450B engine

[mot]

A couple of questions about the 4219 out of my 450B, before I got it, the engine was rebuilt then left outside. So I had to take it all apart and inspect and rebuild. First the dumb thing, I am not absolutly sure which balancing shaft is left and which is right. Same casting number, but if you look at the gear end with key up one timing mark is to the left and one is right of the key. The other problem is the liner seals, the parts book shows 2 o-rings in the block and 1 "packing" (square cross-section o-ring) on the liner shoulder. When I took mine apart I also have a maybe 1/32 inch thick "washer" and some shims under the flange. The bare liners that I measured stick above the block properly per the manual, which also does not mention the washers or shimming. Thanks to everyone for all the help past and future and have a good new year. Tom

[LeonardL]

Tom,
It has been a long time sense I was in a 4219 engine. I don't recall ever having seen or known of any shims or washers for the liners. Perhaps some of these other guys have seen this. It may be that someone has done some machine work on the block and needed to shim the liners back to the original height. I would do some measuring of your flange on the liner and the depth of the grove in the block. Compare measurements between the different cylinders.

The liner seals should be the one packing on the liner and the two O-rings for the block. Red in the top groove and black in the bottom groove. The square or flat packing goes on the liner. Make sure the grooves are clean before you install them. Then use lots of soap to lubricate them so the liner slips in with out tearing a seal. I use Dawn dish liquid. I don't think you can get the old liner soap any more.

The balance shafts are left and right and I don't remember which is which but I do remember a serial number break for parts changes that were made in production. I would contact a Deere dealer and give them the numbers off of each shaft to determine which one goes where. You will also need the serial number of your machine and the engine serial number.

Again... Maybe some of these other guys can answer this better. But I hope this helps at least a little.

[LeonardL]

Okay... before I get reprimanded... I told you wrong on the balance shafts! It's the gears that are different. I went to the Deere parts page and the shafts are marked with the same number. It will be the gears that are right and left. Sorry about that!!!!

[jdemaris]

The other problem is the liner seals, the parts book shows 2 o-rings in the block and 1 "packing" (square cross-section o-ring) on the liner shoulder. When I took mine apart I also have a maybe 1/32 inch thick "washer" and some shims under the flange.

I've never seen those shims in an American Deere engine; just in a few Manheim engines. My first thought be be that someone counterbored the sleeve-flange recess in the block and had to compensate with shims. But if the bare sleeves have proper standout without -all seems odd to me.

Make sure you've got all cleaned well enough that each bare sleeve will fall into place with no effort. THEN put the three seals in. The orange ones are made of special material that swell up once they come in contact with oil or anti-freeze. Thus the reason only to use soap when installing.

[mot]

So I got to work on my engine a little more, stopped at Deere and they said the shims do not belong (although I had to put 1 under the sleeve that I had to replace to bring it up even with the other 3). As for the balancing shafts wehad to go by the service manual pictures (very hard to see the keyway and timing mark)) and it appears that the last guy put them in backwards. Thanks all.