Dr. Allis...I have a question

Sir, help me out a little on this spring from the vertical arm to the drain plug.  I'm having a tough time keeping my rpm's low enough to stay under 1890 fast idle while allowing my carb to open up under load.  The only method I see working "better" is making the adjustment on the carb side (even though I KNOW this isn't the right way).  Yesterday, my rpm's were spot on high idle, opening up on the carb side wide open under load, but my carb wouldn't really open up until I was at the end of the pull and lugging...too late!  Would an extra spring on the carb side help?  The one I saw yesterday was from the carb linkage to the drain plug.  Yours seems different?  Thanks very much for your help. Kevin

I'm going to try and make this simple and to the point. Engine off....throttle wide open....adjust (bend) the vertical governor arm such that the carb link rod just slides into the arm hole or be even 1/16" too short. DO NOT EVER DEVIATE FROM THIS SETTING!!! (1/16" short will not affect the HP output) This is making the governor as "quickly" acting as it can ever be while still allowing for full open at the carb. If you need more (or less) rpms change the spring/plunger inside the governor OR add an external spring like I said earlier to the governer vertical arm, remembering to make the extra spring as long as you can and keeping it down low (1 to 2 inches max from the bottom) on the arm. Some of the 201/226 engines have a high idle rpm stop screw/bolt on the top off the governor front cover to be able to adjust rpm's some, but not 200rpm  at a time. Governor springs as I know of ..WC-1600 rpm tops...WD/WD45-1700 rpm.......170/175-1800 rpm (only with WC/WD/WD45/D17 governor weights!!!)........D17-2000 rpm........D17 spring with 170/175 weights-2200 rpm. These rpms numbers are close and will vary a little bit with the carb you are using and even cubic inches and camshaft style, but they are accurate in the results you will get from slowest to fastest. There are possibly a couple of other springs for other applications listed in the parts books.

DrAllis wrote: I'm going to try and make this simple and to the point. Engine off....throttle wide open....adjust (bend) the vertical governor arm such that the carb link rod just slides into the arm hole or be even 1/16" too short. DO NOT EVER DEVIATE FROM THIS SETTING!!! (1/16" short will not affect the HP output) This is making the governor as "quickly" acting as it can ever be while still allowing for full open at the carb. If you need more (or less) rpms change the spring/plunger inside the governor OR add an external spring like I said earlier to the governer vertical arm, remembering to make the extra spring as long as you can and keeping it down low (1 to 2 inches max from the bottom) on the arm. Some of the 201/226 engines have a high idle rpm stop screw/bolt on the top off the governor front cover to be able to adjust rpm's some, but not 200rpm  at a time. Governor springs as I know of ..WC-1600 rpm tops...WD/WD45-1700 rpm.......170/175-1800 rpm (only with WC/WD/WD45/D17 governor weights!!!)........D17-2000 rpm........D17 spring with 170/175 weights-2200 rpm. These rpms numbers are close and will vary a little bit with the carb you are using and even cubic inches and camshaft style, but they are accurate in the results you will get from slowest to fastest. There are possibly a couple of other springs for other applications listed in the parts books.

  why are the springs different strengths if the difference is in the way the gov. weights are made. Also why when asking allis chalmers dealor for new gov. weights they say there is only one part number for replacement weights on all 201 226 series. Also a d 17 spring on a wc gov. will yeild as many high idle rpms as the gleanor spring or the 175 spring if set correctly 2000 rpms but the highest priced 75.00 175 spring holds the rpms under load the highest. Dr. Allis youre right about the gov. spring cover not affecting more than 200 rpms because the bolt is short replaced with alonger bolt it will give more control to lower high idle. Also the lerio gov spring used with the allis gov. will run if set correctly 3600 gov. rpms. As you posted above.

Ok I have to order some parts this week I will check on that part number. I dont know how I was getting less droop with the 175 spring on the wc  gov but it checked right with the books rpm listings on a 175. I must just be lucky I guess.

which weights are the best for the least amount of droop

Edited by mlpankey - 11 Apr 2010 at 8:29pm

Curious Why E weights? I was always told the don't lug down right. My combo is 45 weights and a d17 spring 1700 rpm. had a yellow stripe ? wd45 ? spring and couldn't get under 1900 rpms.

I have the E Gleaner setup on a D17. Running the 20kw generator or grinding feed or the square baler it is smooth as a whistle. Change the load conditions and it don't skip a beat. Using it in the road ditch to make hay and thats when you can tell the E gov. is not setup for tractor work. Up the approach and the gov finally kicks in at the top so you can race down the other side.