Oil dip stick

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.
Brodalick
Cub Star
Cub Star
Posts: 124
Joined: Mon Feb 12, 2018 4:59 pm
Zip Code: 28540
Tractors Owned: 1948 Cub
Location: Jacksonville NC

Oil dip stick

Postby Brodalick » Sun Mar 25, 2018 5:30 pm

I have lots of blow-by around my oil dip stick. I am guessing that is normal for a 70 year old cub. My question is, Is the oil dip stick suppose to fit snug or loose? Mine is really loose and can be removed with little effort.

User avatar
MiCarl
Cub Star
Cub Star
Posts: 127
Joined: Sat Dec 16, 2017 8:28 am
Zip Code: 48154
Tractors Owned: 1948 Farmall Cub
1994 Speedex 1631
Location: Livonia, MI

Re: Oil dip stick

Postby MiCarl » Sun Mar 25, 2018 5:34 pm

Make sure the dip stick is all the way in. On my '48 when it first feels like it's in if I push just a little harder it snaps down another 3/4".
1948 Farmall Cub
1994 Speedex 1631

User avatar
Willy
Cub Star!!
Cub Star!!
Posts: 478
Joined: Sun Oct 22, 2017 4:54 pm
Zip Code: 38330
Tractors Owned: 1951 Cub Lil Red
Location: Dyer, TN

Re: Oil dip stick

Postby Willy » Sun Mar 25, 2018 5:42 pm

Sometimes, I have to twist and turn mine to get it to go all the way down.
Waking up the ol' Cub

Nah, it's not leaking oil. It's just marking it's territory.

staninlowerAL
5+ Years
5+ Years
Posts: 3397
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: Oil dip stick

Postby staninlowerAL » Sun Mar 25, 2018 5:47 pm

It does not seal, the crank case breathes through the dipstick cover. The screen should be cleaned periodically. Check the owners manual. Blowby is a common symptom of worn rings. I'd bet your compression is low, thus the blowby. I read back through your posts but did not find any compression check information.

Brodalick
Cub Star
Cub Star
Posts: 124
Joined: Mon Feb 12, 2018 4:59 pm
Zip Code: 28540
Tractors Owned: 1948 Cub
Location: Jacksonville NC

Re: Oil dip stick

Postby Brodalick » Sun Mar 25, 2018 6:00 pm

No compression check, but it seems to be very low. Using hand crank it turns over very easy.

Matt Kirsch
10+ Years
10+ Years
Posts: 4581
Joined: Tue Jun 08, 2004 3:04 pm
Zip Code: 14559
Circle of Safety: Y
Location: Rochester, NY

Re: Oil dip stick

Postby Matt Kirsch » Mon Mar 26, 2018 1:37 pm

What's more important than actual compression is, does the Cub start easily and run well? Does the Cub have the power do perform the job you need it to do, provided that job is appropriate for a Cub? Does the engine maintain good oil pressure even after having been worked?

A little smoke is nothing to worry about. You can buy a LOT of oil for what it will cost to have the engine overhauled, even if you do most of the work yourself.

Brodalick
Cub Star
Cub Star
Posts: 124
Joined: Mon Feb 12, 2018 4:59 pm
Zip Code: 28540
Tractors Owned: 1948 Cub
Location: Jacksonville NC

Re: Oil dip stick

Postby Brodalick » Mon Mar 26, 2018 1:46 pm

Cub cranks very easy and runs great. Down on power quite a bit. Two hilers will bog it down in 2nd gear with no attachment on the rear. I hate to do a complete overhaul. If I could get away with maybe just rings and can shaft bearings, I may tackle it. Never completely rebuilt an engine before, nor have I ever split a cub into 3 pieces.

staninlowerAL
5+ Years
5+ Years
Posts: 3397
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: Oil dip stick

Postby staninlowerAL » Mon Mar 26, 2018 2:12 pm

Suggest a complete tune up, including valve adjustment and plug wires (if they're not in good condition). Run the engine under load with SEAFOAM in the fuel and oil and your compression might just come up some. It's not a "repair in a can" but it can help in some situations. Not much to loose at less than $10/can.

