oil pan removal

[Duramax88]

Not sure, that is what I am thinking. From what I am understanding it is on the front of the block under the harmonic balancer as shown in one of the pics/ If I am wrong please let me know. There is nothing inside the block to represent an oil pump unless I am missing something.

 

[Bob Rooks]

This is the only other type of oil pump installation that I'm aware of, and both are inside the block.

 

[Bob Rooks]

Not sure, that is what I am thinking. From what I am understanding it is on the front of the block under the harmonic balancer as shown in one of the pics/ If I am wrong please let me know. There is nothing inside the block to represent an oil pump unless I am missing something.

You are probably right Max, but I haven't seen that type of installation before now.

 

[Bob Rooks]

 

[Duramax88]

Ok talked to Thomas at affordable tractor and he says that the oil pump is internal and that the only screen I have is the one in the sump and that the only pressure relief valve is in the oil filter housing. The picture of what I thought was the oil pump under the harmonic balancer is actually part of the timing cover. So with that being said I am going to put it back together and if I cant get any pressure I am going to find a diesel mechanic to look at it.

 

[Bob Rooks]

Here is a pic of the oil pump and gasket. Because of the cast in oil passages I think I can say now with a degree of certainty that your oil pump is inside the timing gear cover or just behind #1 main bearing cap. It is driven from the crankshaft gear.

 

[Texan4Life]

Ok talked to Thomas at affordable tractor and he says that the oil pump is internal and that the only screen I have is the one in the sump and that the only pressure relief valve is in the oil filter housing. The picture of what I thought was the oil pump under the harmonic balancer is actually part of the timing cover. So with that being said I am going to put it back together and if I cant get any pressure I am going to find a diesel mechanic to look at it.

Thanks for posting the extra pics. Let us know how it goes!

 

[Duramax88]

Okay Bob thank you very much for your help. I have stated that I am no mechanic but have common sense. With that being said and your pics I now have some more questions about the oil pressure situation on my tractor. Correct me if I am wrong but with a gear driven pump is it safe to say that it either works or doesn't work, there is no in between? What I am asking is can the pump be working but not pumping to full potential thus creating low pressure? I cannot find any blockage in the oil passages is there something else I could be missing? I am going to try to adjust the pressure relief system in the oil filter housing to see if that helps. Should I try adjusting it further in or go the other way to loosen up the spring inside? Once again Bob and others for your help. By the time I get finished with this project I should be a lot more knowledgeable about the oil workings of my motor. One other thing I forgot to mention in all this is that I had the engine rebuilt a couple of years ago and have not used the tractor since other than to start it up occasionally to move it to mow the yard or let it run to keep things lubricated and keep the battery charged. Just thought I should mention this.

 

[Affordable]

If you are getting oil out where the oil sender hooks up ,what about to the top of the engine at the rockers ?, I would also look at the oil pressure regulator where the Oil filter screws on, the adjustment is under the acorn nut,I have also seen the gasket under the oil filter housing on backwards and block the oil pressure, I have not seen a lot of failures in the TY395 Oil pumps

Tommy
Affordable Tractor Sales
"Your Jinma Parts Superstore"
Home of compact Jinma, Foton, and Koyker Tractors and Parts, Wood Chippers, Backhoes - Affordable Tractor Sales Company

 

[Affordable]

That makes me think the gasket on the oil filter housing may have been put on backwards ????( Rebuilt a few years ago ) Only a few bolts to check it out

Tommy
Affordable Tractor Sales

 

[Bob Rooks]

Yes, the pumps can have reduced output due to wear on the sides of the rotor, and as mentioned in my previous post. Do you know if a new pump was installed during the rebuild? I see the possibility of the filter head gasket being installed backwards but I don't see how it would affect oil pressure, just the relief dump?

 

[Duramax88]

Ok Thanks Tommy I will check that out. I am waiting on some parts from you then I will check out the adjustment under the acorn nut. I am getting a little oil at the rockers but not much. I will also check out the gasket on the oil filter housing. How much oil should I be getting at the rockers? The rebuild was done by a diesel mechanic that works in a diesel repair shop, they normally work on diesel trucks although that shouldn't make a difference. what way should the regulator be on the oil filter housing? Mostly in or mostly out to start the pressure check

 

[Duramax88]

I thought I bought a new oil pump to be installed in the rebuild but not totally sure. I am looking to see if I can find the receipts from the rebuild.

 

[Bob Rooks]

I am waiting on some parts from you then I will check out the adjustment under the acorn nut. I am getting a little oil at the rockers but not much. How much oil should I be getting at the rockers?
You won't get a lot of oil because there is a brass restrictor orifice under the first rocker shaft pedestal. If that restrictor is missing it could be a cause of lower than normal oil pressure.

I will also check out the gasket on the oil filter housing. The rebuild was done by a diesel mechanic that works in a diesel repair shop, they normally work on diesel trucks although that shouldn't make a difference.
It could make a lot of difference simply because of the design differences between engine manufacturers. Take me for instance, I'm factory certified for all Caterpillar and EMD engines, plus hold a federal diesel marine engineer's unlimited license, but my Chinese engine experience is limited to my own tractor.

What way should the regulator be on the oil filter housing? Mostly in or mostly out to start the pressure check?
Screwing it in will (should) raise the pressure. Screwing it out lowers the pressure. One can only hope the cause for low to no oil pressure is not from improperly installed bearings.

Addendum: If adjusting the regulator on the filter head has little or no effect on the oil pressure then we are back to the pump, bearings, restrictor orifice, or gaskets.

 

[Duramax88]

Ok I am back. Made sure the gasket on the oil filter housing was on correctly. Put Rotella 15W - 40 in the engine and filled to the top. Screwed the oil regulator all the way in. Put a mechanical gauge on and still no pressure reading on the gauge. Getting oil to the top of the engine. I let the engine run for an hour and even drove it around the yard for awhile. Engine runs fine, no odd noises or smoke coming out the muffler. I am totally frustrated and don't know where to go next other than a couple of sticks of dynamite or making a yard ornament.

 

[Bob Rooks]

It's a longshot, but try backing the regulator all the way out. Aside from removing the sending unit/mechanical gauge from the port and cranking the engine over to purge the port, I'm out of ideas

 

[Duramax88]

Ok thanks I will try that

 

[Duramax88]

Hi Bob, did both. Backed the regulator out all the way and removed the sending unit and ran the engine briefly. No go. still no pressure reading on the mechanical gauge.

 

[Bob Rooks]

Hi Bob, did both. Backed the regulator out all the way and removed the sending unit and ran the engine briefly. No go. still no pressure reading on the mechanical gauge.

But you did get oil from the port without the gauge installed, no?

 

[Duramax88]

Yes got a good flow. I am going to see if I can make a short video showing the oil flow coming out of the port and post it.