Jake323
02-14-2005, 09:13 PM
Here's a couple of tech bulletins that a machine shop owner buddy of mine gave to me concerning our trucks.
***I tried to upload the photocopy of these bulletins but the file was to big, so I will type it in.**
AERA(Automotive Engine Rebuilder Association) Tech bulletin # 2226
Repeated turbo charger failures on 2001- to 2004 GM 6.6L VIN 1&2 Engines
Subject:
Diagnostic info for Turbo failure due to lack of oil or reapeat turbo failures
Models:
2001-2004 Chevy Silverado
2001-2004 Chevy Kodiak 4500/5500 series
2001-2004 GMC Sierra
2001-2004 GMC Top Kick 4500/5500 series
"If a turbocharger failure is thought to be caused due to lack of oil, the camshaft bearins should be checked. The number 4 camshaft bearing bore feeds the turbocharger oil supply hose. If the camshaft bearing spins in the bore, the turbocharger will be starved for oil. This will cause a failure of the turbocharger. Failure to diagnose this condition will cause repeat turbo failures."
It goes on to say that in the event of a turbo failure, you should remove the turbo oil supply hose from the block and inspect to see if the #4 bearing is spun.
Bulletin # 2(AERA #2224) Is about oil cooler leaks for the same model years.
Minor block imprefections can cause oil to seep past the oil cooler O-rings.
If oil cooler is leaking, remove from engine and replace O-rings and apply sealant Part#97720043
This is just an FYI for you guys, I don't have any knowledge as to the freqency of these type of failures. Eric could probably shed more light on that.
Later,
Jake
***I tried to upload the photocopy of these bulletins but the file was to big, so I will type it in.**
AERA(Automotive Engine Rebuilder Association) Tech bulletin # 2226
Repeated turbo charger failures on 2001- to 2004 GM 6.6L VIN 1&2 Engines
Subject:
Diagnostic info for Turbo failure due to lack of oil or reapeat turbo failures
Models:
2001-2004 Chevy Silverado
2001-2004 Chevy Kodiak 4500/5500 series
2001-2004 GMC Sierra
2001-2004 GMC Top Kick 4500/5500 series
"If a turbocharger failure is thought to be caused due to lack of oil, the camshaft bearins should be checked. The number 4 camshaft bearing bore feeds the turbocharger oil supply hose. If the camshaft bearing spins in the bore, the turbocharger will be starved for oil. This will cause a failure of the turbocharger. Failure to diagnose this condition will cause repeat turbo failures."
It goes on to say that in the event of a turbo failure, you should remove the turbo oil supply hose from the block and inspect to see if the #4 bearing is spun.
Bulletin # 2(AERA #2224) Is about oil cooler leaks for the same model years.
Minor block imprefections can cause oil to seep past the oil cooler O-rings.
If oil cooler is leaking, remove from engine and replace O-rings and apply sealant Part#97720043
This is just an FYI for you guys, I don't have any knowledge as to the freqency of these type of failures. Eric could probably shed more light on that.
Later,
Jake