Brodalick
Cub Star
Cub Star
Posts: 124
Joined: Mon Feb 12, 2018 4:59 pm
Zip Code: 28540
Tractors Owned: 1948 Cub
Location: Jacksonville NC

Re: Oil dip stick

Postby Brodalick » Mon Mar 26, 2018 3:35 pm

New plugs, but the distributor cap and rotor button look like they came on the tractor, along with the plug wires. Tractor runs so good I hated to replace anything that seemed to work. I am studying up on the valve adjustments but I need to get a gasket before I tackle that. I have sprayed seafoam in the air intake with tractor running but never put any in the oil or gas. I will try all those things before I tear into the engine. The old tractor is only used for a garden and to haul pine straw, but I hate to drive anything that smokes or blows oil.

User avatar
Glen
5+ Years
5+ Years
Posts: 2526
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: Oil dip stick

Postby Glen » Mon Mar 26, 2018 6:54 pm

Hi,
I would suggest the tune up like Stan said above, and set the ignition timing. The timing being wrong can make the power low, even though it runs good sitting in one place.
A 1948 Cub would have come with a magneto when it was new. I don't know if you have a magneto, or if it has been changed to a Battery Ignition unit.
Check the timing with a timing light, like was used on cars, when cars had distributors.

Below is a page from the 1949 Cub owner's manual showing how to adjust the valve clearance. Maybe you already saw it. :)

http://farmallcub.com/rudi_cub/www.clea ... age-39.jpg

staninlowerAL
5+ Years
5+ Years
Posts: 3397
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: Oil dip stick

Postby staninlowerAL » Mon Mar 26, 2018 8:01 pm

You've probably already seen the magneto ignition with an external coil because the original internal is bad.

Brodalick
Cub Star
Cub Star
Posts: 124
Joined: Mon Feb 12, 2018 4:59 pm
Zip Code: 28540
Tractors Owned: 1948 Cub
Location: Jacksonville NC

Re: Oil dip stick

Postby Brodalick » Tue Mar 27, 2018 1:51 pm

Ran sea foam through engine oil and gas. Complete tune up and adjusted timing. Oil blowing out oil dip stick now is nearly twice as bad. If you remove the dip stick while the engine is running you will get a good oil bath. Guess the sea foam dislodged years of sludge. Looks like the engine work is in the near future.

User avatar
Don McCombs
Team Cub Mentor
Team Cub Mentor
Posts: 13304
Joined: Mon Feb 03, 2003 6:45 am
Zip Code: 21550
Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A
Circle of Safety: Y
Location: MD, Deep Creek Lake

Re: Oil dip stick

Postby Don McCombs » Tue Mar 27, 2018 1:56 pm

Have you cleaned the crankcase vent pipe between the block and the air cleaner? Also, make sure the dipstick is fully seated.
Don McCombs
MD, Deep Creek Lake

Image
Proud Member of Maryland Chapter 39

Brodalick
Cub Star
Cub Star
Posts: 124
Joined: Mon Feb 12, 2018 4:59 pm
Zip Code: 28540
Tractors Owned: 1948 Cub
Location: Jacksonville NC

Re: Oil dip stick

Postby Brodalick » Tue Mar 27, 2018 2:29 pm

If the Vent pipe is the small copper line, then us it is has been checked and is wide open. Oil cap does not fit tight at all and can he pulled out with two fingers with little pressure.

Jim Becker
Team Cub
Team Cub
Posts: 13571
Joined: Sun Feb 02, 2003 2:59 pm
Zip Code: 55319
Circle of Safety: Y
Location: MN

Re: Oil dip stick

Postby Jim Becker » Tue Mar 27, 2018 3:04 pm

The oil caps certainly don't all feel the same. However, I have not run into one as loose as you make this one sound. Are you sure you are putting it in all the way? Wiggle it around and make sure you have it centered and see if it will go on some more. If you fill it to the full mark without it fully seated, you will have way too much oil in it and it will throw oil back out. It isn't unusual for a worn engine to blow smoke out the breather, but throwing liquid oil is a whole different story.


  • Similar Topics
    Replies
    Views
    Last post

Return to “Farmall Cub”

Who is online

Users browsing this forum: Freddy, JBOnly and 4 guests