Crank bolt defeat......again

[Godwin]

I have tried multiple times now to remove the crank bolt on the 80 series and that sucker is stuck. I've used the starter method and only broke or bent tools. I've jammed a deep socket 14 mm on a flex plate bolt and cracked it when pulling on the crank bolt. Yesterday I got on it with an impact wrench and cracked the 30 mm socket. Granted this was just a regular socket, but dang.. This afternoon I picked up a 30 mm impact socket from HB. Using a HB 14 mm deep impact socket on a flex plate bolt and a long pipe for a cheater on the crank bolt I bent a solid bar with a 1/2" drive.

I'm running out of ideas. I don't want to use heat due to damaging the crank seal and then being unable to pull the harmonic balancer. Also don't know if the harmonic balancer does or does not have a rubber core.

Pack it with dry ice and hope that a dramatic freezing and warming cycle will loosen up the bolt?

I may just have to live with the oil pump cover oil leak.

The offending bolt.

Carnage from yesterday.

 

[bhmmapping]

3/4 inch bar with the impact socket?

 

[Godwin]

I have 3/4 breaker bar, just need to pick up a 3/4 to 1/2 reducer. I'll give this a try, not ready to give up yet.

 

[Land Speeder]

ditch the 12-point! Those sucketh anyway. Gotta go 6-point. IMPACT socket and breaker bar. LONG one. The breaker bar we used on a few FZJ's was so long... we had to raise the truck on the lift. Literally, that long. braced it undder the passenger frame rail. Then bumped the the starter (with coil wire unplugged).

 

[jynx]

Dang! That's nasty. Can you get a 3/4" 30mm socket? seems with all the trouble you may want to eliminate the adapter.

 

[Blackdog]

How many years has this thing bested you now? I remember seeing you post up about this bolt a LONG time ago, don't I?

 

[Godwin]

I don't think it's more than 3 or 4 . My defeated streak is unbroken. Picked up a 3/4 to 1/2 impact adapter today so that I could use the 3/4 breaker bar I have. Hooked up the 30 mm 1/2 drive impact socket and used a long pipe that barely cleared the underside of the hood. Began to pull and pull and pull and something began to give. I sheared off the adapter. Just gonna live with the leak for now.

Lesson learned go all 3/4" or larger.

 

[Waorani]

http://www.amazon.com/Sunex-4-Inch-Drive-Impact-Socket/dp/B000TQ2U9Y/ref=pd_rhf_gw_p_img_6

 

[Land Speeder]

Ditto that link.
You're walking up to a major league batters box with a wiffle ball bat.

 

[ton504]

I used a 1/2 snap on impact socket with a long snap on breaker bar. It came off with a loud pop. Just need quality tools...

 

[Godwin]

Carnage accumulation. Next Amazon order will include a big fat 3/4 30mm impact socket. Living with oil leak for now because I had to get the 80 back on the road. New radiator, water pump, t-stat, and few other bits. My first time for digging in this deep into the front of the 80. Fairly easy job.

 

[Elbert]

The necked down adapters are not that strong...and will be the first to break...get all tools at 3/4 and I think you'll make it. while not specific to the 80 I've used a large 3/4 breaker bar and then a section of metal pipe to extend the arm about 5 feet or so on the tough stuff. You might only have room for something like that if the truck is on a lift, as you want your breaker bar attaching to the socket directly with no extensions and you want to keep the breaker bar at 90degrees to the socket and pull straight. (of course some times you do what you have to do). I would think with plenty of air pressure one of these new high torque impact guns would make it happen.