Replaced my fuel tank which had cracked on the top near the e-brake cable channel.
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You'll see it after you take the first one off. On the backside of the nut or bolt, there will be grooves cut in it that make it not loosen itself. Hard to explain but you'll see the grooves, I believe on the nuts. Take one off and note which have it.I soaked it. I can get my impact in there on the bolt. Can I undo the bolt or do I have to undo the nut?
It says the nuts in this thread:
https://forum.ih8mud.com/threads/how-to-replace-the-u-joints-in-your-80.72157/
SONUVABITCH! It's a PITA!!
Flew from Lafayette, Louisiana to Chicago to pick up and drive home my new (to me) 1997 FZJ 80. She has 124k on the clock! Drove 1027 miles in two days and loved every mile!
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You just haven't paid enough attention!None of the dozens of toyota driveshaft bolts I've removed have been serrated locknuts. They have all had split lockwashers.. but no locknuts. They use a very high grade steel and a shallow thread pitch with a pretty significant amount of torque to clamp the piss out of the flanges. It is a good system.
For stubborn ones you can hook the box end of another combination wrench onto the open end of the one you are using to loosen the bolt..
like this:
http://image.fourwheeler.com/f/40948650+w600+cr1/129_1206_52+low_buck_bonanza+wrench_in_a_wrench
I'll also use sockets and my 1/2" breaker bar sometimes. When they are torqued appropriately they are tight but a combination wrench, work gloves, and some force will get them loose.
The other thing I'll do depending on access is put the two 14-mm combination wrenches (one on the nut, one on the bolt) closely aligned so that simply squeezing the two wrenches together with both hands gets the initial loosening done. This may provide more torque than simply pushing or pulling, again depending on access.
"This is a ½ banana job requiring you to undo 8 bolts (although you have to remember to loosen from the bolt side, not the nut, because the nuts are friction locking and can wear out)"Factory prop-shaft bolt/washer/nut from the parts bucket. What halfway looks like serrations on the back of the nut is actually paint that transferred from the back of the pinion flange to the nut. The machining on the back of the flange makes the paint look serrated, but this is easily scraped off.. to reveal smooth metal with the same flat-gray color as the rest of the prop-shaft hardware. I left half of the paint on the back of the nut in the picture for reference.
My FZJ-80 rear bolts are larger and I don't have any spares to take pictures of.. maybe those are serrated, but I don't remember seeing that either. And I'm OCD enough to notice this stuff.
All of that said.. toyota definitely uses bolts with "teeth" on the back of the flange for suspension links on these trucks.. so it isn't completely outside their wheelhouse.
Edit: Toyota uses the same part number for the nuts on both ends of the shaft. This doesn't allow for what was posted in the linked thread about the axle end nuts being serrated.
Installed some outback drawers.
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Installed some outback drawers.
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