Unable to hand crank

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dustyrobbins
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Unable to hand crank

Postby dustyrobbins » Thu Jul 07, 2016 4:52 pm

Gents,

I am revisiting a post from a couple of weeks ago. I described my challenges with my '49 cub and finding myself with an engine that won't turn with the hand crank. I received a number of pieces of information and wanted to provide an update of what I did and seek additional advice on what to try.

1. Tested starter.
2. Rock the tractor in/out of gear.
2. Checked flywheel area. Removed all belts and anything that would put pressure on the shaft.
3. Depress clutch while cranking. In or out, doesn't matter, doesn't turn.
4. Tried to moved the shaft backwards. Didn't use the fan for this, but tried to turn the shaft backwards. Didn't budge.

I have kept the tractor under cover (canopy) since November. The exhaust pipe was exposed at some point and I imagine some moisture 'drips' may have come in, but I am thinking that is a long short....maybe.

Other ideas to try. It does appear locked up. I have been able to turn it over since I received the tractor last December. Starting it is another story (struggling with that too).

Thanks,
Dusty

inairam
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Re: Unable to hand crank

Postby inairam » Thu Jul 07, 2016 5:01 pm

Have you pulled the spark plugs and tried to look in?

I had this happen in the fall just after a new adoption of a '57. I kept putting penetrating oil both off the shelf and the 50% acetone and 50% auto trains fluid in the spark plug hole. I also pulled the oil pan and sprayed the penetrating oil up from the bottom. Not sure which oil worked, but I kept doing the spraying and rocking in gear and hand cranking and over time
( weeks) mine came loose.
When you only have 9 horsepower you need to know the names of all of the ponies!

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Dusty B
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Re: Unable to hand crank

Postby Dusty B » Thu Jul 07, 2016 5:25 pm

Have you removed the starter?? Often the starter gear will wedge on the flywheel and lock everything up!! (Don't ask me how I know this!!). Removing the starter allows the gear on the starter shaft to return. Dusty B
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ScottyD'sdad
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Re: Unable to hand crank

Postby ScottyD'sdad » Thu Jul 07, 2016 6:41 pm

After pulling the starter, as Dusty suggests, try turning the flywheel, with a pry bar.
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John *.?-!.* cub owner
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Re: Unable to hand crank

Postby John *.?-!.* cub owner » Thu Jul 07, 2016 9:03 pm

ScottyD'sdad wrote:After pulling the starter, as Dusty suggests, try turning the flywheel, with a pry bar.
Ed
Do this carefully, I have know people to break a ring gear tooth off doing that.
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dustyrobbins
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Re: Unable to hand crank

Postby dustyrobbins » Fri Jul 08, 2016 12:00 am

Starter was removed with same results. Is the acetone 'off the shelf' or something special when mixing with penetrating oil?

inairam
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Zip Code: 19342
Tractors Owned: 1948 with international 1000 loader
1949 with kub klipper belly mower.
1957 with c-2 mower & c-54 grader blade
1965 lo-boy with c-3 mower
1975 with homemade mower
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide
Circle of Safety: Y
Location: Glen Mills PA

Re: Unable to hand crank

Postby inairam » Fri Jul 08, 2016 5:58 am

When reading about this there are a number of members like kroil oil (Aerokroil) or one of the other commercially sold penetrating oils. There are also a number of members who like to mix 50% acetone with 50% automatic transmission oil.

There is a lot of articles on the internet about the 50/50 mix being as good or better than the commercially sold oils. It really is personal preferences and what works for you. (Basically Your mileage may vary for your application) I have been using the 50/50 mostly because I have it left over in a spray bottle from when I free ed up the engine last fall.
When you only have 9 horsepower you need to know the names of all of the ponies!

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Re: Unable to hand crank

Postby Stanton » Fri Jul 08, 2016 6:16 am

Just be sure to shake/mix the acetone/ATF well prior to applying. They have a tendency to separate.
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ScottyD'sdad
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3 power units
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Re: Unable to hand crank

Postby ScottyD'sdad » Fri Jul 08, 2016 7:20 am

I personally have had no success with the acetone/ATF mix. (Wish I did, since I'm cheap!) I buy Kroil, by the gallon. Have freed up a number of seized engines.
Ed
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