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1984 mc9 fuel tank...will NOT come out!

Started by Seann, May 18, 2026, 11:16:01 AM

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Seann

Hi All,
Well, if cleaning up the mess from the new leak in the driveway wasn't enough fun, pumped the tank out, now can't get the tank to come out. Large cradle hold down was rusted away to almost nothing, literally fell out (Canadian winters), don't see any other hold down at the back (driver side). I've tried the thin board underneath to ease going past "the bump", even tried pressure with a come a long. Nothing. It's sitting rattly loose but is so tight at the top it won't budge. Any other tips before I cut the floor??
Thanks,
Seann
1984 MC9

Tom Y

Maybe cut an access hole in the divider to look for another strap? Hate to see the floor cut.

Good luck,  Tom
Tom Yaegle

luvrbus

Some of the MCI's had a outlet for adding a auxiliary tank with a plate and 6 or 8 bolts and you had to pick up the tank level for space about 1 inch then it come out, if your tank is one of the few with the feed and return on back it becomes a major job
Life is short drink the good wine first

Seann

Not sure what you mean by "the divider"...in the middle underneath?
Thanks,
Seann
1984 MC9

Seann

I've cut the back wall out (driver side) to gain access to the rear of the tank. Having another go today with a board from both sides to try and raise it enough, with come a long pressure pulling from the pass side.
Thanks,
Seann
1984 MC9

Seann

OK...dropped the divider cover and there they were, 3 huge pipes leading to the aux tank. Didn't know I had that tank, the bay if finished with drawers, TV etc. Got the manifold plate undone, lowered the pipes and got the tank out. Next step drain aux tank and remove it and all plumbing, weld up main tank and test. I might even make it smaller. The tank cavity is a real mess too, sludge and rust. Will fab a new hold down strap, old one rusted away. Next calamity on the way???
Thanks for your suggestions,
Seann
1984 MC9

dtcerrato

Dan & Sandy
North Central Florida
PD4104-129 since 1979
Toads: 2009 Jeep GC Limited 4X4 5.7L Hemi
             2008 GMC Envoy SLT 4x4 4.2L IL Vortec

luvrbus

Quote from: Seann on May 27, 2026, 05:35:56 AMI've cut the back wall out (driver side) to gain access to the rear of the tank. Having another go today with a board from both sides to try and raise it enough, with come a long pressure pulling from the pass side.
Thanks,
Seann
Life is short drink the good wine first

luvrbus

Quote from: Seann on May 29, 2026, 06:17:22 AMOK...dropped the divider cover and there they were, 3 huge pipes leading to the aux tank. Didn't know I had that tank, the bay if finished with drawers, TV etc. Got the manifold plate undone, lowered the pipes and got the tank out. Next step drain aux tank and remove it and all plumbing, weld up main tank and test. I might even make it smaller. The tank cavity is a real mess too, sludge and rust. Will fab a new hold down strap, old one rusted away. Next calamity on the way???
Thanks for your suggestions,
Seann
The X tank is empty if the main tank is empty it fills and empties with the level of the main tank
Life is short drink the good wine first