HELP !!NO OIL PRESSURE IN A 1948 CUB

Thu May 09, 2013 8:10 pm

Tractor Has been restored Parked it about a year ago was running fine at the time . I cleaned out the fuel tank , carburetor put a new battery in it started it up but the oil pressure gauge says no oil pressure. un screwed oil pressure gauge and no oil came out of when I started it again , but the oil pan is full What could be wrong ????

Re: HELP !!NO OIL PRESSURE IN A 1948 CUB

Thu May 09, 2013 8:26 pm

Your oil pump has lost its prime. Check this thread for procedure/discussion of that problem.
http://www.farmallcub.com/phpBB2/viewtopic.php?f=1&t=77204

Re: HELP !!NO OIL PRESSURE IN A 1948 CUB

Thu May 09, 2013 8:45 pm

I still wonder why this happens to some cubs. I have had a dozen or so running cubs. Some bought that had been sitting for a few years to the most of one sitting 12 years. Do the basics, clean carb, new plug, points, ect and all have started up and had oil pressure. I just wonder why some will lose the prime?

Re: HELP !!NO OIL PRESSURE IN A 1948 CUB

Thu May 09, 2013 9:41 pm

Ditto to what Jim said. There are lots of resources available to our members, suggest you follow the links below:

Image to Farmallcub.com :big smile: Forum Family. And you have come to the right place for all things Cub related. If you click on the Site Rules, Regulations, & Important Information, it will point you to :arrow: the Welcome Wagon wherein you will find links to many useful sites and topics. One of which is the Cub Manual Server. Enjoy!.

Re: HELP !!NO OIL PRESSURE IN A 1948 CUB

Thu May 09, 2013 10:50 pm

double check your level, my dipstick is bent like a leaf spring and reads wrong if poked in upside down. it will show level when there is only a trace of oil in my cub and can be misleading.

Re: HELP !!NO OIL PRESSURE IN A 1948 CUB

Fri May 10, 2013 11:48 am

Chris D wrote:I still wonder why this happens to some cubs.


I suspect that this will forever remain a mystery, like the two holes in the floor plate. When I rebuilt my engine, I didn't know enough to prime the pump, but I got oil pressure anyway. Then, for some unknown reason, my cub lost prime two weeks running last summer (I was using her at least once a week to mow). However, I haven't had a problem since, even during the winter, when she may go a month or more between snowstorms. Go figure.

Re: HELP !!NO OIL PRESSURE IN A 1948 CUB

Fri May 10, 2013 8:46 pm

Thank you Jim Becker I did what you said and it started right up . And thanks to everyone else for all the comments they helped alot .

Re: HELP !!NO OIL PRESSURE IN A 1948 CUB

Sun May 12, 2013 9:18 am

Welcome from another show me resident. You're only a couple hours drive from Cuba-rama in September and even closer to a few minifests. Glad the oil pressure issue got resolved, do keep an eye on the oil pressure gauge EVERY time you start it.

Re: HELP !!NO OIL PRESSURE IN A 1948 CUB

Sun May 12, 2013 10:29 am

A Cub fest will be held in California, Missouri, May 18, 2013. You are about 1 hours drive from California, Mo.

Very knowledgeable Cub folks will be there. Link to the Cub fest follows.

viewtopic.php?f=8&t=77721

Re: HELP !!NO OIL PRESSURE IN A 1948 CUB

Tue Jul 23, 2013 7:44 pm

I had my '48 Cub sitting for a couple of years. When I started it this year, it was really knocking and pressure gauge was not registering pressure. I double checked with another gauge and found zero pressure. I had changed the oil and filter already. I started checking this site for answers and found this thread. I just am posting here to thank you for being so helpful to us folk. I have a repair manual...but it didn't tell me about priming. I found the priming plug, removed the oil lines from in front of it so that I could get the plug out without wrecking it. Primed up the pump and started it up and within 15 seconds had 30 psi. You folks really saved me. :worthy:

Re: HELP !!NO OIL PRESSURE IN A 1948 CUB

Tue Jul 23, 2013 8:31 pm

G'day to you and glad you were able to solve your issues through a little research on the forums. I guess you already have a good idea of the resources we have available to our members. There are more .. suggest following the links below :

Image to Farmallcub.com :big smile: Forum Family. And you have come to the right place for all things Cub related. If you click on the Site Rules, Regulations, & Important Information, it will point you to :arrow: the Welcome Wagon wherein you will find links to many useful sites and topics. One of the most important resources are Owner's Manuals, Parts Catalogs and Service Manuals. The Cub Manual Server is the home of the jpg versions and the PDF Manuals -- well the pdf's of course :wink: Enjoy!.


Do enjoy your Cub and remember Image