Thread: Roger's LARS Mis-Adventure 2014

Tweet

I'll admit to never seeing one that bad! What I find equally amazing is the pin on the distributor gear never sheared.. or did it?

Originally Posted by 40FordDeluxe

Roger, when you pulled the pump apart, did you see any debris or small pieces of metal in between the gears in the pump? I've seen small pieces of metal get in the pump in between the teeth causing them to lock up. I've even seen them get on the top or bottom of the gears, create gauling, and seize the pump. The pump definitely killed the shaft.

Ryan,
I'm embarrassed to tell the story of the pump, but I will anyway. I couldn't turn the pump with the shaft, even with a pair of pliers so I pulled the cover. The pump elements seemed to be "stuck", but when I turned it over to look at the top side they fell out into a bucket that had some drained oil in it so I cannot say for sure that there was nothing in the pump body. With the pump elements back in the body the pump turns freely, but when I put the cover back in place it gets snug, with the bolts hand tight the pump can be rotated only with pliers on the shaft, and if the bolts are torqued the pump is locked.

I took the pump back apart and noticed a small "dent" on the bottom of the body, seen middle right in this picture:

DSC00789.JPG

Looking at the rotating element there's a corresponding "dent", seen at the bottom of the picture:

DSC00795.JPG

It looks like maybe something got in between the two pieces and jammed them. What I cannot figure is how something got past the screen in the pickup?

Originally Posted by 34_40

I'll admit to never seeing one that bad! What I find equally amazing is the pin on the distributor gear never sheared.. or did it?

No, the roll pin on the distributor gear is straight and true, and I admit I'm baffled by that, too.

What really has me baffled is where the stuff I found in the pan came from. The biggest baffler is the small machined "spacer" that's 0.039" OD, 0.029" ID and 0.008" thick. My first thought was that it came from the earlier rocker arm failure, where one roller tip came out and a second rocker fractured into two pieces, but there's nothing like this "spacer" on the old rockers. I don't recall such a piece in the build history. There's also what might be a roller out of a bearing, and two small pieces of wire which measure 0.0032" or very close to it, which is a common safety wire size. Here's the junk, and it's all strongly magnetic -

DSC00787.JPG

The bigger "stuff" couldn't possibly pass the screen, and I don't believe that the small diameter wire could either. I can't see something getting into the engine and managing to work into the pump discharge side, and into the elements "backwards". It's a real head scratcher for me 1) where the junk came from, and 2) how something got into the pump.