Opinions please.

jd2cyl1943

Member

Location

Bemidji, MN

• Aug 8, 2023

• #1

My crank needs replaced. This is a crank I found that's $125 plus $100 shipping. Does it look like it would be good to stick in my B with out machining? The surface rust could be removed with emery cloth. The pits wouldn't cause problems. What do you think? I can't afford to have my current crank ground and spray welded back to standard.

 

J Hamilton

Well-known Member

Location

Southern Illinois

• Aug 8, 2023

• #2

My opinion is... Is it a trusted seller and is it guaranteed to be good? Also if I were to buy a used crank, I would take it to my trusted machine shop to be checked, cleaned and possibly turned if needed.

 

T

teddy52food

Well-known Member

• Aug 8, 2023

• #3

Only way to know is to get it miked out.

 

Geo-TH,In

Well-known Member

• Aug 8, 2023

• #4

Can buy from Amazon

LYFJXX Emery Cloth Roll, 5 Grits Abrasive Sand
Paper Set, 150 240 320 400 600 Grit Sandpaper
Rolls for Wood Metal Polishing with Dispenser,
Each Roll (6M)

$19.99 List: $26.99

If you are on a budget try to clean up your old crank.

 

R

redforlife

Well-known Member

• Aug 8, 2023

• #5

If your not going to go to the field and be
plowing all day (which I doubt you will), I
wouldn't get to picky. I don't think I'd
take emery cloth to one though. I'd avoid
that if at all possible. I'd only resort to
that if I absolutely had to. And I have
never had to. Not on a crankshaft.

 

Janicholson

Well-known Member

• Aug 9, 2023

• #6

Polishing with 1000 grit silicon carbide will be good. Make sure nicks and high spots are removed without making a pocket around it. (use a flat plastic piece to hold the abrasive while removing the nicks. Don't over do it. Jim

 

Janicholson

Well-known Member

• Aug 9, 2023

• #7

Flush all passages with brake clean after polishing, as well as the journals. Jim

 

R

RESLLS

Well-known Member

• Aug 9, 2023

• #8

Crocus cloth, not emery. It's 1000 grit.
Kid worked at Trenton engine plant. It's
what they used.

 

Ultradog MN

Well-known Member

Location

Twin Cities

• Aug 9, 2023

• #9

Correct answer.

 

M

Mark-Ia

Well-known Member

• Aug 9, 2023

• #10

Very common for a two-cylinder crank to be egged
shaped. You may be able to use the original crank

 

F

Fritz Maurer

Well-known Member

• Aug 9, 2023

• #11

What happened to your original crank? Cant you
turn it to the next undersize?

 

M

Mike(NEOhio)

Well-known Member

Location

Newbury, Ohio

• Aug 9, 2023

• #12

Those journals look pretty good unless they're way out of round. Polish them up with real fine emery cloth or silicon-carbide paper, nothing less
than 600 grit. Small pits will not hurt and if they have any rust use EvapoRust to get it out. Wire wheel the splines then EvapoRust for what's
left. They look straight and unworn.

 

C

caterpillar guy

Well-known Member

• Aug 9, 2023

• #13

I'd want to mic the old crank first then see what is happening. An egged crank if not to bad can be run and with tight bearings will round up some over time. Dad had an old Dodge truck so out of round you had to check it would turn one revolution each time he put in the bearings and shimmed them. when he was done it ran and ran fine for many years. We hauled grain and later it became out soybean meal truck would get 2-4 ton at a time. Those bearings are still in that engine from probably about 45-50 years ago.

 

Crazy Horse

Well-known Member

• Aug 9, 2023

• #14

In addition to doing an excellent job on your project, the experience and knowledge you have gained since your project began is priceless. I sincerely hope though that when all the dust settles you don't have what some might call 'financial regret'. I have no idea of how deep your pockets are, hopefully you can handle it. Good luck finishing it up ....

 

F

Fritz Maurer

Well-known Member

• Aug 9, 2023

• #15

Another thing... call these people and find out if they
know anything about it, other than what it came out
of. Do not buy it if the seller does not know the
dimensions; you can end up with something worse
than what you have. Cant just post a picture of a
precision carving and ask ,, is it any good,,

 

Loosehandle

Well-known Member

Location

Wisconsin

• Aug 9, 2023

• #16

Need better picture of driving disk
splines, they are weak spot on wartime B

 

W

wilson ind

Well-known Member

• Aug 9, 2023

• #17

shipp with fasenaqll blue freight much cheaper

 

560Dennis

Well-known Member

Location

Madison,Ohio

• Aug 9, 2023

• #18

(Does it look like it would be good to stick in my B with out machining. This is guessing that it is ok. I dont think you should do this .
I recommend you not buy unless you measure that crank and compare it to known recommended standards.

If it doesnt return it to seller with full refund. Or get a certificate crankshaft critical measurements and have it checked for fractures .
Hate to see you buy this with out some assurance it ok .

 

S

ss55

Well-known Member

• Aug 9, 2023

• #19

What is the problem with your existing crankshaft? While far from perfect it might be OK for hundreds of hours of parade duty, garden plowing, tractor rides, mowing, occasional field work, etc.

At this point you might get more great experiences and enjoyment from getting the tractor running again than you will from throwing a lot of money into it. You can always spend the big money on it after you are established in life and career. By then the cost to replace the crankshaft will simply be pocket change to you.

Enjoy your tractor and have fun.

 

P

Patsdeere

Well-known Member

• Aug 9, 2023

• #20

Who's the seller? If we know the seller,
I'm sure someone knows them and can vouch
or discourage you from that seller.