D14 rebuilt engine oil pressure

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   I installed a rebuilt engine in this tractor that we bought at a machine shop. The previous owner never returned to pay for it or couldn't afford it. It sat there for years so we got it cheap. I installed it in the tractor and got it running. I had roughly 15 psi oil pressure but realized I wasn't getting oil to the top end. Traced it back and found no oil coming out of the port in the side of the block. Later found out that the middle cam bearing was not installed correctly or even the right one. So we pulled the engine back out and got it to a guy that's built many engines. He tore it down and sent it to the machine shop to get the correct cam bearings installed and I think it got new rods bearings as well. So I now got the engine back from him and installed it in the tractor again. I now have oil going to the top end. But I have 5-7 psi oil pressure. I have not ran it much because of the low oil psi. I talked to the guy that put the engine together and he's thinking oil pump. Are the oil pumps common to wear out or have broken parts? Can it be installed incorrectly? I have oil coming into the filter tube. It seems to be moving oil just not much psi. Anyone have any ideas. 

	This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
	The Forum	Parts and Services	Unofficial Allis Store	Tractor Shows	Serial Numbers	History

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
Chilson450 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 03 Mar 2020 Location: Michigan Points: 11	Post Options Post Reply Quote Chilson450 Report Post Thanks(0) Quote Reply Topic: D14 rebuilt engine oil pressure Posted: 10 hours 4 minutes ago at 5:48pm
	I installed a rebuilt engine in this tractor that we bought at a machine shop. The previous owner never returned to pay for it or couldn't afford it. It sat there for years so we got it cheap. I installed it in the tractor and got it running. I had roughly 15 psi oil pressure but realized I wasn't getting oil to the top end. Traced it back and found no oil coming out of the port in the side of the block. Later found out that the middle cam bearing was not installed correctly or even the right one. So we pulled the engine back out and got it to a guy that's built many engines. He tore it down and sent it to the machine shop to get the correct cam bearings installed and I think it got new rods bearings as well. So I now got the engine back from him and installed it in the tractor again. I now have oil going to the top end. But I have 5-7 psi oil pressure. I have not ran it much because of the low oil psi. I talked to the guy that put the engine together and he's thinking oil pump. Are the oil pumps common to wear out or have broken parts? Can it be installed incorrectly? I have oil coming into the filter tube. It seems to be moving oil just not much psi. Anyone have any ideas.

Sponsored Links

steve(ill) Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 11 Sep 2009 Location: illinois Points: 85960	Post Options Post Reply Quote steve(ill) Report Post Thanks(0) Quote Reply Posted: 9 hours 52 minutes ago at 6:00pm
	I assume you have the BYPASS FILTER SYSTEM on this engine ? ... The filter is STUFFED WITH COTTON and has a mason jar type thread not an automotive center mount thread ? The pump output goes to the FILTER and up thru a 1/4 inch center tube with a 1/8 inch hole in the top of it... About 15% of that oil goes thru that hole and thru the filter and dumped back to SUMP ( bupass system).... The OTHER 85% of the oil from the pump runs down thru the cam shaft and is spray lube thru holes to the pistons / connecting rods, and lubes the main bearings ..... this does NOT GO THRU THE FILTER. Make sure you got the right filter , the center tube, and the 1/8 inch hole in the top of the tube, or you will LOOSE a lot of the oil and be dumping back to sump.... and LOW PRESSURE....... The PRESSURE you see is BACK PRESSURE caused by the filter and the 1/4 inch tube with the 1/8 inch hole..
	Like them all, but love the "B"s.

Chilson450 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 03 Mar 2020 Location: Michigan Points: 11	Post Options Post Reply Quote Chilson450 Report Post Thanks(0) Quote Reply Posted: 9 hours 29 minutes ago at 6:23pm
	Yes it does have the bypass style filter. I have a brand new center tube installed. I've tried a couple different filters.

HudCo Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 29 Jan 2013 Location: Plymouth Utah Points: 3812	Post Options Post Reply Quote HudCo Report Post Thanks(0) Quote Reply Posted: 8 hours 11 minutes ago at 7:41pm
	are you checking this with a gauge in the right range ? like a lower pressure gauge, like a 0 to 20 0r 30 ? not a 0 to 60 or 80

Chilson450 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 03 Mar 2020 Location: Michigan Points: 11	Post Options Post Reply Quote Chilson450 Report Post Thanks(0) Quote Reply Posted: 8 hours 7 minutes ago at 7:45pm
	Yes I have multiple 30 psi gauges I have checked with. The tractor itself has a 0-80 psi gauge but I disconnected that and screwed the 30 psi gauge right into the filter base.

DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 21437	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 7 hours 46 minutes ago at 8:06pm
	The oil filter absolutely must be a cotton string filter. NOT a pleated paper filter. I always replace the two vanes and their springs inside the oil pump making sure the vanes are installed the right way. Installed backwards would probably cause low oil pressure. I inspect the rotor for wear and the inside of the pump's housing for wear too.

steve(ill) Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 11 Sep 2009 Location: illinois Points: 85960	Post Options Post Reply Quote steve(ill) Report Post Thanks(0) Quote Reply Posted: 7 hours 27 minutes ago at 8:25pm
	On the B-C engine, the hollow cam shaft has a restrictor plug at the front to keep the oil from dumping into the front housing on the gears.... Does the D14 engine have that same restrictor ? .......... Does YOUR engine have the restrictor in the cam ? ITEM #10 - 11 ... Edited by steve(ill) - 7 hours 24 minutes ago at 8:28pm
	Like them all, but love the "B"s.

Les Kerf Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 08 May 2020 Location: Idaho Points: 1107	Post Options Post Reply Quote Les Kerf Report Post Thanks(0) Quote Reply Posted: 3 hours 46 minutes ago at 12:06am
	As a test you could temporarily block all of the oil going to the filter.