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case 930 comfort king rpm issue

D

drakeffa1086

New User
hello Drake here again working on a 930 case ck. I finally got the timing squared away last week. however the tach cable was broken so I had to order one from the local case IH dealer and it finally came in.

low idle is running around the 650 700 range but my high idle is only running around 1600 1650. I have adjusted the governor linkage to be able to speed up the tractor a little but I need more closer to 2000 or 2100 rpm out of it and i didnt know where else to adjusted it at

I really dont want to get into the governor internal if i dont have to.

the pictures below are where I have made some adjustments. ive tried making the hand throttle stop bolt and the lever only goes so far and then you have to use the foot throttle to get the extra RPM.

the other pictures are where i made the governor linkage longer to be able to gain more RPM
I couldn't find any where else to adjust. just curious if anyone knew how to get closer to 2000 or 2100 rpm

thank you in advance



cvphoto27560.jpg


cvphoto27561.jpg


cvphoto27562.jpg
 
Why do you believe you need to get 2000 rpm out of this tractor? They were built as a low compression, long stroke, indirect injection diesel. Part of the reason they last so long is because they don?t rev high. It will give you 540 pto at full throttle at less than 2000 rpm
 
1600 ought to be plenty. A tractor engine doesn't need to scream to develop it's horsepower.My M farmall is 1450,the 560 is 1800. The old Model D johnDeere developed it's full power at 800 rpm.All it really needs to do is to get full 540 rpm under full load.
 
the guy who owns the tractor wants to plow with it after wheat harvest. and he wants as much horse power he can get. which I agree with you guys on 16 1700 is enough for a 6 cylinder gas.

I do have a dyno at work Im going to dyno it and see what I get out of it. at 540 with a hand held tach at full throttle i get 540 but who knows if that hand held tach is correct

I know in the ops manual it say high idle is 1960 rpm I was wanting to get that but ive made as many adjustments to that cable on the right had side.

thank you guys for the replies
 
Just turning up the rpm wont get any more power. All you will do is use more gas. The governor is set for optimum Hp at rated speed. It will simply pull down to rated speed.If he needs more ponies,he needs a bigger tractor.I turned my old 560 to 2000 once. Same gear on the plow .made absolutely no difference in power. The engine would simply go to rated governed full load speed. Just used more fuel.turned it back to 1800 and left it there.
 
I did not see your original post and more info about this tractor would be helpful, gas or diesel? Comfort king early version 6 speed or later 8 speed? Full load early ones, 1600 and 1800 later ones. Is your tach marked PTO 1700 or something lower. If you are not sure, a picture of entire tractor should help show which version.
 
A 930 gas should run either 1950 or 2050 rpm's, I don't remember which. At the 1600 rpm's hesaid he had he would be short on hp by quite a bit. I don't know much about those gas engines other than general stuff. But I do have books at home and can look up what he needs tomorrow when I get home from work.
 
You adjust throttle linkage to pull governor arm up against the stop. If it contacts the stop and RPM is still low, you have a weak spring, unless someone purposely adjusted stop for lower rpm.
And, Horse power is work, times rate of speed work is done , so increased rpms will indeed give you more horse power. Not more PULL POWER, just doing the job faster. According to the picture of the tachometer, 1700 rpm is pto speed. Rated speed would be 8 or 10 percent higher than that at a minimum.

A lot of tractors have a high idle speed of 2600 rpm and rated load speed of 2400 rpm but pto speed is 2100 rpm. So, it is necessary to know the machine. I know that Case is not that high rpm's but just an example.
 
I never ran my 930 ck diesel at much above the rated pto speed (1700 rpm) and had adequate power for my needs. I don't think extra rpm is going to make a difference to what you pull. Traction will be a limiting factor as well unless you are way up in ground speed.
My manual shows rated rpm as 1800 rpm for the 930 gas engine, same as the diesel. This is a 1968 model tractor.
 
Thanks for the pictures, same appearing throttle linkage (only longer) as on my 730 Gas. I had minor low RPM issues and at the front of the engine rt. side needed to adjust the stop on the rod forward. A stretched screen could be an issue. On the 730 front left side of engine was an adjustable linkage from the governor to carburetor that required adjusting length. Yours maybe the same. The 730 has good power 16-1800 RPM with PTO 1700. Carburetors can be a problem and also distributor's with broken advance springs and/or advance weights frozen in a fixed position, been through all theses issues.

Good looking 930, gas are a little rare.
 
we put in a electronic ignition and who ever did the timing had it all out of wack and i finally got the timing just right and it no longer lags. carburetor has been cleaned and rebuilt recently as well

so would you recommend replacing that governor spring on the right hand side??
 
It is hard to say about the spring and if even available. First I would look more at the linkage from governor to carb and see if at full throttle no load how far it opens carb plate and also on dyno full load if it opens all the way. If not open full load adjust linkage to get it open. Getting it on a dyno could be helpful, sort off trial and error with carb jet settings and timing.
 
I reread your original post in this line of discussion and noticed you get more RPM with the foot throttle than hand throttle, something is out of adjustment between the two before one or both pull on rod along rt. side of engine, the 730 was all screwed up in this area in steering column and the interlinking to the rod. Got both to work about the same by trial and error adjusting, a 930 comfort king is probably some different. Check all stops that limit a components travel and allow more or maximum travel.
 
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