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Hand Cranking a Farmall H

A

Anonymous-0

Well-known Member
Attempting to get my H ready to hand crank. The shaft that sticks out the front of the tractor that pushes in and engages the crank is missing the pin that inserts in the cross hole. Question is what is this pin and where can I get one. I tried a roll pin but it bent the first try. Also, I've been told that H's are notorious for kicking back and breaking your arm. Any tips for safety will be appreciated.
 
ya as soon as you mention hand crank thats the first thing someone comes up with. the very first thing you do is set the points and timing to factory specs. and you will have no problem. the only reason that they kick back is the timing is advanced too much. should only pull up on the crank also instead of complete revolution.you should be able to get that pin made at a machine shop. it is solid steel and not hollow like a roll pin.once you have started it with the crank a few times you will be comfortable starting it.
 
Thanks for the reply. What is the proper terminology/name for this pin? Are they available form any part suppliers such as Steiners? Does it just drive into place? I might add this is a 47H that is still on it's original 6V. It runs like a top, but I use it so infrequently a battery lasts no longer that 2 years. Since it has a magneto I thought I'd go the hand start route.
 
My H has a bolt in the shaft for a pin. But I have never used the crank so don't know if it will last or not.
 
I don't know why a roll pin would bend. But yes, it should be a solid pin. you can make one out of a bolt. just cut the head and threads off. it should stick out about a half inch on eitehr side of the shaft to fill the notches in the crank. To keep from getting your arm broke use quarter turns pulling up on the handle. This only works good if your tractor is equiped with a magneto. If it has a battery ignition distributor you still need a good battery for spark and you may get your arm broke. Distributors do not have the automatic retard built in that a magneto does.
 
The pin is IH part no. 576483R1 and the parts catalog lists the name as Pin, Starting Crank. I obtained one several years ago from my CaseIH dealer as the bolt which was there kept falling out. I really only used the crank on the H for turning the engine over when doing maintanence issues. One thing I haven't seen mentioned in this thread is "don't wrap your thumb around the crank handle" as that is a sure way to get it broken. Lay your thumb along the crank handle or keep it on the backside away from your finger tips. Also only pull the crank handle up when starting your tractor. I had some starter and generator issues with my Super C a few years ago and had to hand crank start it for several days. It is a battery and distributor tractor and it started quite easily with a crank. Good luck and stay safe, Hal.
 
there is a set screw that holds the pin in place. i have used the bolt method also, and grind a flat spot where the screw seats. getting the screw loose can be another major deal for a little thing. thats why i mentioned the one built on a lathe because it can be built to fit the hole snug and it will stay in without the set screw if that gives you grief.
 
Though yours is Mag ignition, a post below indicated that IH Point and coil ignition don't have advance mechanism. This is not true, they are timed at TDC, and have real centrifugal advance that makes the engine idle better, and have timing control at all engine speeds. If timed correctly both are as safe as cranking anything can be. Cup the handle like holding water in your hand, Only pull up from the bottom, or a little left of bottom, and do not try to spin the engine past when the crank handle is at the top. They don't need much to fire them if the carb, and mag (or distributor) are good. JimN
 
A hand crank tractor is about like a mule it will work for you for 10 years for the opportunity ro kick you once. Sooner or later they all will kick.
 
Starting Crank Pin - IH part number 41966D.
Roll pins come in different strengths. I put one in mine four or five years ago; I use it to turn the crank a little every time I shut the tractor down as an alternative to getting a new ring gear. It shows no inclination to bend.
Good luck, Wm
 
Repeat the good advice about pulling UP only. My father broke his arm spinning a Ford T. He probably forgot to retard the timing.
An impulse coupling that is working right will not allow the engine to kick back. If the impulse coupling DOES NOT engage for some reason--the pawl sticks on its pin, or the thing is worn out--then there is danger of kicking back.
My mules never did kick. Lucky, I guess. Cranked
a number of IH tractors from about 1939 through the early 50s, and never had one kick. Great old "mules," though. I listened to my father, however, and never did spin the cranks.
 
(quoted from post at 04:18:36 01/04/10) Starting Crank Pin - IH part number 41966D.
Roll pins come in different strengths. I put one in mine four or five years ago; I use it to turn the crank a little every time I shut the tractor down as an alternative to getting a new ring gear. It shows no inclination to bend.
Good luck, Wm
Click to expand...

Another dirty trick about roll pins is you can take a smaller one and jam it inside the big one. This will make for a much stronger pin.
 
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