Engine Up Grade for 2610D

[California]

...how to determine if my engine is lacking power, compression, etc that would tell me it's time for a over haul or replacement engine.

Cranking over easily but difficult starting is the most obvious sign that compression is below spec, because a diesel needs compression to fire off. Extreme oil consumption, knocking, or a drop in power output over time would be other symptoms. Smoking on acceleration is harmless, continual smoke would point to a need to clean/replace injectors but it doesn't mean the whole engine is shot.

If you don't have these indicators there's nothing wrong with it. These things will run for years and I think difficult starting will likely to be the first sign the engine needs attention.

Isn't that the model that shares its engine with Deere 850? So there are salvage tractors out there if you ever need major parts.

Summary: don't worry about it.

 

[Dave2610D]

Cranking over easily but difficult starting is the most obvious sign that compression is below spec, because a diesel needs compression to fire off. Extreme oil consumption, knocking, or a drop in power output over time would be other symptoms. Smoking on acceleration is harmless, continual smoke would point to a need to clean/replace injectors but it doesn't mean the whole engine is shot.

If you don't have these indicators there's nothing wrong with it. These things will run for years and I think difficult starting will likely to be the first sign the engine needs attention.

Isn't that the model that shares its engine with Deere 850? So there are salvage tractors out there if you ever need major parts.

Summary: don't worry about it.

Yes, its like the JD950 I think. The only thing I seem to match to your points of interest about a replacement possibilities would be the starting issue. If I have the throttle lever in the "idle" it will take a bit of cranking to get it to kick off if it does. But if I give it maybe 1/2 or almost full throttle, she'll crank up after maybe 3 seconds.....at that point I immediately throttle down to idle ( not having the engine rev up obviously). There is a knock but I am assuming it is from the fuel pump? No oil consumption. No smoking and very little (black ) on acceleration.
Would a compression gauge be useful for me to check compression on each cylinder? I think my father may still have one if so. What pressure range would be optimal?

Thank you guys for all of the help here....one fantastic forum !!!!

 

[California]

Its not expected to fire off with a cold start at idle. Yanmar's operation manual says crank at full throttle, pull back before it gains rpm. I think most of us use half throttle instead.

Your description sounds like its in good condition. Injector pump sharp knock - even with compression released - is normal.

Its not practical to check compression unless real problems indicate something is wrong. 1) compression is too high for an automotive tester. 2) You would have to pull the injectors which is difficult. I found it near impossible to replace the injectors on my similar YM240, they were cemented hard in the bores going down to the actual sealing point and I broke a couple of attempts at an amateur puller before I got them out. Hoye sells a puller but it requires dis-assembling each injector. After using that I would get them rebuilt if they had been apart and contaminated. Summary if it isn't broken don't 'fix' it.

Just run it and enjoy it, don't imagine problems.

 

[winston1]

Its not expected to fire off with a cold start at idle. Yanmar's operation manual says crank at full throttle, pull back before it gains rpm. I think most of us use half throttle instead.

Your description sounds like its in good condition. Injector pump sharp knock - even with compression released - is normal.

Its not practical to check compression unless real problems indicate something is wrong. 1) compression is too high for an automotive tester. 2) You would have to pull the injectors which is difficult. I found it near impossible to replace the injectors on my similar YM240, they were cemented hard in the bores going down to the actual sealing point and I broke a couple of attempts at an amateur puller before I got them out. Hoye sells a puller but it requires dis-assembling each injector. After using that I would get them rebuilt if they had been apart and contaminated. Summary if it isn't broken don't 'fix' it.

Just run it and enjoy it, don't imagine problems.

Ditto.

 

[Dave2610D]

Ditto.

Again, great advice from great people like all of you. I'll do that. Thank you

 

[clemsonfor]

I very much appreciate all the post on my question and thoroughly understand all points made. My thought was, if I had thoughts of replacing my engine for any reason that I would have more than just one search going for it. Being the possible 3 rd-4th owner (?) I have no knowledge on how to determine if my engine is lacking power, compression, etc that would tell me it's time for a over haul or replacement engine.

you could do a compression test, but on these diesel engines that is a pain in the butt. Do you have any blowby from the bloy by tube? That is a good indicator of engine health. A healthy engine will have little or basically nothing there and the more worn the rings and cylinders are the more you will see from that tube.

 

[clemsonfor]

Yes, its like the JD950 I think. The only thing I seem to match to your points of interest about a replacement possibilities would be the starting issue. If I have the throttle lever in the "idle" it will take a bit of cranking to get it to kick off if it does. But if I give it maybe 1/2 or almost full throttle, she'll crank up after maybe 3 seconds.....at that point I immediately throttle down to idle ( not having the engine rev up obviously). There is a knock but I am assuming it is from the fuel pump? No oil consumption. No smoking and very little (black ) on acceleration.
Would a compression gauge be useful for me to check compression on each cylinder? I think my father may still have one if so. What pressure range would be optimal?

Thank you guys for all of the help here....one fantastic forum !!!!

Starting procedure on these things I think say to crank it at wide open throttle. I crank and half or 3/4 throttle and then immediately run it down to like 1300rpm

Edit: after reading all posts I see that what I said in this and prior was basically covered. I responded without reading all new posts.

 

[Dave2610D]

Clemsonfor and those that contributed to this post....my apologies for having not responding to your post as well not having been logged in on the forums in quiet some time. In response to your two last post, I've got very minimal black oil blow by from the vent tube hanging from the engine after normal run time. I've just moved 24 yards of loose dirt two weeks ago and there was more than normal that leaked from the tube but nothing to alarm me to anything serious...if that makes sense? ...glad I had plastic on my concrete LOL:thumbsup:
Your cranking procedure is right on.....thank you for that. I've been cranking that way from day one and glad you repeated it......helps us.