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Unread 08-31-2011, 06:41 PM   #1
sptrmike
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need help dropping gas tank

i have a 89 yj with 20 gal poly tank, i have the electric diconected , the filler neck and vent from behind the gas cap disconected. i need to know how far i can drop everything to get at the feed and return line, also my haynes says there are vent lines on the side i cant find any. any info would be greatly appreciated.
thanks mike

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Unread 08-31-2011, 08:24 PM   #2
rustybeater
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I thoght that there was a vent line over ther by the filler neck that i removed I cant remember for sure and I just put a jack underneath the skid plate and dropped it down I want to say there is two nuts in the foward part and two in the aft part holding it up you can leave the gas tank straps on.
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Unread 08-31-2011, 10:38 PM   #3
oldtime_ironman
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I was able to drop mine all the way onto the ground with the feed lines hooked up. The vent lines were a bit short on the driver's side but that didn't matter - I just plugged it all back together when it was halfway up, going back in.

.
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Unread 08-31-2011, 10:53 PM   #4
xjwags8789
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I would say just slowly lower it with a jack and if u see any potential problems with the lines getting kinked or breaking stop. Luckily on my xj the sending unit can be accessed without dropping the tank at all. Good luck.
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Unread 09-01-2011, 09:47 AM   #5
sptrmike
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thanks for the info guys, i'm heading back out to the garage now. one bolt in the front has to be cut to get the tank down, while looking at it last night thinking of a method that would not create any sparks i noticed that the tank overhangs the tailpipe. before i get to the point where the tank is half way out can someone tell me if i have to remove the exhaust to get this out. damn all i wanted to do was put my new bds springs in.
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Unread 09-01-2011, 09:53 AM   #6
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Originally Posted by sptrmike View Post
damn all i wanted to do was put my new bds springs in.
then why are you dropping the tank, is there another reason? just use a sawzaw and cut the heads off the shackle bolts.
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Unread 09-01-2011, 09:54 AM   #7
Que89YJ
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The exhaust should be far enough to the left there is no interference and there is more then enough vent line to drop it.
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Unread 09-01-2011, 09:57 AM   #8
Randonexplosion
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I didnt even use a sawzall on my shackle bolts. You can wiggle the top bolt out without dropping the tank. Then put the new bolt in from the outside.
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Unread 09-01-2011, 10:09 AM   #9
19OlllllllO41
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Quote:
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then why are you dropping the tank, is there another reason? just use a sawzaw and cut the heads off the shackle bolts.
X2.... if your putting new BDS springs on you will really need new shackles anyway such as MORE 5/8in Boomerangs to keep the military wrap from hitting the frame. New shackles generally come with new bolts, so make life easy and just cut the old stubborn ones (or that bolt with the tank in the way). OR even if you don't decide to get new shackles and you have to cut your old bolt, you can easily pick up new grade 8 nuts and bolts at Lowes or Home Depot.
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Unread 09-01-2011, 10:14 AM   #10
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X2.... if your putting new BDS springs on you will really need new shackles anyway such as MORE 5/8in Boomerangs to keep the military wrap from hitting the frame.
I ran BDS with stock shackles for 18months.
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Unread 09-01-2011, 10:24 AM   #11
firefighter315
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Quote:
Originally Posted by 19OlllllllO41 View Post
X2.... if your putting new BDS springs on you will really need new shackles anyway such as MORE 5/8in Boomerangs to keep the military wrap from hitting the frame.
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I ran BDS with stock shackles for 18months.
OP, the 5/8" lift applies only to boomerangs or any other aftermarket shackle with a center pin or welded support member in the middle when using with a military wrap. I am using a set of 0 lift boomers that BrandonYJ cut for me several years ago with my BDS springs, but had to go without the center pin until I get some boomers with the 5/8" lift built in.

So yeah, use your stock shackles if you like, but if you use aftermarket shackles of any style with a center pin or whatever, make sure to get them with at least 5/8" lift added.
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Unread 09-01-2011, 10:28 AM   #12
19OlllllllO41
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OP, the 5/8" lift applies only to boomerangs or any other aftermarket shackle with a center pin or welded support member in the middle when using with a military wrap. I am using a set of 0 lift boomers that BrandonYJ cut for me several years ago with my BDS springs, but had to go without the center pin until I get some boomers with the 5/8" lift built in.

So yeah, use your stock shackles if you like, but if you use aftermarket shackles of any style with a center pin or whatever, make sure to get them with at least 5/8" lift added.
This is true, I wasn't thinking it out fully there.....
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Unread 09-01-2011, 10:31 AM   #13
CrawlingForward
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Yeah, no need to drop the tank for the springs (although for the record, once you have the filler and vent lines on the left side disconnected and the exhaust out of the way, the rest of the lines will travel all the way to the ground on stock suspension)

Just grab an open ended wrench and a deep socket on an impact wrench. You'll have to do a bit of wiggling, but you won't need to drop it to remove the bolt.

(Or just hack the sucker out)
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Unread 09-01-2011, 10:49 AM   #14
sptrmike
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i should have mentioned before, when i bought my yj the po had just put a rough country 4" lift in ,no need to keep beating that horse, anyway i can get at all the bolts but when i was underneath i saw some rust on the cross members and a small hole on drivers side seat belt mount so i figured while i'm under there i'd drop the tank por15 the frame and weld in any patches needed iam on vacation for four more days so i'm trying to get the rig ready for the winter wheather. back out to the garage
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Unread 09-01-2011, 02:49 PM   #15
sptrmike
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man i spent the last two hours trying to drop this tank i feel like a monkey trying to pull a bannana peel over a water melon, i cant get the filler neck past the frame i tried dropping the pass side lower and the tank pushes the tail pipe against the spring and jams. i had way less grief regearing my axles,rebuilding the engine and trans. this might be an easy job with a 15 gal tank but theres just no room with a 20 it looks like im going to have to bolt every thing back up and start over removing the exhaust first this sucks
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