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Technical => General Tech Discussion => Topic started by: 57 Ford Kustom on 2013-02-07 19:12

Title: Harmonic center bolt
Post by: 57 Ford Kustom on 2013-02-07 19:12
Guys,
   I am triing to tighten my harmonic balancer center bolt. The tourque spec is 90 ft lbs, but the crank turns before it torques out. What is a good way to hold the crank stationary while torqueing the center bolt?
Thanks,
Tim :unitedstates:
Title: Re: Harmonic center bolt
Post by: rmk57 on 2013-02-07 23:01
If its a stick shift leave it in gear. An automatic try wedging a piece of wood between the crank and water pump pulleys.
Title: Re: Harmonic center bolt
Post by: rmk57 on 2013-02-07 23:15
Or, you could remove a spark plug place a piece of rope down cylinder and crank the engine around by hand to lock up the engine. That may also work.
Title: Re: Harmonic center bolt
Post by: Hoosier Hurricane on 2013-02-08 07:29
If you do the rope thing, be sure it is on the comprssion stroke or you may bend a valve.  John
Title: Re: Harmonic center bolt
Post by: BWhitmore on 2013-02-09 00:14
The best way to hold the crank is at the flywheel or torque convertor.  A large screwdriver will work or they make a tool to turn or hold the crank at the flywheel.
Title: Re: Harmonic center bolt
Post by: 57 Ford Kustom on 2013-02-09 06:16
Thanks Guys!
Tim :unitedstates: