Injector pump

TinCan

Member
I have a '63 4000 diesel.
I pulled the injector pump off, to clean the outside, and the block behind it, for painting. I noticed that there is a shim under the pump. It's about .030 thick, and it looks home made. Is there suppose to be a shim under it? I can't find one in the Ford parts book, and there is no mention about one, in the service manual either.

Thanks, Pat
 

What do you mean "wear on the front pump flange".
And what to do to fix it right.

Thanks, Pat
 
On any injection pump that's not bolted tight, the front of the housing face will "wear". Saw an inline Bosch on a Case 1070 that was wiggling around while it idled at an auction. In really bad cases the pump housing needs to be replaced.
 

The pump was not loose. The flange, and block looks good, not like it was ever run with it loose.

I did notice that when I brought it up to 23 degrees btc, that it did not have the pump lines lined up. But if I rotated the crank backwards (counter clock wise) it did. I believe the difference was because of the spacer, allowing the gear to lift that much. Which should make no difference, as the engine doesn't rotate backwards.

When I put it back together, I am not going to install the shim.

When the gear is installed into the block, should it be flush with the block? I believe the shaft in the pump is recessed a little into the pump.

I will replace the O-ring on the pump when I reinstall it. The oil pump drive shaft looks real good.

Thanks, Pat
 
The shim could have been an attempt to change timing a few degrees. It doesnt belong there. Worn crank and cam gears will throw timing off some. The more wear you have, the more counterclockwise you have to twist the pump for correct timing.
 
The shim could have been an attempt to change timing a few degrees. It doesnt belong there. Worn crank and cam gears will throw timing off some. The more wear you have, the more counterclockwise you have to twist the pump for correct timing.
 

I will have to check to see if the timing lines, line up, when I reinstall it without the shim in. When I put it on 23dgrs with the shim in, before pulling the pump, the pump timing line was off to the right of the housing line, by about 3/32-1/8"

I am working against the clock. I am having shoulder surgery Monday morning, and have to get a few dozen things done, but only going to get a couple done. All my new gaskets just arrived yesterday. So that I can start to put it back together. I got the head back on Thursday (had a new gasket), so the heaviest is done, and I can whittle at it after surgery.

I pulled the drive gear, and looked at it, when I pulled the pump, because I was wondering about why the shim. It didn't look wore, shinny yes, but not anything bad to call for a shim. I will try to pull it out again today, and get a picture of it, and post it on here, but to me it's good. But I could be wrong. I was wrong once before back in '72, I never should have married that b***h. Mama was right! Should always listen to Mama. J/K

Thanks, Pat
 
If the shim was between the block and pump flange, it will NOT change the timing any as the pump drive shaft has a straight tang drive. If a shim is under the drive gear that will rotate the gear slightly. Depends where the shim is..
 

The shim is between the block and the pump. Would the cam turning the pump drive gear want to push the gear up, or does it pull on it down. If it pushes up on it, would it then change the timing? Either way, I am going to eliminate it.

I did not get time to look at it today. The last thing I did out in the shop, was to catch a pump tubing in my wire wheel, and explode both of my 8' fluorescent light tubes above the bench. I picked up the injector tube, and turned off the lights. I will clean it up tomorrow, and look at the gear then! Arrr!

Pat
 

I took pictures of the gear, and block today. There is a shim under the gear. I believe that is a stock bushing. See picture. The drive does sit a few thou above the block surface, is that normal. You can see in the picture that the block is not marred from the pump being loose.

In the picture the gear looks in great shape. It has a shine to it, but I can not feel any wear on it.

The proof meter say's there is 6175 hours on the tractor. I do not know if that is a lot, or not for a tractor of this age.

Thanks, Pat

mvphoto6067.jpg


mvphoto6068.jpg


mvphoto6069.jpg


mvphoto6070.jpg
 

Am I right to believe that the shim under the pump drive gear is stock? I can not find anything on it anywhere.

Thanks, Pat
 

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