Oil leak on my AMC 360... cracked timing cover? - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 11-04-2002, 09:58 AM Thread Starter
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Oil leak on my AMC 360... cracked timing cover?

My 360 has been leaking a little oil, not too bad... like 1 qt every 1,500 miles. I figured that the timing cover or oil pan needed to be tightened.

This weekend I went elk hunting (no elk... which is typical) round trip was about 30 miles with the normal up and down at about 10 mph. I started with the dipstick full and on the way home noticed that my oil pressure gauge was dancing... I was two quarts low. I put it up on a buddy's rack and it appears to be coming from just above the oil pump. It also appears that lower alternator bracket is tight against the oil pump.

Could it be that the alternator bracket has pushed against the oil pump housing and caused the timing cover to crack?

Anyone have this experience with a problem like this before?

Many thanks in advance
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post #2 of (permalink) Old 11-04-2002, 11:24 AM
 
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Re: Oil leak on my AMC 360

I would first check out your oil pressure sending unit. It is located just above the oil pump also, and they are prone to leak. It is the round can looking thing with one wire coming out the top. The alternator braket is above the oil pump also, but if the bracket are that loose, you would probably have a belt chewed up and eaten and no juice from alternator. [img]images/graemlins/frown.gif[/img]
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post #3 of (permalink) Old 11-04-2002, 12:33 PM Thread Starter
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Re: Oil leak on my AMC 360

I guess I should have mentioned that we did look at the oil pressure sending unit, and it did not look like the oil was leaking from there. Also, we put a wrench on the lower alternator bracket and it was tight.

I'm going to power wash it tonight and we'll take another look at it.

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post #4 of (permalink) Old 11-04-2002, 02:46 PM
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Re: Oil leak on my AMC 360

Not to sound stoopid, but what's the thing that the oil filter and oil pressure sending unit screw into? That thing then bolts to the block. Anyway, mine appears to be leaking from the base of the "thing" where it bolts to the block.
post #5 of (permalink) Old 11-04-2002, 04:07 PM
 
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Re: Oil leak on my AMC 360

The sender goes into the block. The oil filter screws onto the oil pump housing which bolts onto the timing chain cover. The timing chain cover then bolts to the front of the block. The oil sender does not screw into the timing chain cover.
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post #6 of (permalink) Old 11-04-2002, 04:47 PM Thread Starter
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Re: Oil leak on my AMC 360

Well, I skipped out of work for a couple of hours and, in LEVE format:

1) power washed the engine, concentrating on the oil pump
2) ran it up on a hoist
3) move the alternator as far away from the timing cover as I could
4) cleaned the affected area with brake cleaner
5) blew it dry
6) ran the engine and inspected the suspect areas

What we found: Inconclusive, but it appears as though there is a small crack in the corner where the oil pump makes the bend into the rest of the timing cover.

Has anyone ever had their timing cover crack in that spot? If so, can it be welded?
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