How To: C15a Wire-3 restoration

[Jordan Baker]

A whole lot of parts for a simple antenna mount. Nearly finished the building of this unit.

[Jordan Baker]

I also just got a nice delivery this evening. Newly made side light socket bodies.

[Jordan Baker]

Antenna mounts all painted and the last 5 large bins are all finished with construction and ready to go to the sandblasters this evening.

[Phil Waterman]

Hi Jordan


Took a while to find it but here is the Service Bulletin I was remembering.


Gas Line.jpeg


Interesting the addition of flex lines not found on earlier CMPs. Just shows why we find all sorts of configurations on things on CMPs as time goes bye that are not necessarily shown in the manuals. It is interesting that these little change do show up in the parts books.



Bart Vanderveen was able to narrow down the date of construction of certain CMPs by what combination of special or different parts using the different dates on of publication for the parts book.


Looking through the parts book it will have little notes like "after serial number ?????? use part number ?????." But then again you can find a particularly early CMP that has every single update done to it.


Cheers Phil


PS- What did you use to seal the gasket around the fuel gauge sender unit? The ethanol containing gas has plagued my trucks with weeper leaks that come and go.

[Jordan Baker]

Hi Phil.

Funny enough Brian Gough and I were just talking about that same thing of narrowing down build dates just the other day.

As for sealing on the fuel tanks I think I made gaskets from 1/8” neoprene.

[Jordan Baker]

Picked up the parts yesterday and spent most of the afternoon painting. Today I finished the painting and got all the bins installed. I managed to time my painting of POR and the SCC2 paint so that I could spray the SCC2 directly on the almost cured POR. I find the topcoat of paint really bonds to the POR and you get a very strong paint.

All of the bins painted and installed really changes the look of the truck. I like it

[Jordan Baker]

I also worked on my side and tail lights. All new wiring as I won’t use original 75 year old wiring on the truck. The socket bases were new made and they worked perfectly for installing the braided shielding. Lastly I found one of the original blackout disks that was fitted to the side marker lights. As if these lights didn’t give off much light to begin with.

[Chris Suslowicz]

Originally Posted by Jordan Baker

A whole lot of parts for a simple antenna mount. Nearly finished the building of this unit.

I don't think that is in any way a 'simple' antenna mount.

It looks to be a modification of the original "Aerial Base No.1" mounting (used with the Wireless Set No.11) where there was a tension spring to hold the insulator itself in the "cup" of the mounting. This was then modified later by adding the square adapter and flat plate on top to take Aerial Base No.8 (and later No.10) when the Wireless Set No.19 replaced the earlier set. The 7-hole (for the six mounting bolts and central feed cable) mounting that was introduced with Aerial Base No.8 has remained the standard to the present day, nearly 80 years after introduction.)

Chris.

[Jordan Baker]

I agree Chris. It’s very complicated. It was originally done for the 11set. In one of the original photos there is what appears to be an 11set mounted in the truck. Or at least the charging board for the 11set. The Mk1* Carrier and Otter were also made to be able to fit the 11set or 19set.

[Jordan Baker]

Installed the tail, brake and convoy lights the other day. The pictures don’t do justice for just how bright these LED’s are. Even from a 45deg view they stand out. I’ll be going with two brake and two tail lights. I realize the original only had one brake but to be safer I’ll go with two.

[Phil Waterman]

Originally Posted by Jordan Baker

....... I realize the original only had one brake but to be safer I’ll go with two.

Hi Jordan

I wholeheartedly agree that good visible brake lights are a necessary safety measure.

While the wiring diagram, in the manual, shows only one "STOP LAMP" two of my trucks 1945 HUP and 1942 Pattern 13 C60S appear to have been wired originally with two brake or stop lamps one each side.

So that rear of the HUP had two of the two light tail light brackets the drives side one has a toggle switch which turns off both tail lights (rear marker) turns on the black out or SUB LAMP which shines on the rear differential. The C60S has the sub lamp on the side of the frame in the form of push switch like the high low headlight switch
The brake light isolation switch is up on the dash.

When doing my first CMP wiring harness it was for my HUP which fortunately was very complete to copy, using the wiring diagram for the size and wire markings.

Cheers Phil

[Harry Moon]

I also use the LED bulbs but went a little further with magnetic tow truck tail lights, with turn signals. I can fold them up out of sight when on display. And they add lots of visual cues to anybody following.

[Jordan Baker]

All good ideas. The harness came with separate signal wires installed. So if I add extra lights the wires are already in place.

Today was a full day spent in the shop. I made up the tray and cover for the Chorehorse generator. It was mounted on the left cab step. The Chorehorse is also mounted on a sliding plate so it can be dismounted. However it is my belief that it was intended to be run while on the cab step.