1026

[dwag]

Doing a re-ring job on a DT407, what eng oil should I use? Thanks, john

 

[used red MN]

Oh no a halfway job on a DT 407, the Tractor Vet is not here so I will let you know YOU ARE DOOMED!! In my opinion run your favorite flavor. Get here going warm her up re-torque the head and recheck the valves. Give her a half load job for the first hour or so. Then pull it so her eye teeth are sweating for for an hour. Then another hour or two at normal load. Then for the rest of the first 50 hours minimum idling or other dinking around. There is my two cents. I am sure someone will chime in here saying you better have some type of IH dyno-saurous juice in there. I sure hope you let us know if the Vets predictions are right.

 

[pete 23]

The most critical part of just reringing a diesel with keystone (tapered) rings is the wear in the ring groove of piston. If that piston has a ridge you can detect where the ring rides on in that ring groove, you are highly unlikely to get good results with only rings.

The rest of the condition of the bore and piston is pretty obvious as to it's serviceability but ring grooves are often over looked.

As for oil, good diesel oil, 30 wt or 15- 40 is fine.

 

[fastfarmall]

Hey Pete, My brother bought a new 1066,about in 1975, it used oil since day 1, a gallon a day,light or heavy load no difference, so the next winter he goes in to the IHC dealer and says give me my oil, they had a dumb look on their face,he say i went threw 110 gallons of oil last year, so this years's it's on you, then they knew what he was talking about, so the salesman had a quite a bit of pull,but IH owner was there too,so they said bring in,well he talked to the mechanic Later, he said we just put rings,in it, went from a Gallon a Day to a half gallon a day, big deal,the dealers are so cheap, it unbelievable,but if the customers was paying for it,then it would of been new liner's and the whole job lot!

 

[caterpillar guy]

What makes you think it is rings. A plugged air filter and working it hard like plowing will make it suck oil like no tomorrow. Idling will also push oil out the stack while diluting the fuel with excessive fuel in the oil. I would first do a compression check on it and should be even at I would guess around 350-450 pressure on it. If lower then maybe cylinders are a problem. While the injector is out you might put some air on the cylinders with them at TDC to see if you hear any sound and if so find that. I'll guess your guides are more the problem than the cylinders unless it has a boat load of hours on it like in excess of 15,000. Those engines were just not big oil users. What leaks do you have on the outside of the engine those will add up also. Then My dad's cousin used to say a D-9 Cat would use 5 gallon of oil the first day out on a new tractor and cut back each day till it didn't use much as the rings had to seat. He also said if you are using some oil it will not set up in use. the ones that didn't use some oil were the ones that bothered him and he works on those engines for a full career time on it all.

 

[BarnyardEngineering]

(quoted from post at 14:39:51 07/11/22) Doing a re-ring job on a DT407, what eng oil should I use? Thanks, john

Use the same brand and type of oil you've always used.

Unless you're just asking this to stir the pot.

 

[dwag]

Long story but tractor sat in mach shed for 2+ yrs. Hydro was sent off for rebuild and installed by mechanic/friend/independent who died from stroke before job completed. Head had been rebuilt, but tractor came in less manifolds, tank, radiator etc. While putting together in my shop, I discovered eng was stuck, removed pistons and all comp rings were stuck. Gave cust 2 options, out of frame OH or re-ring as I won't do in-frames. Was considering using Deere break in oil. john