Broken crank keyway?
- Thread starter jklanier
- Start date
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turblediesel
memberable
Looks like it needs a new key. Remove the big piece and use picks and a magnet to remove the smaller piece.
Thanks for the quick reply!
I'm clearly having a super awesome day....
So this is, in theory, fixable. Sweet.
Assuming I get the key off successfully, I would need to have someone weld a new key on?
Can that be done with the motor in the Jeep?
Do I have to pull the timing set?
I'm searching the forums and Google, but nothing helpful on a Liberty yet.
I'm clearly having a super awesome day....
So this is, in theory, fixable. Sweet.
Assuming I get the key off successfully, I would need to have someone weld a new key on?
Can that be done with the motor in the Jeep?
Do I have to pull the timing set?
I'm searching the forums and Google, but nothing helpful on a Liberty yet.
Logan Savage
Full Access Member
Never saw one of those keys that was welded to the crankshaft , there is a slot in the crankshaft that the key sits in . Hard to tell from your picture but if the slot in that crank gear is damaged I'd replace the gear .
I'd be curious where you'd get one. I had to swap mine from the old crank to the new one when I installed a crank kit from Rockauto. When I saw the new one didn't have the key I thought I was screwed but the old one pried out okay and I just tapped it into the new one. Went in good and snug.
turblediesel
memberable
Key should be snug. A good old hardware or car parts store might have keys or key-stock. McMaster-Carr or Grainger? There must be an official part number if you want to go that route.
Gear looks ok except for the little smear booger to the right of the key, file that off.
Gear looks ok except for the little smear booger to the right of the key, file that off.
TwoBobsKJ
Full Access Member
I agree - should be fixable.
Really wondering how in the world the thing got damaged...? There's not a lot of stress right there - the timing chain system is geared in such a way that it's pretty easy to turn the chains even when actuating the cams under full compression.
Is there an issue that required you to tear down the engine, like a dropped valve or something?
Bob
Really wondering how in the world the thing got damaged...? There's not a lot of stress right there - the timing chain system is geared in such a way that it's pretty easy to turn the chains even when actuating the cams under full compression.
Is there an issue that required you to tear down the engine, like a dropped valve or something?
Bob
no idea what caused this, other than a loos balancer bolt... I just replaced the head gasket about 2k miles ago
dealership has thee key in stock, heading up there now, and im going to see about a new balancer bolt as well... might as well..
Im hoping theres not valvetrain damage but a compression test will tell all once i get her back together...
dealership has thee key in stock, heading up there now, and im going to see about a new balancer bolt as well... might as well..
Im hoping theres not valvetrain damage but a compression test will tell all once i get her back together...
