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.
User avatar
Dale Finch
5+ Years
5+ Years
Posts: 3475
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 » Tue Jan 01, 2019 12:16 am

Here it is...I had THOUGHT it was an actual HOW TO. The post made by Raymond Durban is the procedure I watched him do at DSCF one year, and it worked beautifully!! I've now used it twice by myself. Use liberal amounts of anti-sieze, and a box end wrench and just keep cranking!
http://farmallcub.com/phpBB2/viewtopic.php?f=1&t=81462&p=662957&hilit=Crankshaft+pulley#p662957
Image
Attachments
5218f0c37bd8b1666c4c5a53fef3daaf_zps417bd9b5.jpg

User avatar
Glen
5+ Years
5+ Years
Posts: 3014
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 » Tue Jan 01, 2019 1:36 am

Hi,
Below is the Cub service manual, if you don't have it. The engine is in section 1. I would read it, it has lots of info. :)

http://farmallcub.com/rudi_cub/www.clea ... index.html

It tells about installing a new front oil seal on page 1 - 41, in paragraphs 5 and 7. It says don't tighten the front cover bolts until you install the pulley, so the pulley will be centered in the seal, then tighten the cover bolts.

http://farmallcub.com/rudi_cub/www.clea ... -01-41.jpg

Spencer
Posts: 18
Joined: Sat Sep 29, 2018 7:06 pm
Zip Code: 00000

Re: 49 cub restoration project

Postby Spencer » Fri Jan 11, 2019 4:53 pm

Thanks for answering everyone,
I have six volt system and I saw in another thread that someone tested there engine without battery or generator. Is this indeed possible? If so what is the purpose of the wire that goes from the ignition coil to the ignition swich? Is that just a cutout swich and how does it work?
What is the best way to get a broken cam gear off the camshaft?
Some of my camshaft lobes are pointed but some are rounded, does this matter or is the only important thing the difference between the two measurements as outlined in the manual?

Spencer
Posts: 18
Joined: Sat Sep 29, 2018 7:06 pm
Zip Code: 00000

Re: 49 cub restoration project

Postby Spencer » Sat Jan 12, 2019 7:47 pm

I measured the camshaft lobes and the lift on all of them is above .227 inches, so I think it’s ok. Sugggestions for how to get the rest of the broken gear off would be welcome. I’m thinking of using a dremal tool.

staninlowerAL
5+ Years
5+ Years
Posts: 3714
Joined: Fri Oct 29, 2010 11:34 pm
Zip Code: 36558
Tractors Owned: Cubs: (3)'49's, (1)'52, (1)'57 IH Cub LoBoy w/FH, (1)'72 154 Number Series Loboy, '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '53 MM BG (offset), (2) '49 Avery V's, '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76 Yanmar 1500, Sears Surburban's, MTD's, Jeeps & other misc. "treasures"
Circle of Safety: Y
Location: AL (Southwest)

Re: 49 cub restoration project

Postby staninlowerAL » Sat Jan 12, 2019 8:24 pm

Spencer wrote:Thanks for answering everyone,
I have six volt system and I saw in another thread that someone tested there engine without battery or generator. Is this indeed possible? If so what is the purpose of the wire that goes from the ignition coil to the ignition swich? Is that just a cutout swich and how does it work?
What is the best way to get a broken cam gear off the camshaft?
Some of my camshaft lobes are pointed but some are rounded, does this matter or is the only important thing the difference between the two measurements as outlined in the manual?

Looking back at this post, I see your cub is a '49 which would have had a magneto. If it is still a true functioning mag you can start the engine with the starting motor. No other electrical connections are necessary other than the plug wires and the coil wire, since the magneto produces the electrical energy to run the engine. You need a way to ground the mag post to stop the engine when you're ready to do so. That's the purpose of the ignition "kill" switch which grounds the mag to the frame of the tractor. This type switch has only one wire (from the mag). On the other hand, the battery ignition switch has 2 wire connection points which allows the current to pass from the battery to the coil when the switch is in the "on" position and interrupts this current flow in the "off" position, thus depriving the coil of the current necessary to supply the engine to allow it to start/run. If you have the cam shaft out of the block you should be able to press the gear off the shaft, otherwise you'll probably have to resort to heat or cutting it off. I'll pass on the other question. Good luck, I'm following your progress with interest and congrats on restoring your family tractor.

User avatar
Glen
5+ Years
5+ Years
Posts: 3014
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 » Sun Jan 13, 2019 3:10 am

Hi,
If some of the camshaft lobes are worn down, or some of them are rough, it would be better to replace the camshaft while you have the engine apart.
You should look at the bottoms of the valve lifters, that the camshaft runs on, and see it they look good, or some of them are worn. The worn or rough ones need replacing too, to use a different camshaft.

