49 cub restoration project

Farmall Cub Forum -- Questions and answers to all of your Cub related issues.

Moderator: Team Cub

Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
Bob McCarty
Team Cub
Team Cub
Posts: 9505
Joined: Tue May 25, 2004 8:02 pm
Zip Code: 80501
Tractors Owned: Cubs, MH Pony, Shaw, Allis G, 1934 Silver King, JD LA and LI, Gibson D, David Bradley Tri-Trac
Circle of Safety: Y
Location: CO, Longmont

Re: 49 cub restoration project

Postby Bob McCarty » Sun Dec 16, 2018 3:22 pm

The replacement oil seals for the rear of the engine do not fit tightly in the retainer. You'll need to order one from forum member tst. He machines the retainer to hold a larger OD seal which is then a press fit. He's in New York. You can contact him by PM (private message) or place a "wanted" in the Vine forum.
"We don't need to think more,
we need to think differently."
-Albert Einstein

tst
5+ Years
5+ Years
Posts: 3253
Joined: Tue Jan 12, 2010 2:08 pm
Zip Code: 12514
Circle of Safety: Y

Re: 49 cub restoration project

Postby tst » Sun Dec 16, 2018 5:05 pm

I rebuild a lot of these engines, they can be bored up to .060 no problem, bore the worst cylinder 1st to see what size piston it will required after its cleaned out, if it needs more than .060 it will have to be sleeved to save the block

Spencer
Posts: 19
Joined: Sat Sep 29, 2018 7:06 pm
Zip Code: 00000

Re: 49 cub restoration project

Postby Spencer » Sat Dec 22, 2018 8:56 am

Thanks for the advice we’ve talked to the machine shop and they think we only need to go to .04

Spencer
Posts: 19
Joined: Sat Sep 29, 2018 7:06 pm
Zip Code: 00000

Re: 49 cub restoration project

Postby Spencer » Wed Dec 26, 2018 9:23 am

We need to order a bunch of engine parts and my uncle is driving past Steiner tractor in Michigan. We live in Canada and he could get the parts without duties. Is Steiner the place to buy parts? I need Valves, valve springs, pistons, bearings, gasket kit, etc.

User avatar
Glen
5+ Years
5+ Years
Posts: 3533
Joined: Mon Mar 19, 2012 7:33 pm
Zip Code: 00000
Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
Circle of Safety: Y
Location: Wa.

Re: 49 cub restoration project

Postby Glen » Wed Dec 26, 2018 7:34 pm

Hi,
I don't know what you and the engine shop decided to do, but the shop can probably get engine parts.
They probably have them somewhere in Canada, but I don't know.
Shops usually want new pistons there at the shop before reboring, so they can fit each piston in the cylinders. At least that is what the shop here liked to do.

I guess you can buy parts yourself, if the shop does it either way. :)

Spencer
Posts: 19
Joined: Sat Sep 29, 2018 7:06 pm
Zip Code: 00000

Re: 49 cub restoration project

Postby Spencer » Sun Dec 30, 2018 10:28 am

There is 1 notch on the pulley and there is a key slot for the crankshaft on the inside of the pulley. When I pulled off the pulley the inside sleeve cane out about 3quarters of an inch. I want press it back together. The angle between the notch and the key slot is about 90 degrees. Is that the correct angle, and what keeps it at that angle?

Gary Dotson
Team Cub Mentor
Team Cub Mentor
Posts: 3322
Joined: Thu Aug 03, 2006 6:20 am
Zip Code: 43358
Tractors Owned: 48 Cub Diesel (Cubota)
53 Cockshutt 20 restored (Shooter)
52 Cockshutt 20 unrestored
47 Leader "B" (Herckie)
49 Leader "D" (Princess)
49 Leader "D" very rough
48 Leader "D" unrestored
Kubota B6200E
Kubota B6200HST
Kubota B8200HST-D
Circle of Safety: Y
Location: OH West Mansfield

Re: 49 cub restoration project

Postby Gary Dotson » Mon Dec 31, 2018 9:23 am

I don't know what inner sleeve you are referring to? The crankshaft pulley is a piece of machined cast iron and is not a two part item. I think you may be seeing the machined seal surface protruding from the rear.

User avatar
Dale Finch
5+ Years
5+ Years
Posts: 3937
Joined: Tue Apr 27, 2010 11:34 am
Zip Code: 27517
Tractors Owned: '55 Cub "Bertha"
'55 Cub "Ben"
'56 Cub "Boris"
'48 Super A "Bubba"
Circle of Safety: Y
Location: NC, Chapel Hill

Re: 49 cub restoration project

Postby Dale Finch » Mon Dec 31, 2018 9:49 am

A speedy sleeve previously installed?

