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Old Warrior @ 400rpm - thanks Dell

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Ramrod

06-08-2005 19:16:38

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Got tired of messing with the Chinese proof meter and cable, and low and behold, CNH had both in stock, both made in USA. The new stuff works smooth as silk, easily worth the extra bucks, and I can send it back to Florida if it needs repair. So since I had such a fine new tach, decided to adjust the carb. Old Warrior had been idling at 600rpm since the rebuild, and no slower, but I drug out Dell's instructions from way back when and followed them. I never woulda thought it, but now I can easily idle it down below 400rpm, and it starts right up without touching the choke. From a slow idle, nail the throttle, and it roars to life without a second thought. I need to set up the governor now, and that'll be a done deal. Thanks Dell!

Now how do I set up the guvner?

Ramrod

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Lytemup

06-09-2005 13:56:37

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Re: Old Warrior @ 400rpm - thanks Dell in reply to Ramrod, 06-08-2005 19:16:38

How do you tell the China proofmeters from a good USA one (besides a 'made in china' sticker). Is there any noticable exterior difference? Is the one for sale on this site and ebay etc the China version?

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Ramrod

06-09-2005 14:07:45

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Re: Old Warrior @ 400rpm - thanks Dell in reply to Lytemup, 06-09-2005 13:56:37

The USA made one won't have the long light post sticking out the back where you make the connection to illuminate, instead it will have the standard 5/8" hole for the instrument lamp. The face is slightly different, with a larger black bezel, and a smaller needle. It will have standard 10-32 threads, be heavier and work much smoother than it's Chinese cousins. Only available from CNH as far as I know, and costs about 2x as much.

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Dan

06-09-2005 07:06:13

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Re: Old Warrior @ 400rpm - thanks Dell in reply to Ramrod, 06-08-2005 19:16:38

Governor adjustment is as easy as screwing/unscrewing the solid top governor linkage shaft from the threaded ends so there is no real pressure on the end spring when the throttle lever is all the way up (idle). Then do the same thing on the lower governor to carb shaft. I get it so the carb is completely closed when the throttle lever is all the way up and the carb is all the way open and hitting the stop when the throttle linkage is all the way at the bottom. Then set your max RPM stop bracket on your top governor shaft up against the stop that is under your manifold. Easy as pie. The only problem I still have is that rebuilt NAA governor is STRONG and keeps pulling my throttle lever back down to lower RPMs. I found a spring and nistalled it on the bell crank - no help. I tightened the bell crank down on the friction pad until it is hard to move the throttle lever - no help.

I sure wish I could figure out how to counter the governor pull before I need it to brush hog. It would be a bummer if I had to keep one hand on the throttle lever just to keep the RPMs up...

Good luck,
Dan

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Rick H. Ga.

06-09-2005 08:04:11

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Re: Old Warrior @ 400rpm - thanks Dell in reply to Dan, 06-09-2005 07:06:13

Good explanation, Dan and Rob.

When I put my 53 Jubilee project tractor back together I didn't mess with the govenor/carb linkage per-sa. It all seems to work fine and I have the low idol set @ 400 rpm and high idol set @ about 1800 rpm. The governor has a good response to load increases.

So far so good. Now I have more information if I ever need do any adjustments. Thanks.

Rick

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Dan

06-09-2005 08:33:10

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Re: Old Warrior @ 400rpm - thanks Dell in reply to Rick H. Ga., 06-09-2005 08:04:11

Funny you should mention the high idle at 1800 RPMs Rick. The NAA manual states the idle should be at 450 RPMs and the max RPMs set at 2200 RPMs. My NAA Project Rustbucket will idle down to 300 RPMs if I wanted, but I set it at 450 RPMs because it sounds better. But - my max RPMs is only about 1800 RPMs or so - this is with it hitting the carb stop and the linkage as far open as it will go. In essence - I CAN'T get to 2200 RPMs. I thought "maybe" my rebuilt original proofmeter was off (it is very old and kinda jumpy when running), but your statement of the same range of RPMs is consistant with mine. And, I am sure your Proofmeter is new.

