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Unread 06-18-2015, 07:27 PM   #1
my_304_cj7
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Quadratrac fill plug stuck

I'm in a tight spot. I am supposed to be leaving tomorrow at noon on a 300 mile trip. I can get the fill plug off the low range and it is low but I can't get the fill plug out of the tcase itself. I tried everything(heat, pb blaster) and I am running out of time.

My question is, can I fill the low range unit, drive figure 8's, check and refill as necessary and repeat?

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Unread 06-18-2015, 07:50 PM   #2
skizriz
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Hold on, I may be wrong about that........

I always thought the two were open to share oil through a port. But am reading that they don't share oil.
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Unread 06-18-2015, 08:52 PM   #3
lucdog
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They do share the same oil, the proper filling would be to fill the low range until the oil just runs from the fill port, then fill the main case until oil runs from that case. I believe the oil that is lost by the gears moving in the low range ( it just runs into the main case) is replenished by the oil coming of the chair as it goes around .

If the main case has enough oil, I wouldn't be overly concerned.

The problem your having is due to the steel plug, in a aluminum case. It's a dissimilar metals thing.

The first time I ever filled my low range unit, I way over filled the main at the same time. I kept putting oil in as it was running out the low range . When I checked the main case all the extra oil I put in the low came out.
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1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7
1989 YJ the CJ to YJ.
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Unread 06-18-2015, 08:55 PM   #4
lucdog
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Did u try a cheater bar with the wrench?
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1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7
1989 YJ the CJ to YJ.
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Unread 06-18-2015, 08:59 PM   #5
skizriz
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That's what I thought Bill. You COULD fill it through the low range by capacity, it would just take a lot longer to get it to flow into the main case. Correct?
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Unread 06-18-2015, 09:10 PM   #6
lucdog
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Quote:
Originally Posted by skizriz
That's what I thought Bill. You COULD fill it through the low range by capacity, it would just take a lot longer to get it to flow into the main case. Correct?
Correct. If the main case isn't empty, there would be no way to tell how much oil was in it, without removing the plug. Over filling isn't a good thing.
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1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7
1989 YJ the CJ to YJ.
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Unread 06-19-2015, 05:37 PM   #7
my_304_cj7
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I made up here. I pulled the drain plug quickly, just to make sure it had a steady flow. So I knew it wasn't empty.

On another note, ran into town Jeep cut out on the way back. Pretty sure the ignition coil is bad. I've got my wife picking one up so we will see.
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