Broken camshaft pin 6 bent pushrods

[mlrdiesel]

Has anyone broken the camshaft pin ? The cam gear is not hurt but the dowel pin hole is some what egg shaped.

 

[mlrdiesel]

I think maybe the camgear bolt backed off

 

[Turbotug]

I personaly haven't, but issues with those pins are not rare.

 

[mlrdiesel]

I run a diesel shop this is a custamers 05 Duramax .. This is a work truck bone stock. 135000 miles . I think i will have the cam machined to fix the egg shaped dowell pin hole repaired

 

[mlrdiesel]

This is my first experence with issue like this 05

 

[LarryJewell]

:nopic:

 

[SmokeShow]

Yep, it's known to happen, even on stock trucks. Get with Guy Tripp of SoCal Diesel or Eric Merchant of Merchant Automotive and they can better describe the fix for it. My understanding is they machine a keyway into the cam/gear in order to handle the torsional load that sheared the pin. If I understand it right, that pin was never meant to hold a torsional load but rather was a place holder/locator pin. It's been a while since I read up on it so that might not be just right but I think it's close.

Good luck. And if you get a chance, pictures are always nice to see and learn from.


C-ya

 

[Trippin]

Happens all the time. Give me a call if I can help.
661-775-5620

 

[mvnvltn]

Mine has done it.

 

[Bluemax]

Is there a fix for this while the engine is in the truck or does it all have to come out to be keyed?

 

[mvnvltn]

The cam has to come out. Unless your really good with a cutoff wheel.

 

[mlrdiesel]

I am aware that the cam has to come out ..It doesnt look quite that bad.. mvnvltn..I will take some pics and post.. Thanks for all the input .. I would be happy to help any of you guys..

 

[Bluemax]

The cam has to come out. Unless your really good with a cutoff wheel.

That's what I figured, is there any way I can check to see if mine is broke or starting to slip visually, or will the front cover have to come off to even check it?

 

[LarryJewell]

what are the symptoms

 

[ecc_33]

from what i can tell the front cover will have to be removed to check the cam pin

 

[duratothemax]

what are the symptoms

engine blows up





















no but seriously, there are no warning signs. It just happends.

 

[Bluemax]

If the cam gear slips a little bit it should start running rough or smoking or something before it just blows up...At least rattle or something???

 

[mvnvltn]

what are the symptoms

I had no symptoms. Pulled off at a light, then no power lots of noise. Balance rates were fine. Sounded like a rod tore my oil pan open and poured out coolant on the road.

 

[bullfrogjohnson]

did you tear your block up DJ when it went

 

[mlrdiesel]

My custamer said he was doing about 50 mph when it let go ..And it sound like a rubberband unwinding. I went ahead and removed the heads to check the valves and pistons. they were alright. I also had the cam keyed.. MAN O MAN WHAT A JOB..Very good lerning experiance...The entire job took me 30 hours..Got it running about 8:30 This evening..