Eugene
Team Cub Mentor
Team Cub Mentor
Posts: 17680
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Re: 49 cub restoration project

Postby Eugene » Mon Dec 31, 2018 10:11 am

Spencer wrote:The angle between the notch and the key slot is about 90 degrees. Is that the correct angle, and what keeps it at that angle?
There is a key slot in the end of the crankshaft and another one inside the pulley. The key keeps the pulley properly aligned with the crankshaft.

If the notch you are talking about is the timing notch on the pulley, the notch should line up with the pointer with the engine at TDC. With the slot on the end of the crankshaft located at 12 O'clock, the engine is at TDC on either number 1 or number 4 cylinder.

Perhaps I don't understand the question.
I have an excuse. CRS.

User avatar
Glen
5+ Years
5+ Years
Posts: 3533
Joined: Mon Mar 19, 2012 7:33 pm
Zip Code: 00000
Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
Circle of Safety: Y
Location: Wa.

Re: 49 cub restoration project

Postby Glen » Mon Dec 31, 2018 7:55 pm

Hi,
The original front crankshft pulley is one piece, like Gary said above. There is nothing that would come loose from it.
Below are pics from TM Tractor.
The 2nd pic shows the position of the keyway, and the timing mark, which is at the left in the pic. :)
Attachments
Cub pulley 3.jpg
Cub Pulley 5.jpg
Last edited by Glen on Tue Jan 01, 2019 2:00 am, edited 1 time in total.

cjack
Posts: 36
Joined: Sun Sep 02, 2018 12:12 pm
Zip Code: 00000
Tractors Owned: 49 Farmall Cub
Location: Burlington, ON, Canada

Re: 49 cub restoration project

Postby cjack » Mon Dec 31, 2018 8:00 pm

To clarify Gary's question, when Spencer (my son) started pulling the pulley off, it was 3/4" shorter than what you see in the picture. That narrower part pulled out of the exterior part of the pulley. There does not appear to be any key in between those two parts which would hold the alignment of the crankshaft keyslot vs the notch. The present angle is about 60 degrees - not 90 as Spencer had posted.

I think Eugene's 2nd paragraph answers our question. We can always grind a new notch if the two are now misaligned.

Is our pulley really different from the norm?
Attachments
LRM_EXPORT_179163502908940_20181231_195149298.jpeg

cjack
Posts: 36
Joined: Sun Sep 02, 2018 12:12 pm
Zip Code: 00000
Tractors Owned: 49 Farmall Cub
Location: Burlington, ON, Canada

Re: 49 cub restoration project

Postby cjack » Mon Dec 31, 2018 8:08 pm

Glen, our pulley looks like yours now. But when we started, it was all pushed together, as you can see in my post here:

viewtopic.php?f=1&t=98021&p=813784#p813784

I guess we leave it as it is now?

User avatar
Glen
5+ Years
5+ Years
Posts: 3533
Joined: Mon Mar 19, 2012 7:33 pm
Zip Code: 00000
Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
Circle of Safety: Y
Location: Wa.

Re: 49 cub restoration project

Postby Glen » Mon Dec 31, 2018 8:16 pm

Hi,
There is nothing that can pull out of an original Cub front pulley, they are one piece. The smaller part of it at the rear is where the oil seal runs on it. You can't see the rear part of it when it is installed on the crankshaft.
Be sure the surface for the seal is smooth.
Put some oil on the surface for the seal when you put it together again.

cjack
Posts: 36
Joined: Sun Sep 02, 2018 12:12 pm
Zip Code: 00000
Tractors Owned: 49 Farmall Cub
Location: Burlington, ON, Canada

Re: 49 cub restoration project

Postby cjack » Mon Dec 31, 2018 8:29 pm

OK, I see what you mean. Three of us were there, one guy a former mechanic, we were all sure it was pulling apart. Sorry about all the confusion.

User avatar
Dale Finch
5+ Years
5+ Years
Posts: 3937
Joined: Tue Apr 27, 2010 11:34 am
Zip Code: 27517
Tractors Owned: '55 Cub "Bertha"
'55 Cub "Ben"
'56 Cub "Boris"
'48 Super A "Bubba"
Circle of Safety: Y
Location: NC, Chapel Hill

Re: 49 cub restoration project

Postby Dale Finch » Mon Dec 31, 2018 11:01 pm

I may have missed it, but I assume you will be replacing that front engine seal while you have that pulley off. As you have seen, it is a pain to get access to it, so now is the time! Check to see if you need to add a Speedy (wear) Sleeve...TM Tractors sells them WITH the correct seal:

http://www.tmtractor.com/new/en/472fp.htm

I think it was mentioned, but there is an easy way to reinstall the pulley on the crankshaft when you are ready. Can't find it right now...but will look.


  • Similar Topics
    Replies
    Views
    Last post

Return to “Farmall Cub”

Who is online

Users browsing this forum: Glen and 2 guests