Engine Problem Cub 154

IH CUB Lo-Boy Series - 154, 184, 185 Forum -- Questions and answers to all of your Lo-Boy 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.
jimc1000
Posts: 3
Joined: Sat Oct 21, 2017 8:32 am
Zip Code: 45244

Engine Problem Cub 154

Postby jimc1000 » Sat Oct 21, 2017 2:21 pm

I have my dad’s 1971 Cub 154 Lo-Boy that I’m trying to get back in to running shape. To my knowledge it has not been used in 5 or 6 years. My Dad always kept good care of it until he past away and then our family hired someone to use the tractor to mow his property for a couple of years. We are not sure how well the tractor was kept up during that time. We’ve changed the spark plugs, coil, distributor cap, rotor, condenser and points. We’ve cleaned the carburetor and made sure it has a good flow of fresh gas coming to the carburetor. The oil has been changed.

It cranks fine but the oil light comes on and after 40-60 seconds the engine slows down and stops, like its starting to freeze up. When I then turn the key the generator/starter attempts to turn but can’t because the crankshaft seems to be freezing up. The generator belt is good and tight. When belt is loosened the generator and water pump turn freely. The idler shaft at rear of engine can be turned with a wrench but it’s tight at first but then seems to free up and if we try to start the engine again it starts but after 40 seconds or so it slows down again and stops. The rear seal does leak some and I think there is some noise coming from back of the engine area.

I’m not a mechanic so I’m not sure what to do from here. So far I’ve been unable to find a tractor mechanic in Western North Carolina/Northeast Georgia to work on it. Any ideas about what the problem may be or people to work on it would be much appreciated.

Jim Becker
Team Cub
Team Cub
Posts: 13646
Joined: Sun Feb 02, 2003 2:59 pm
Zip Code: 55319
Circle of Safety: Y
Location: MN

Re: Engine Problem Cub 154

Postby Jim Becker » Sat Oct 21, 2017 3:09 pm

It may not be pumping any oil in the engine. Before you go any farther, prime the oil pump. Read the first half dozen posts in this thread to see how it is done:
http://www.farmallcub.com/phpBB2/viewtopic.php?f=1&t=98341

Eugene
Team Cub Mentor
Team Cub Mentor
Posts: 16973
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Re: Engine Problem Cub 154

Postby Eugene » Sat Oct 21, 2017 3:13 pm

Welcome.

Prime the oil pump. Search this site for photos and a how to. My guess is the oil pump is not pumping oil and the engine bearings are dry. Common problem for a long sitting Cub.

Allen plug (if you can remove it) on the left rear of the engine, just in front of the oil pump is the best place to prime the lubrication system. A 1/2 cup or two of engine oil is this location will fill the galleries and put oil into the bearings.

Prime the oil pump with 1/2 cup of engine oil. Rotate the engine by hand at least two full turns. Prime the oil pump again.

Oil light comes on during engine start up and will remain lit until the oil filter housing is filling up with engine oil.

The 154's engine is the same as the standard Cub. Plenty of information on this site concerning the engine and the 154.

No water pump with the C-60 engines, thermosyphon.

And I see Jim's post suggesting the same thing.
I have an excuse. CRS.

Jim Becker
Team Cub
Team Cub
Posts: 13646
Joined: Sun Feb 02, 2003 2:59 pm
Zip Code: 55319
Circle of Safety: Y
Location: MN

Re: Engine Problem Cub 154

Postby Jim Becker » Sat Oct 21, 2017 3:19 pm

Eugene, I had you by 4 minutes (this time).

Either the hole inside the oil filter housing as shown in the thread I pointed at, or the allen plug described in Eugene's post will work for priming it. You can use whichever one is more convenient for you.

Eugene
Team Cub Mentor
Team Cub Mentor
Posts: 16973
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Re: Engine Problem Cub 154

Postby Eugene » Sat Oct 21, 2017 3:25 pm

Jim Becker wrote:Eugene, I had you by 4 minutes (this time).
I gave you a head start.
I have an excuse. CRS.

jimc1000
Posts: 3
Joined: Sat Oct 21, 2017 8:32 am
Zip Code: 45244

Re: Engine Problem Cub 154

Postby jimc1000 » Sat Oct 21, 2017 7:10 pm

Thank you so much for the information. We were wondering about priming but had no idea how to do it. I'll give it a try and let you know.

staninlowerAL
5+ Years
5+ Years
Posts: 3471
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: Engine Problem Cub 154

Postby staninlowerAL » Sat Oct 21, 2017 7:33 pm

You can also add a couple of fittings and substitute an oil pressure gauge for the sending unit on the oil filter housing to see if the oil pump is producing pressure when the engine is running. It will need to be a low pressure gauge like a Cub engine (0-30 range).

Eugene
Team Cub Mentor
Team Cub Mentor
Posts: 16973
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Re: Engine Problem Cub 154

Postby Eugene » Sat Oct 21, 2017 8:59 pm

Rather than purchase a new oil pressure gauge - - remove the oil filter housing cover. You will probably do that during priming the lubrication system.

Prime the oil pump. Disconnect and ground the coil to distributor wire.

Crank the engine over while watching for oil flowing into the oil filter housing from the same priming hole. Once oil is flowing, replace oil filter cover, good to go.
I have an excuse. CRS.

jimc1000
Posts: 3
Joined: Sat Oct 21, 2017 8:32 am
Zip Code: 45244

Re: Engine Problem Cub 154

Postby jimc1000 » Wed Oct 25, 2017 10:31 am

Thanks so much for everyone's ideas. I followed your instructions for priming the oil pump and it worked great. She cranked right up and seems to run fine. The oil gauge shows the pressure is okay. Again, Thanks for your help.


  • Similar Topics
    Replies
    Views
    Last post

Return to “Lo-Boy Series - 154, 184, 185”

Who is online

Users browsing this forum: No registered users and 2 guests