J P Tractor Salvage at the bottom of the page might have the used parts. The guys on here say that they have good service there. :)

Spencer
Posts: 18
Joined: Sat Sep 29, 2018 7:06 pm
Zip Code: 00000

Re: 49 cub restoration project

Postby Spencer » Sun Jan 13, 2019 1:07 pm

Here are my camshaft and lifters. The surfaces are pretty rough.
Attachments
C78B06C5-CC93-40F4-B6C0-6E197CEF0081.jpeg
C78B06C5-CC93-40F4-B6C0-6E197CEF0081.jpeg (51.36 KiB) Viewed 498 times

User avatar
Glen
5+ Years
5+ Years
Posts: 3014
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 » Sun Jan 13, 2019 8:34 pm

Hi,
I can't see the parts well in the pic, it's sort of too small.
If they have rust from sitting, or hard goop built up from use in the past, you can use a wire wheel, or sand it off with fine sandpaper.
If the parts look worn and not in normal condition, it would be better to replace them. :)

Gary Dotson
Team Cub Mentor
Team Cub Mentor
Posts: 3188
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 Jan 14, 2019 8:42 am

I took a look at a couple used camshafts, yesterday, and I see no significant difference between the profile of the intake versus exhaust lobes. If you have a visible difference, by all means replace your shaft. Good used ones should be plentiful. Get the lifters with it.

cjack
Posts: 32
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 » Tue Jan 15, 2019 8:58 am

Spencer asked me to post these photos. The 1st, 4th, 5th and 8th lobes on our camshaft are more rounded. Also shown are typical pitting on lobes and lifters after wire-wheeling. I think we will probably replace all these parts.
Attachments
LRM_EXPORT_1996537938059_20190115_085129696.jpeg
Pitting on lifter
LRM_EXPORT_1958533269688_20190115_085051691.jpeg
Pitting on lobe
LRM_EXPORT_1926175202252_20190115_085019333.jpeg
Pointed lobe
LRM_EXPORT_1893305837942_20190115_084946464.jpeg
Rounded lobe

Gary Dotson
Team Cub Mentor
Team Cub Mentor
Posts: 3188
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 » Wed Jan 16, 2019 8:58 am

I'd replace them.

Spencer
Posts: 18
Joined: Sat Sep 29, 2018 7:06 pm
Zip Code: 00000

Re: 49 cub restoration project

Postby Spencer » Fri Jan 25, 2019 8:02 am

Thanks for responding everyone,
A special thanks to tst who machined my rear oil seal retainer. I’ve also ordered a new camshaft and lifters.

Spencer
Posts: 18
Joined: Sat Sep 29, 2018 7:06 pm
Zip Code: 00000

Re: 49 cub restoration project

Postby Spencer » Fri Feb 08, 2019 11:30 am

I got my engine block back, and the valves in. I also got the crankshaft and bearings. When I opened the main bearings I noticed that they have scratches on them. I’m not sure if I should use them.
Attachments
18B2C665-459E-44FE-BAE2-81331A4A82D7.jpeg
18B2C665-459E-44FE-BAE2-81331A4A82D7.jpeg (27.37 KiB) Viewed 274 times

User avatar
Ken (48 Cub)
10+ Years
10+ Years
Posts: 887
Joined: Mon Feb 03, 2003 11:10 am
Zip Code: 40023
Tractors Owned: 1948 FCub
Circle of Safety: Y
Location: KY, Fisherville

Re: 49 cub restoration project

Postby Ken (48 Cub) » Fri Feb 08, 2019 11:40 am

Check those rod bearings too. The earlier rod bearings are wider. I went round and round with the machine shop over this.
Ken, Annie the '48 Cub & Marie the '57 Loboy.

I think we gotter if'n she don't kick, Andy Griffith.

User avatar
Glen
5+ Years
5+ Years
Posts: 3014
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 » Fri Feb 08, 2019 7:03 pm

Hi,
I guess you meant you bought another crankshaft, or had the one you had worked on in the shop, and bought new bearings.
The bearing in the pic above is not real good. The new bearings should have no scratches.
I would tell the place you bought them that they are damaged.
It's better to replace all the crankshaft bearings when you have the engine apart, if you want it to run for years with no problems.

The crankshaft surfaces for the bearings should be smooth too.
When putting the engine together, each bearing should be checked with Plastigauge, to be sure it has the right clearance. The clearances are shown in the Cub service manual. Maybe you knew this already.
:)


  • Similar Topics
    Replies
    Views
    Last post

Return to “Farmall Cub”

Who is online

Users browsing this forum: No registered users and 2 guests