[D&M Farms]

My steiger st310 with an 855 cummins is leaking oil from somewhere around the front cover. Does anybody have any experience to where specifically the oil maybe coming from. It's not leaking fast but I'm going to have to replace the belts and the fan has blowed oil all over the front of the engine. The crankshaft pulley, cam shaft cap, injection pump pulley, and the hydraulic pump are the only thing that are in contact with oil internally so it could be leaking from one of those points. Any ideas?

 

[D&M Farms]

After degreasing and pressure washing the front of the engine, I restarted it and let it get hot and noticed it leaking behind the pulley set that drives the injection pump. I then shut the engine off and it seemed to run out a little faster for a little bit.

 

[D&M Farms]

Accessory drive pulley seal, quite common on them. They are fairly easy to replace, sometimes the front cover may crack there also but haven't seen one in a long time.

Does the bearing usually need replaced while putting in a new seal? Might you have the part # for the seal, Caseih or Napa? Preferably the latter.

 

[D&M Farms]

Tractor model is a '77

 

[D&M Farms]

What style of puller works best to remove the accessory drive pulley? Looks as if the radiator fan, shroud and A/C compressor will have to be removed to get the pulley off.

 

[D&M Farms]

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[D&M Farms]

I removed the belts and radiator fan and when I put a 3/4" drive 1 15/16" socket and ratchet to loosen the pulley nut it rolled the engine over. I'm working by myself, so what's the best way to lock the engine, so I can loosen this nut?

I called Big Tractor Parts and they recommended getting the seal and sleeve from cummins, so that's the route I'm gonna take. I got to get this tractor going so I can use it on my "new to me" 9 bottom IH plow, for plowing in chicken litter after I harvest my soybeans.

 

[D&M Farms]

Thanks NorthernFarmer, I'll put her in high gear and try it. Now here's the question. Are the threads on the accessory drive pulley shaft, right hand threads? Believe it or not it crossed my mind but at 6:00 in the afternoon its hard to get a hold of a professional.

 

[D&M Farms]

It's been a few years since I did one and haven't been near the manuals for a month. The nut is regular thread, can't remember how I held the engine, might have given the wrench a hit with a hammer to knock the nut loose, didn't remove the radiator and I think I may have used a crank pulley puller to pull it off, I'm sure there are a couple threaded holes in it for the puller.

I'll see if I can get a break and look it up, it's not a big job and there are no timing issues and such you need to worry about. The engines I did it on were 444XTs in cabover Internationals and I think an N14 in a Western Star.

I'd appreciate it.