Loss of oil pressure?

[cardana24]

Sounds like Cherokees use a 2WD pan. Fair enough.

DONT measure from the pump body. Put a straight edge across the pump screen and measure to the oil pan rail to measure pickup depth

Put a straight edge across the oil pan gasket surface and measure to the bottom of the sump to find the pan depth.

The crushed thickness of the gasket is 1/8" so don't forget to add that. Set your initial clearance at 3/16~1/4" and when the gasket is in the picture you should have perfect clearance.

Torque that bolt to spec and use thread locker. There is no gasket but I used anaerobic sealer to seal the pump to the main cap. It is not necessary but I figured I would do it anyway.

I used the stock 3.4 camaro oil pan, so yes it is a 2wd pan. The jeep oil pan is deeper.

I'll post a picture of how I have the pick up welded to the pump.

I will defiently use loctite this time around on the bolt holding it in. With the off road driving and the knobby tires, it is almost vibrating the whole time I drive it.

What is anaerobic sealer? RTV?

[pocket-rocket]

I used the stock 3.4 camaro oil pan, so yes it is a 2wd pan. The jeep oil pan is deeper.

I'll post a picture of how I have the pick up welded to the pump.

I will defiently use loctite this time around on the bolt holding it in. With the off road driving and the knobby tires, it is almost vibrating the whole time I drive it.

What is anaerobic sealer? RTV?

It's not the same as RTV.

Anaerobic Sealer
Anaerobic gasket eliminator hardens in the absence of air. This type of sealer is used
where two rigid parts (such as castings) are assembled together. When two rigid
parts are disassembled, and no sealer or gasket is readily noticeable, the parts were
probably assembled using a gasket eliminator.

http://www.jasperengines.com/pdf/RTVAnaerobicSealerTB.pdf

[cardana24]

okay I did not use an anerobic sealer, but I did get my pick up welded on this evening.
I put everything back together and filled the engine with oil. Once the jeep caught the oil pressure went up to 75 psi!! I was very happy to see this. I turned it off and tried one more time and the same results. I turned it off after I saw this. I am going to wait until tomorrow to let the jeep warm up to see what it does because I want the loctite on the oil pump bolt to have a good chance to set up. I'll report back with my findings but so far so good. Also when I put the oil pump back in it measured at ~7" from the top of the pan. Yesterday when I was measuring the oil pan I was finding that it was 7 1/8 - 7 1/4 deep with out the gasket, so I should be good to go on that. Here a few pics.

[geoffinbc]

Looking good. Sucks to do it twice hey?



I made sure to do mine to avoid any problems. Even removing the pickup from the stock pump was not hard. I just moved it back and forth with my hands and it popped out.

[cardana24]

Looking good. Sucks to do it twice hey?



I made sure to do mine to avoid any problems. Even removing the pickup from the stock pump was not hard. I just moved it back and forth with my hands and it popped out.

yeah it sucks to do it twice, but I am happy I figured out what it was. I am driving the jeep today and I have not seen below 40 psi on my gauge even when the engine is warm and idling. I have seen between 80-40 psi all day. I am happy with that.

I have taken this thing apart so many times it really does not take too long, it's just the point of doing it over and over again, and having to drain the oil every time. Putting everything back together last night took me about 2 hours. Most of that time was spent trying to get the gasket to stay on the oil pan while I was lining it up to the block. Also taking your oil level sensor out saves some headaches, since the pick up hits it when trying to put the pan back on.

The only thing that really bothers me is that when I have the engine hoist supporting the engine when I am pulling the pan, I cannot use my creeper from the front of the jeep I have to go in from the side and there is less room on the sides of the garage