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Post by towhook on Mar 13, 2020 10:17:56 GMT -5
Before you install the new pump with the replacement gear, find some bolts to go through the oil pump mounting holes while it's off the engine and tighten them as if you had installed it into the block. Make sure it turns by hand when tight. There has been some new Melling oil pumps that are locked up tight when tightened. They have sheared teeth off the cam due to this. Your replacement gear may be hanging up where the old pin went through the shaft hole used to affix the gear to the shaft. If it has burrs or swelling etc. there it would stop the gear from tapping on. Make sure you use a roll pin that won't get loose.
I did make sure it would turn by hand, I had to unseal it twice because of that. I used to motor oil from my hand pump can on the pump shaft, and the new gear went on smooth, took 2 trys to get the pin lined up, and had to rebur the pin after it was tapped in.it's nice an flush now. the pump shaft got a tad out of shape as well, and flat chissle opened up were the dist would slide in to it. so it had a good fit when I was done.
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Post by towhook on Mar 13, 2020 10:38:48 GMT -5
got some great info here, pics are the best. lol www.willysmjeeps.com/v2/modules.php?name=Forums&file=viewtopic&t=11551i'd say I have all my oil plugs are in, can't verify the front ( num 1 ) under the timing cover or the 2 down by the oil pump pick up numbers 7 and 8. I can pull the pan later to check those. plugs 2-5 are in, and #6 must be in for I don't have any oil coming out the bell housing. any thoughts, am I head the right direction ? |
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Post by towhook on Mar 13, 2020 13:42:08 GMT -5
I took the oil pan down, oil plugs num 6 and 8 are in there. now what  |
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Post by Scoutpilot on Mar 13, 2020 13:47:23 GMT -5
Is everything back together?
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oilleaker1
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Post by oilleaker1 on Mar 13, 2020 15:57:06 GMT -5
If your pump is full of oil, side gallery full of oil, oil float screen is clean and the oil pan has 4 quarts in it, Plugs out, you should see oil pressure on your extra gauge spinning the engine over with the starter as soon as the oil system has pumped itself full. If the front spray nozzle is not installed, it will never pump up to pressure. Is your oil filter stock Jeep or a spin on? If it's a aftermarket spin on, you must have the correct oil filter that has a spring loaded seat with small orifices or it will also act like a open gallery plug. Hence no oil pressure either. The stock oil filter has a stand pipe the filter cartridge slides down on and on the side of the pipe is a .070 small hole. This limits the oil leaving the filter canister and makes the system back up and produce pressure. Same thing goes for the spray nozzle under the timing cover. You could simply put a plug in the side gallery where the oil filter hose hooks up if you have the wrong filter. John
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Post by towhook on Mar 17, 2020 9:12:40 GMT -5
Is everything back together? no, pan is still off, side cover off etc. |
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Post by Scoutpilot on Mar 17, 2020 9:18:07 GMT -5
Okay.
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Post by towhook on Mar 17, 2020 9:27:42 GMT -5
If your pump is full of oil, side gallery full of oil, oil float screen is clean and the oil pan has 4 quarts in it, Plugs out, you should see oil pressure on your extra gauge spinning the engine over with the starter as soon as the oil system has pumped itself full. If the front spray nozzle is not installed, it will never pump up to pressure. Is your oil filter stock Jeep or a spin on? If it's a aftermarket spin on, you must have the correct oil filter that has a spring loaded seat with small orifices or it will also act like a open gallery plug. Hence no oil pressure either. The stock oil filter has a stand pipe the filter cartridge slides down on and on the side of the pipe is a .070 small hole. This limits the oil leaving the filter canister and makes the system back up and produce pressure. Same thing goes for the spray nozzle under the timing cover. You could simply put a plug in the side gallery where the oil filter hose hooks up if you have the wrong filter. John yes, pump should have oil in, after having it in a bucket of oil and spinning it. even put some oil over the pump gear through the side cover hoping some would go down the shaft. yes plugs are out
pick up screen is clean, pan is on the full mark with oil
front spray nozzle is there
oil filter is old school style fram , with the 5/8s bolt that holds it down , I used the same filter (new ) as to what I had before ( has the brass litting that goes down to the timing cover if I recall ) I'd say that I have the rite filter, got it from Kaiser willys.
should I fill the filter with oil ? when I go to prime it next time. I don't recall it being full when I checked it after I cranked it a few times.
thoughts ??
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Post by towhook on Mar 17, 2020 9:30:35 GMT -5
i'm goin to clean up the oil pump on the spare engine, and maybe pull the timing cover on that spare engine, and see how far down the front oil plug is, I have a felling i'd have to remove the cam, and the valve train |
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oilleaker1
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Post by oilleaker1 on Mar 17, 2020 10:36:20 GMT -5
It wouldn't hurt to fill the canister around the oil filter up. It would help reach a pumped up system sooner. Sounds like you are ready to try again with the starter. Mine would go up to around 10-15 lbs of pressure with the starter when it pumped up.
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Post by towhook on Mar 18, 2020 8:57:22 GMT -5
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Post by towhook on Mar 18, 2020 9:25:03 GMT -5
 my oil sprayer is in there  |
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Post by towhook on Mar 18, 2020 9:28:14 GMT -5
 this is the plug i'm wandering about |
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oilleaker1
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Post by oilleaker1 on Mar 18, 2020 15:01:20 GMT -5
The sprayer goes in that hole, not a plug. Was the above picture of the sprayer yours? The gallery plug should have been installed before the motor plate, cam gear, etc. was installed. Machine shop do that?
The pump has little to go wrong if the gears are all fine and the relief valve is in with it's spring and seated. You can re-use the old one if it checks out per shop manual inspection.
Filter looks fine.
So, are you ready?
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Post by towhook on Mar 19, 2020 10:34:32 GMT -5
The sprayer goes in that hole, not a plug. Was the above picture of the sprayer yours? The gallery plug should have been installed before the motor plate, cam gear, etc. was installed. Machine shop do that? The pump has little to go wrong if the gears are all fine and the relief valve is in with it's spring and seated. You can re-use the old one if it checks out per shop manual inspection. Filter looks fine. So, are you ready? yes, that pic is mine, wife took it as I was assbing the engine. the machine shop just put in the cam/ crank / pistons/ bearings ( aka just the bottom end ) I was just taking to a guy who said pull the gear off and run the pump with a drill. i'm goin to put in my spare pump ( that I stole the gear off of to replace the one that broke ) so i'm gonna swap the whole pump. and see what happens. gotta get a screw driver long enough to make it down in there.and I ready for ? a stroke if it doesn't work or put it for sale ? lol |
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