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Snapped front crank bolt. Next steps?

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Old Sep 22, 2025 | 09:39 AM
  #16  
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Oh lord Im an idiot. You're right...it just removed the bolt. Of course. Thing is my 3 foot pry bar is ratcheting and reversible and sometimes it clicks into reverse unwittingly. The 24mm socket was hanging at an angle so I assumed it snapped...and from the incredible boom.

My apologies.

So here is the bolt and of course now I have a minor leak.
  • Do I need to use a new bolt?
  • New seal?
  • Do the harmonic balancers need replacement at 250k miles?
  • I really don't want to put in more money until I get the truck running with the new cups/ remanufactured injectors.




 
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Old Sep 22, 2025 | 09:59 AM
  #17  
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You unwhittinly found a way to knock the bolt loose without an impact or rigging up a way to lock it down . Lol
 
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Old Sep 22, 2025 | 10:04 AM
  #18  
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From: Bahstun
Does your pulley on the balancer have any run out aka wobble?
since the belt is worn in the middle, the balancer may be on its way out

There is a dab of RTV that goes on the key when installing the balancer.
Bolt removal may have disturbed it.
 
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Old Sep 22, 2025 | 10:18 AM
  #19  
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Originally Posted by knottyrope
Does your pulley on the balancer have any run out aka wobble?
since the belt is worn in the middle, the balancer may be on its way out

There is a dab of RTV that goes on the key when installing the balancer.
Bolt removal may have disturbed it.
hmmm... Ive never put a runout gauge on it. It only has 250k miles on it.

Do I need to pull the balancer pulley to put in a new seal/washer/RTV?

Do I need to use a new bolt?
 
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Old Sep 22, 2025 | 11:57 AM
  #20  
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From: Bahstun
Originally Posted by Lex2002
hmmm... Ive never put a runout gauge on it. Its only for 250k miles on it.

Time and oil affect them, not millaege

Do I need to pull the balancer pulley to put in a new seal/washer/RTV?

Yes to do it right

Do I need to use a new bolt?
nope
 
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Old Sep 22, 2025 | 12:27 PM
  #21  
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ok so I can just lock the flywheel in place and reinstall the same bolt and washer and torque to 212 ft lbs?

 
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Old Sep 22, 2025 | 12:30 PM
  #22  
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From: Bahstun
yes you can
 
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Old Sep 22, 2025 | 01:14 PM
  #23  
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WOW....ok. Ill keep an eye on the leak afterwards.

Would it be worthwhile to get a new bolt?
 
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Old Sep 22, 2025 | 04:58 PM
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No but replacing the harmonic balancer itself wouldn’t be a bad idea if budget allows.
 
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Old Sep 22, 2025 | 05:17 PM
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Originally Posted by Lex2002

Is that a leaking oil pump?
 
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Old Sep 22, 2025 | 07:47 PM
  #26  
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That leak started when I accidently and spectacularly removed the crankshaft bolt.
 
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Old Sep 22, 2025 | 08:12 PM
  #27  
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Originally Posted by Brandonpdx
No but replacing the harmonic balancer itself wouldn’t be a bad idea if budget allows.
Yes budget allows but first I wanna see if the injector and injector cup swap is trouble free before I embark on the pulley/dampener and oil pump.

If I can just reinstall the old crankshaft bolt and move onto running the truck for a 100 miles t test the injectors, then I can order the pulley and oil pump.

Thanks Brandonpdx
 
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