Temp gauge not working Chevy C15

[TCLARK]

Hi Bob
I was almost ready to buy a new dash board but since the
other gauges work, I will pursue this temp gauge rehab.
I found on the net that I need a AC Delco 1512015 sender
which is used on 6v. gm vehicles. There is one on ebay
for 135 US but I may find one around here even on an
old grain truck. I have a friend who is a electrical
engineer who may know how to adjust the present set up.

I am also working on the wipers, do you know how the vac line is
plumbed thru the dash, see my pic earlier in this thread.
Speedo cable is next, thanks for your speedo info!!

Thanks
Terry

[Frank v R]

Terry, I have NOS speedo cables , they are for the G-506 Chevy, you'll need to give me a length,

[Bob Carriere]

Hi Frank

Can you post a picture of the connector for the speedo and the overall lenght.

Thanks.....

[Bob Carriere]

Hi Terry

ON the cab 11 the solid copper line comes out centered on the dash.....on the cab 12....with the windshield that opens.... it comes out the driver's side on the rigid post than transition via a short rubber line to the solid line of the wiper motor mounted and pivitting with the windshield...... T connection to the other wiper motor.

I only have a cab 11 pic at the moment but can look for or take pictures of a cab 12 if needed.

Cheers
PS plumbing done by Grant..... with acorn nuts as they are less damaging than a bare nut/bolt staring at your forehead.

Notice the absence of door hooks/eyelets.... mine never had them retro fitted.

[TCLARK]

Hi Bob
So my Cab 12 has a non opening windshield, but no hole for the
copper line, so should I route it over to the drivers windshield post?
Were will it go thru on the drivers post?

Good idea to look at the speedo ends, do you know the length I need?

Mine could be a civilian dash and speedo, since the temp gauge is
not capillary type.
Cheers
Terry

[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