While changing out the Timing belt and crank seal etc. we encountered a leak and had to disassemble. The Crank bolt was put in using an 18 volt socket wrench but we cannot loosen with a 150 PSI air wrench the Wrench is new From Snap on and used in a professional settin daily and the compressor is a new Craftsman so we know it is not the equipment. Has anyone encountered this and had success fixing it?

 

Do you have access to the 18 volt socket wrench you used to tighten it? Sounds like the air compressor is undersized.

 

You can also "bump" it with a wrench of the correct length so that it wedges against a piece of steel near the crank bolt, and then "bump" it with the starter.

 

Call me old fashioned, but for securing, I always thread by hand (no tools) till all threads are threaded. Then I use torque wrench.

Some folks use blue locktite to secure. If you did then use heat to break the bond.

Checkout the home made SST to hold the main pulley and you can go at bolt with a breaker bar. Remember to use 6pt socket


Salim

 

I don't know about Lexus but some crank bolts are RH threads. Just a thought.

 

Normal thread ... righty-tighty, lefty-loosy

Salim

 

When I took mine out it took a 3 ft breaker bar and almost all of my (200lb) weight on the end of it before it came loose.

 

Long breaker bar with pipe extension and can bind the flywheel thru the access panel with something. Those bolts will stick really bad....even after a short time. I took mine loose twice in a year and it was very tight each time.

 

I think you meant to say LH thread. All "normal" nuts/bolts are RH threaded.

 

Yes, sorry, You're right, I meant LH thread but Salim said they are normal [RH] threads - just tight I guess. Thanks.

 

Tried most of the responses.

We used 150 # behind a good Air impact. we also tried bumping. We are going with the larger breaker bar. Any tips on immoblizing the flywheel? Thanks to all.

 

Did you build the tool to hold the main pulley? [my preferred method]

Bumping the starter should have given you enough torque. Why did it not work? You could not lock the breaker bar against the frame or floor. [acceptable but not my preferred method]

Holding the flywheel can cause serious issues in case you break the tooth/teeth of the gear. [I would discourage this way]


Salim