Cooling fan failure

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
artc
Cub Pro
Cub Pro
Posts: 1860
Joined: Sun Mar 30, 2003 10:25 am
Zip Code: 06457
eBay ID: cmtelephone
Tractors Owned: Restored: 1950 Cub, 1950 Cub Demo, 1948 super AI, 1935 Silver King, 1946 Oliver 60 RC, John Deere M

In working clothes:
1950 cub, 1948 cub, 1941 A, 1948 H, 1963 B414, 1958 240U, 1947 Oliver 60 industrial, Oliver 70 industrial. IH 450,
Location: CT, Middletown

Re: Cooling fan failure

Postby artc » Mon Dec 15, 2014 10:54 am

you can also drill that governor cross shaft and put a 1/8 roll pin to prevent any rotation in that area.

Also look at each connection from that point to the throttle plate. the pin, hole and yolk that attaches the carb rod to the governor cross shaft, the throttle plate hole and the rod, and where the cross shaft is mounted to the front cover.

I have my demonstrator tractor in the shop now (restored 8 years ago) for general maintenance and noticed a little slop in that cross shaft, which i had drilled and installed set screws in to hold it. they had worked loose. So, I'm going to change to governor to a power unit 2400 rpm, drill the cross shaft, and replace the throttle rod, all in an effort to restore eliminate slop and give the tractor some pep! 12V and Pertronics as well :-:-): :{_}:

the goal, as Don said, is zero slop.
'If they're tappin', they're not burnin'
http://www.ZagrayFarmMuseum.org

User avatar
Peter Person
Cub Pro
Cub Pro
Posts: 3468
Joined: Fri Nov 18, 2005 4:27 pm
Zip Code: 06076
Circle of Safety: Y
Location: CT, Stafford Springs

Re: Cooling fan failure

Postby Peter Person » Mon Dec 15, 2014 12:42 pm

OK, so I'm hijacking this thread for my own edification. I will be lubing the fan while the hood is off.
In the picture below I've tried to show what I'm describing as "freeplay". Tractor not running, hold the rod from the lever to the throttle and move front to back. Range of motion is about 3/4" at the clevis. Anything to be concerned with?
Thanks,
Peter
Attachments
Cub Governor Arm Freeplay.jpg
1957 Farmall Cub "Emory", Fast-Hitch, L-F194 Plow & Colter, L-38 Disc Harrow, Cub-54A Blade, Cub-22 Sickle Bar Mower, IH 100 Blade

Image

Circle of Safety

BigBill
10+ Years
10+ Years
Posts: 6165
Joined: Sat Jul 22, 2006 5:02 pm
Zip Code: 00000
Location: in northern usa

Re: Cooling fan failure

Postby BigBill » Mon Dec 15, 2014 1:10 pm

A squirt oil can is your tractors best friend. I would lube the governor shaft bushings too. Besides a few drops on the spring holes.

Tell me how often have you greased the zerks? Be honest?
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.

User avatar
Don McCombs
Team Cub Mentor
Team Cub Mentor
Posts: 12713
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: Cooling fan failure

Postby Don McCombs » Mon Dec 15, 2014 2:06 pm

Peter Person wrote:Anything to be concerned with?

Absolutely! As you rotate that lever through it's range of movement, use your flashlight and observe what's happening at the other end of the rod. :D
Don McCombs
MD, Deep Creek Lake

Image
Proud Member of Maryland Chapter 39

User avatar
Peter Person
Cub Pro
Cub Pro
Posts: 3468
Joined: Fri Nov 18, 2005 4:27 pm
Zip Code: 06076
Circle of Safety: Y
Location: CT, Stafford Springs

Re: Cooling fan failure

Postby Peter Person » Mon Dec 15, 2014 2:33 pm

Don,
As I recall, the governor spring does not come under tension until the freeplay is taken up leading me to believe one of two conditions exist.
1) the connection points for the governor spring have "wallered" out or,
2) the internals of the governor are worn,
3) a little of both.

What's next Dr. Don? :)
1957 Farmall Cub "Emory", Fast-Hitch, L-F194 Plow & Colter, L-38 Disc Harrow, Cub-54A Blade, Cub-22 Sickle Bar Mower, IH 100 Blade

Image

Circle of Safety

User avatar
Glen
5+ Years
5+ Years
Posts: 1848
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: Cooling fan failure

Postby Glen » Mon Dec 15, 2014 7:36 pm

Hi,
Here is a page from the Cub owner's manual showing how to check the oil in the fan hub, if you don't know how. There's a pic, and the info is on the right of the page. Click on the pic makes it bigger. :)

http://www.cleancomputes.com/Cub/Cub%20 ... age-26.jpg

offrink
Cub Star!!
Cub Star!!
Posts: 336
Joined: Thu Jan 02, 2014 4:23 pm
Zip Code: 49316
Tractors Owned: 1954 farmall fcub, 1954 farmall super m
Location: Caledonia, MI

Re: Cooling fan failure

Postby offrink » Mon Dec 15, 2014 8:33 pm

Does anyone have a photo of what the fan's oil screw looks like? Do you ever have to drain the oil or just fill it.

