Ford 8n

[Anonymous-0]

I bought a 8n from a dealer that he had taken in on trade or brought at aution,and I knew that motor gets tight after running & has a knock in bottom end. From you Ford people what is most likey cause & how to fix.

 

[Bob]

For starter, does it have any oil pressure?

 

[Anonymous-0]

No it does not have any oil pressure. Assuming that the guage works.

 

[Bob]

DO NOT run the poor thing anymore without oil pressure!

ASSUMING there's oil in the crankcase, the oil pump may simply have lost it's prime, or it may have failed, OR the oil pickup tube MAY be cracked or broken off completely.

SADLY, the rod and main bearing are probably "toast" from lack of lube, and MAY have "spun". (Since you say it locks up.)

If a rod bearing(s) has spun, grinding the crank and replacing or reconditioning the rod(s) involved isn't TOO big of a deal. HOWEVER, if a main bearing has spun, the block may by RUINED, or at the very least need to be "line bored".

I don't know WHAT to tell you... if it's worth trying to prime the oil pump, and starting it again, or if that will just add mure runtime without oil, and cause even MORE damage.

I am making kind of a "drive-by" posting here, as I need to get back on the road. Surf over to the "N" Board, and post there, and/or search the archives there for HUNDREDS of postings telling how to prime the oil pump by removing the oil pressure regulating valve plug, the spring, and the valve, then squirting oil in the opening, which will drain down and prime the pump.

Also, you can remove the big engine oil drain plug and screen, then, looking up into the opening, the bottom end of the oil pickup tube should be dangling over the center of the hole. If you can get a finger up there, the tube should be reasonable solid, if the other end is still soldered tight to the oil pump.

<img src = "https://photos.yesterdaystractors.com/gallery/pieces/v1915.jpg">

GOOD LUCK... I'll check back later to see what you found out!

 

[Bob]

OOOPSSS...

Forgot the link:
Untitled URL Link

 

[RobMD]

Based upon this, you had better gotten this tractor cheap, because you're looking at $$ now that people have ran the dang thing everywhere without oil pressure.

 

[Anonymous-0]

If it's running tight, it's time to take it apart....Overhaul time.


Glenn F.