Anybody out there getting more than 1800 RPMs on their NAA?

Dan

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Ramrod

06-09-2005 17:13:37

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Re: Old Warrior @ 400rpm - thanks Dell in reply to Dan, 06-09-2005 08:33:10

Here's Old Warrior after guvner setup at full power. I could easily go to 2400rpm. The link shows it at idle. These are all USA made gauges, CNH Proof Meter and Datcom electronic oil pressure, water temp, and voltmeter. Have you adjusted your idle mixture for max rpm at idle?

Ramrod

Old Warrior at Idle

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Dan

06-09-2005 17:38:50

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Re: Old Warrior @ 400rpm - thanks Dell in reply to Ramrod, 06-09-2005 17:13:37

Yep - carb is adjusted right - idles like a champ. May be a little lean on the top end as it backfires when I drop it from a full rev to idle quickly. How are you countering the governor pull at high RPMs?

Say - is that oil pressure 20 lbs at idle and 45 at just over 2100 RPMs??? What are you using for oil - 0w-5? And, you could start a hardware store with all the grade 8 bolts on your tractor!

Dan

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Ramrod

06-09-2005 18:17:03

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Re: Old Warrior @ 400rpm - thanks Dell in reply to Dan, 06-09-2005 17:38:50

First I pushed the idle speed screw down with my thumb to make sure it was all the way down and at 450rpm, then I set the length on the lower rod to hold it at 450rpm. Next I unscrewed the slug inside the spring on the upper rod so that it just touched the guvner vertical shaft. Then I fired it up and opened the throttle and made sure it was really all the way open, noted rpm at 2400+, then eased the throttle down to 2100rpm, and set mech stop on upper rod to hit bracket that it passes through to set max rpm at 2100. Fiddled around with jets at max to see if it made difference, didn't help, set them back, dropped to idle, reset idle mix for max rpm, and tightened lock screws. Got the camera, you know the rest. I love grade 8, it's shiny.

Ramrod

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Rob

06-09-2005 05:15:05

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Re: Old Warrior @ 400rpm - thanks Dell in reply to Ramrod, 06-08-2005 19:16:38

Setting up the govenor is what you make it. First you make the linkages fit, you aren"t adjusting anything with the linkages.
The adjustment is in the spring. I"m real nit-picky because if it"s a little off it shows big in the hand throttle or carb. You bend the end of the spring to adjust. You might find some slop in the spring, if there isn"t bend it some so there is. Then get your 1/64" division rule and measure the amount of slop. Remove the spring, measure the total length of the spring, subtract the amount of slop from the total length, and bend the end of the spring to make it shorter to the the subtracted length. Reinstall the spring and check to see that there is no preload on and no slack in the spring. That"s it, closer the better.
If you don"t have one, get a governor compression spring for the throttle linkage so the governor will not displace your hand throttle setting.

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Dan

06-09-2005 08:37:02

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Re: Old Warrior @ 400rpm - thanks Dell in reply to Rob, 06-09-2005 05:15:05

Were do you find this spring? I had to guess at length and strength and bought up a few springs at the local hardware store to use. I am sure it is not right per OEM specs.

Dan

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Rob

06-09-2005 09:03:22

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Re: Old Warrior @ 400rpm - thanks Dell in reply to Dan, 06-09-2005 08:37:02

I"m not even sure what tractor you"re talking about now! I was adjusting the 1939-52 governor spring.

Anyway...

The NAA 9827-B spring (governor compensating) goes on the "53. CNH has them. 8.14" free length- .44" O.D. That should hold the hand throttle in place for you.

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Rick H. Ga.

06-09-2005 05:00:19

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Re: Old Warrior @ 400rpm - thanks Dell in reply to Ramrod, 06-08-2005 19:16:38

Hi Ramrod,

Exactly what are you referring to when you say set up the governor?

Are you talking about adjusting the linkage between the carb throttle and the governor?

Maybe I will learn something here. Thanks.

Rick

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