Bob McCarty
Team Cub
Team Cub
Posts: 8235
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: Cooling fan failure

Postby Bob McCarty » Mon Dec 15, 2014 8:39 pm

I can't find a decent photo, but it's a slotted, round head machine screw. It threads into a short stand pipe. You add oil with the fill hole up, then rotate it to the bottom to let any excess above the stand pipe drain out. There is no way to drain it for changing, the problem is when it runs out of oil.

Bob
"We don't need to think more,
we need to think differently."
-Albert Einstein

User avatar
Bill V in Md
10+ Years
10+ Years
Posts: 673
Joined: Sun Feb 02, 2003 6:51 pm
Zip Code: 21228
Tractors Owned: 1948 Farmall Cub
LT1045 Cub Cadet
Circle of Safety: Y
Location: MD, Catonsville

Re: Cooling fan failure

Postby Bill V in Md » Mon Dec 15, 2014 9:27 pm

quote="offrink"]Does anyone have a photo of what the fan's oil screw looks like? Do you ever have to drain the oil or just fill it.[/quote]
Here you go; Like Bob said, just a slotted round head machine screw.
Fan Oil Screw.JPG
[
Bill VanHooser
Circle of Safety

User avatar
Dale Finch
5+ Years
5+ Years
Posts: 2567
Joined: Tue Apr 27, 2010 11:34 am
Zip Code: 27517
Tractors Owned: '55 Cub "Bertha"
'55 Cub "Ben"
'55 Cub "Bailey"
'56 Cub "Boris"
'48 Super A "Bubba"
Circle of Safety: Y
Location: NC, Chapel Hill

Re: Cooling fan failure

Postby Dale Finch » Mon Dec 15, 2014 9:29 pm

Bob McCarty wrote: You add oil with the fill hole up, then rotate it to the bottom to let any excess above the stand pipe drain out

I may be wrong, but I believe you pump the oil into the hole while the screw is pointed to one side or the other. (I think the book says to the left) The only problem you would have if you did it while pointing up, is you would have more oil coming back out once you rotated the fan so the screw was at the bottom, draining off the excess.

staninlowerAL
5+ Years
5+ Years
Posts: 2668
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, '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"
Location: AL (Southwest)

Re: Cooling fan failure

Postby staninlowerAL » Mon Dec 15, 2014 9:30 pm

offrink wrote:Does anyone have a photo of what the fan's oil screw looks like? Do you ever have to drain the oil or just fill it.

Bob McCarty wrote:I can't find a decent photo, but it's a slotted, round head machine screw. It threads into a short stand pipe. You add oil with the fill hole up, then rotate it to the bottom to let any excess above the stand pipe drain out. There is no way to drain it for changing, the problem is when it runs out of oil.

Bob


Here's a little photoshop work of the picture in Offrink's post.
hub2.jpg

offrink
Cub Star!!
Cub Star!!
Posts: 336
Joined: Thu Jan 02, 2014 4:23 pm
Zip Code: 49316
Tractors Owned: 1954 farmall fcub, 1954 farmall super m
Location: Caledonia, MI

Re: Cooling fan failure

Postby offrink » Mon Dec 15, 2014 10:12 pm

Thanks for the photo! That helps a lot! I don't know the last decade mine was oiled! (To be fair I have only had it a year)

Scrivet
5+ Years
5+ Years
Posts: 2518
Joined: Sun Apr 19, 2009 9:51 pm
Zip Code: 63664
Location: MO, Potosi

Re: Cooling fan failure

Postby Scrivet » Tue Dec 16, 2014 8:22 am

John *.?-!.* cub owner wrote:.......... I have one that was so badly worn I cut a shim from a Diet Pepsi can and put in it. When I rebuilt it the second time about 25 years later I cut a new Diet Pepsi shim and also used Permatex Bearing Mount.
Was it from the SAME diet Pepsi can???? :lol:

User avatar
challenger
5+ Years
5+ Years
Posts: 1087
Joined: Sun Apr 18, 2010 6:22 am
Zip Code: 21742
Tractors Owned: 1955 F Cub (2)
1952 F Cub
1948 F Cub
2155 JD
216 JD
Circle of Safety: Y
Location: Hagerstown MD

Re: Cooling fan failure

Postby challenger » Tue Dec 16, 2014 9:01 am

I want to reinforce Artc's comment with regard to the need for zero play where the governor cross shaft fits into the hub located at the end of the short shaft that comes out of the governor body. This 'play' is a very common problem and greatly affects the responsiveness of the governor. If your tractor does not seem to respond promptly to a load being placed on the engine, check this shaft for play. As discussed, there are several ways to address the problem.

Scrivet
5+ Years
5+ Years
Posts: 2518
Joined: Sun Apr 19, 2009 9:51 pm
Zip Code: 63664
Location: MO, Potosi

Re: Cooling fan failure

Postby Scrivet » Tue Dec 16, 2014 10:20 pm

challenger wrote:........... As discussed, there are several ways to address the problem.
My preferred way to fix it is to point towards the governor rockshaft and say "Johnny, is that supposed to move like that????" as "John *.?-!.* cub owner" walks by. :wink: :D :lol:


  • Similar Topics
    Replies
    Views
    Last post

Return to “Farmall Cub”

Who is online

Users browsing this forum: Curtis and 10 guests