Well, one would think that using cast iron governors and distributor bases would have been a war-time cost cutting method, though the2n war machine had no dizzy, I checked my early 9N yesterday and I have a two-arm aluminum governor with an oil line, and an aluminum base dizzy. I have no idea if they are both original or if they have been swapped out at some point. But, to get back to my original early 9N restoration project I would need to change back the governor to cast iron.

Tim Daley(MI)

I was looking at my cheapo 9N I got last week and it is around s/n31-32xx based on the 2919 sn on the transmission flange. The governor on it is the 4 boss model described by Scott pa and I have not yet removed it, but it does not have the 9N number cast in on the outer side like the cast iron version. It has no provision for external lubrication and my cast iron one does not either. Tractor has a Donaldson air cleaner.

I have a "Howe" governor that came off a 9N. Do you have any information on them?

....it appears that the govenor on the warhorse is made of a cast iron. Don't know when they started or ceased using iron.

Stumpy

Tim.....the 9n12131B2 distributor base [cast iron] was born 3-14-1941.It was optional with the B1 and B3 which were aluminum as were all 9n distributor bases prior to this.The B2 was to be used only when the others were not available.There were early changes to the 9n12131 as you can see by the suffixes,which would be in my opinion,more important to a restoration on a 9n. I have no info on the governors since they were made by and purchased directly from NOVI. don b

Randy Zierks' Reply:

Tim, the distributor base drawing that survives is –B3 (M1588 aluminum) and earliest date on it is 1944. Don Barkley may have older prints, perhaps with other material. Tons of dimensions would have to be different. There had to have been (at least) an –A (and before that one with no suffix) and a –B1 and –B2. The original could have been the C.I. version and the B1 and B2 could have been alternate suppliers’ versions of the aluminum design.

Don’t have anything on governors. Sorry.

Randy

Tim,
The first 9N governors were cast iron with no threaded hole for an oil line. The later 9N governors were cast iron with a tapped hole for an oil line. Later, during the 2N years the governor housing became aluminum which continued through the 8N years.

As for the cast iron distributor housings, I don't know. I have some here on the shelf. I've found them scattered through all models from the early 9N through the last 8N tractors. I think distributors got swapped a lot. There were also at least 3 variations of the aluminum housings. That would be a question for Randy to research.

John

They were taken off because parts broke inside, I may be able to make one good one for our 1939

The very first 9N governors had a removeable mounting flange and had 4 bosses on the bowl part for 4 screws to thread into. I came across about 4 in our shop that were replaced over the years and we sold 2 9n's in the 800 ser.# range and 7 in the 7000 ser.# range so I assume they were used thru at least ser.# 7000 if we changed and kept that many.

Tim....my 9n [8840] has the cast aluminum base distributor and the cast iron governor.My governor says MODEL 9NA on the body.It also has what appears to be a small dia. screw in the area just above the boss where the later oil line fitting would go.This small screw in plug or screw is about 1/4" in dia. with a slotted head.
As for what John Smith says....he may be right but the info I posted came from the original prints.They state....9n12131 distributor base...4-21-1939... part made from #2 aluminum alloy.The 9n12131B was the same as the "A" except one of the 1/8 "holes were omitted in the bottom of the base that was for ventilation, to prevent condensation on 11-17-1939.BUT....lots of things don't necessarily jive with prints,especially on the first few tractors.Your call!!! don b

And the same thing applies to this....I would have no idea if this govenor has been replaced or not. Food for thought.....My war time 2N has most all of the 9N features, I beam radius rods, smooth doglegs with a cast axle support. Obviously doesn't have a distributor so the aluminum vs cast iron is out there.

The 2N's started getting newer parts.....1944..ish?

Stumpy

My 39 9n #4xxx had cast iron gov. I ordered a repair kit and it would not fit becaue the cast iron gov. shaft is smaller on the end toward carb. I did not try changing the bushing.