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Ford 640 - bad oil leak
Which plate are you referring to? https://photos.app.goo.gl/Dxk2zqhY7uLPfd1r8 -
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Ford 640 - bad oil leak
If there are any videos I can take that would help, I am glad to try. At this point I am feeling like it's a rear main seal. I band-aided the leak in the starter side with some black rtv and that helped but of course now it's coming from the other side even more and will pool up in the housing... -
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Ford 640 - bad oil leak
The highest place I see oil leaking currently is both sides of the housing - side of the starter where it mounts to the housing on the left side, and the opposite behind the hydraulic (?) pump on the right side. After redoing the oil pan gasket with a new one and torque to 18ft lbs, I don't see... -
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Ford 640 - bad oil leak
Understood. I took the starter off yesterday and used a light to look in there. There was some engine oil on the bottom. Maybe... 1/8 and an inch or less? I took pics but they don't really show anything. I saw some oil on the flywheel. I also noticed some on the opposite side of the bell... -
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Ford 640 - bad oil leak
Apologies... The drain hole with cotter pin on the bottom of the bell housing is there. It was a little stiff at first but appears to be moving around mostly freely. I'm not sure how freely it's supposed to move but I don't really see any oil dripping from that area. I can try to spray some... -
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Ford 640 - bad oil leak
Oh and the push rod cover bolts (not sure what else to call if it's not that) were fairly loose so that could have been causing some of the leaks on that side. The cork gasket under it was still intact. -
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Ford 640 - bad oil leak
An update: I spent some of the weekend removing the valve cover, the push rod cover, the oil pan, replacing the oil pan gasket, cleaning up some oil sludge, I sprayed carb cleaner in all oil drain/passages I could find and all appeared to drain fine. There was some pooled oil in the valve area... -
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Ford 640 - bad oil leak
Thanks! I've been working on a flathead 8n also lately, and learning the differences. Definitely appreciate the understanding there. -
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Ford 640 - bad oil leak
I looked at it again briefly without running it, and I see where oil could potentially be pooling inside the valve adjustment cover area because I see fresher oil under/above the valve adjustment covers, but I don't see any evidence higher up. I am going to take those off and the valve cover on... -
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Ford 640 - bad oil leak
Thanks for that info. I've actually had the valve cover off before to replace the fuel shut off. But the oil leak was the same prior to removing the valve cover. I've had the valve cover (up top) and the valve adjustment cover(s) off of a different Ford tractor to replace the fuel shut off. I'm... -
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Ford 640 - bad oil leak
Would adding some Seafoam or similar to the oil help clean this up or am I looking at removing the valve cover, or more? -
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Ford 640 - bad oil leak
That's an interesting thought, because when I first start the tractor I see oil Pressure for a bit on the gauge. But as I use it, it drops to zero. That may not be related, but thought I'd note it. I'll look again. -
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Ford 640 - bad oil leak
I haven't really used it much other than starting it up to run every month or so, and I added about a quart of fresh oil just before using it today. It was a little over full mark when I started using it to finish mow. By the time I got done, I let it sit, off, for maybe 30min while I ate supper... -
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Ford 640 - bad oil leak
Yes. Pretty bad. It lost a quart from maybe 45min or so of finish mowing. Around 1800 RPM I think. The videos should show where it's leaking. On one side it is just behind the starter. Similar on the other side.
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