I need a little help 1942 motor grader fuel leak

Sounds like you're probably looking at a drip line. Most likely the one from the fuel transfer pump seal. It drips on the ground instead of going into the oil pan. There are 2 seals on the shaft, one next to the fuel pump gears and the other next to the drive gear which is inside the engine. The drip line is a "tattle tale" so you know the seals are leaking and connects to the space between the two seals.

There are also lines in the same area coming down from the fuel filter top air bleed and the injection pump housing. Have had trouble with the bleed screw not shutting off before, might have to polish the valve or find another one to stop it.

Follow the line back to it's source and tell us where it originates. Pictures would help. As would a model on the grader to get the right parts.

Check the routing of the injection valve overflow line. Prior to 1943 the drip line was left open as a tell tale indicator. As of 1943 the overflow line was routed to the transfer pump suction. Do not plug this line.

the model is a 9k4307 I followed the injection valve overflow line and this line T's off of it. Wile I was looking around I noticed another line that is coming out of the left side of the transfer pump should these two be connected? I would show pictures but cant figure out how to upload them?

Send them to me and I'll upload them. Send me a pm and I'll send you my email address.

These two configurations should cover it, with the later being the one where the overflow line ties into the transfer pump suction.

One thing to note, the only drip line that may be connected into the fuel supply line is the one from the injectors. It may not have any of the other lines T-ed into it or you will not be able to bleed the filters or you'll get fuel in the oil pan or in the injection pump oil sump.

here are some photos the one with me pointing to the line corresponds to the other photo of the line that 90's out of the transfer pump and sweeps to the right the line just behind that one with the rubber piece on it comes from the t on the other photo (the injection valve overflow) I hope this makes sense. as you can see she needs a bath!! were these two connected at one time?

Hi Team,
there are several versions of these lines in effect over the years.
One below is from 9K2854-9K4824.

Have also added the drip line modification, OM mentioned.
This scan shows how Cat routed the drain line thru the main body of the transfer pump.
You need to disconnect the drain line at the tee at the top of the filter tower and re-route it with suitable plumbing to to a hole you need to drill and tap to connect the drain line to the fuel transfer pump suction/inlet housing--where the fuel lines comes from the tank.
You will now need to block one leg of the tee fitting where the injector drain was connected to stop fuel issuing when bleeding the filter tower.
Hope this helps.
Cheers,
Eddie B.