Brenton Mitchell
New User
No oil pressure,Rebuilt engine.new oil pump.new oil pump port block.check valve looks to be good. someone tell me whats going on.
- Thread starter Brenton Mitchell
- Start date
Nikolas Britton
Member
You put the drain plug and filter back on?
Anonymous-0
Well-known Member
Could the gauge or the plumbing to it be failing?
onefarmer
Well-known Member
- Location
- 6735 S Lowell Rd, St Johns, Mi 48879
Did you prime the pump?
What model tractor and what engine?
Is the suction tube leaking? Sometimes an o-ring gets worn or torn or the pick up tube has a crack and the pump can"t prime because of an air leak.
Is the relief valve set properly? Usually the simple ones are shimmed to increase the spring tension. If the relief valve stays open because the valve is stuck or is improperly set, you won"t develop oil pressure.
Is the suction tube leaking? Sometimes an o-ring gets worn or torn or the pick up tube has a crack and the pump can"t prime because of an air leak.
Is the relief valve set properly? Usually the simple ones are shimmed to increase the spring tension. If the relief valve stays open because the valve is stuck or is improperly set, you won"t develop oil pressure.
Your pevious post 5th July:Rebuilt engine, It had a rod bearing that turned. I had to replace the crankshaft,Now I cannot get the engine to oil,what i dont know is wheather or not the oil pump failure was the cause of the the rod bearing turn, it was a little low of oil. the pump looks good, can anyone tell me a litle bit about the rotery oil pump.
That and this post make me uneasy at diagnosing anything.
First question would be : are the bearings the correct size for the crank. Second might be : do you have any oil flow (as opposed to pressure).
Others might be as the rest of the posters.
I would advise getting an engine shop or engineer to check it out before you destroy what you have left.
RAB
That and this post make me uneasy at diagnosing anything.
First question would be : are the bearings the correct size for the crank. Second might be : do you have any oil flow (as opposed to pressure).
Others might be as the rest of the posters.
I would advise getting an engine shop or engineer to check it out before you destroy what you have left.
RAB
You should pull the pump and set it in a clean container of oil and rotate the drive gear on the pump by hand to see if its pumping oil, this will prime the pump too. Did you have the engine block dipped and all oil passages
cleaned and blown out with compressed air? I would pump engine oil into the oil gallery using an electric fuel pump and check the rocker arms for any oil could have blockage from sludge or dirt if you don't see any oil. Hal
cleaned and blown out with compressed air? I would pump engine oil into the oil gallery using an electric fuel pump and check the rocker arms for any oil could have blockage from sludge or dirt if you don't see any oil. Hal
Paul from MI
Well-known Member
I always fill the oiling system on a newly overhauled engine either one of two ways:
Remove spark plugs and crank engine until oil pressure shows. If the oil pump is run by the distributor you can make a simple adapter and run the pump with a small electric drill without turning the engine over.
I also have a container made out of an old freon tank with an air pressure fitting on top and a valve and 1/8" npt hose/fitting on the bottom. I hook the hose to the gage port on the engine. Put aboout 2-3 qts. of oil in it and pressurize to 20 psi. Open the valve and it will fill all the oil galleries and prime the pump.
Basic idea is have oil pressure immediately when the engine starts. Since you aren't showing pressure, don't run the engine at all until you figure out why.
Remove spark plugs and crank engine until oil pressure shows. If the oil pump is run by the distributor you can make a simple adapter and run the pump with a small electric drill without turning the engine over.
I also have a container made out of an old freon tank with an air pressure fitting on top and a valve and 1/8" npt hose/fitting on the bottom. I hook the hose to the gage port on the engine. Put aboout 2-3 qts. of oil in it and pressurize to 20 psi. Open the valve and it will fill all the oil galleries and prime the pump.
Basic idea is have oil pressure immediately when the engine starts. Since you aren't showing pressure, don't run the engine at all until you figure out why.
Went thru this about a year ago.
The Shop that did some of the engine rebuild left out a oil galley plug under the timimg cover.
Added the plug and the system pressurized as it should.
Just make sure that if you add a plug your sure your missing one-Fortunatly my IH parts books showed me where I was supposed to have one.
There have been several excellent solutions already offered in this topic.I would make sure you are on top of them first,then if no success look for the missing plug
GOOD LUCK
Randy In Iowa
The Shop that did some of the engine rebuild left out a oil galley plug under the timimg cover.
Added the plug and the system pressurized as it should.
Just make sure that if you add a plug your sure your missing one-Fortunatly my IH parts books showed me where I was supposed to have one.
There have been several excellent solutions already offered in this topic.I would make sure you are on top of them first,then if no success look for the missing plug
GOOD LUCK
Randy In Iowa
Anonymous-0
Well-known Member
No you get to find out what wrecked that bearing. It probably didn't die on its own, but from lack of oil.
Every component in the lube system is suspect. And if its a vintage Allis, some makers have filters that cause total loss of oil pressure.
Gerald J.
Every component in the lube system is suspect. And if its a vintage Allis, some makers have filters that cause total loss of oil pressure.
Gerald J.
Anonymous-0
Well-known Member
Did you take the oil line loose at the gauge to see if oil is getting there? If you think the guage could be bad, you could screw a pressure gauge in at the block.
Mark Klemm
New User
How do you Prime the pump?
I have a 1948 Farmall Cub
I am really new at this
Any assistance would really be appreciated
Mark
I have a 1948 Farmall Cub
I am really new at this
Any assistance would really be appreciated
Mark
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