath and looking back. So the cable comes down within the frame over youleft shoulder end goes into the t case center cap with a minimum of bending.

ON the worst model the connection is at noon and requires a sharp 90 degree bend to connect into the T case......... cable do not like to be bent that way..... some models had a piece of sheet metal that was clipped to the cable housing that held the sharp bend stable........ The Original cable for the GMC trucks that Frank sells do have that metal reinforcement for the sharp bend at the speedo head.

For simplicity I found and transplanted the 9 oclock cover from another T case for my truck.

Pics tomorrow

Cheers

[Bob Carriere]

Missed that........

You mean you have no brackets on each side to open the windshield.......

The all you need to do is look for a hole in the centre of the dash just below the windshield frame...... or make one....... look at mine...the copper line fits right in there with the rubber tube inside the engine compartment.

Must have been made on a late Friday afternoon with whatever parts where available..... maybe you got a cab 11.5

Cheers

[TCLARK]

Hi Bob
Nope the window won't open and no roof hatch, probably built
on April fools day!
There has never been a hole in dash center for the vac line,
but I can soon make one. Tomorrow I'm going to have a good look to
see where that line originally went. Maybe it had no optional wipers too ha ha.
I did rebuild the wiper motors and they purr along nicely. I used fluid film
instead of petroleum based lube, so the seals shouldn't deterierate too badly.

Sure hope I can get an original speedo cable!
Cheers
Terry

[Phil Waterman]

Hi Guys

Take a look over by the right hand winshield post, that is where the line was
on my Pat 12 C60L. Take a look at the pictures on http://canadianmilitarypattern.com/C...Windscreen.htm I'll try and find some better pictures on main computer and post them later.

Cheers Phil

[TCLARK]

Hi Phil
Your right I can see line making a bend on the post. I am going out
to see if I have a drilled out hole on that side! Since
my windshield is non opening, I may take Bobs advise and drill
near the center. I'm puzzled because I have the original T with
tubing(I think original) that I have mounted but no hole.
Was this truck bought at Walmart? Ha ha
Cheers
Terry

[Phil Waterman]

Hi Terry

The center would make more sense it would be nearest the vacuum port on the manifold. If there is a hole near the windshield post but has the T in the middle then I might suspect that the windshield frame had been swapped at some point. It is not a very strong design.

Cheers Phil

[Grant Bowker]

Bob and I looked at one of his Cab12s today. Phil's statement about tube attached to right pillar matches that truck. The T fitting was located just inboard of the right wiper motor. Check to see if there is evidence of a centre hole being welded over as Bob's 12 had both holes with tube at right and centre welded (brazed?) over. Photos to follow.