HUMMER H1 6.5 Litter Turbocharger Repair Service Kit
FITS HUMMER H1 YEAR MODELS 1996 TO 2004. This kit has all the wear items needed to reman a turbocharger IF there is no damage to the internal components (only wear). If the turbo has failed in the field and internal components have contacted each other or if some foreign matter has entered the turbo causing damage, then further parts past the service kit are needed to repair the unit.
It is advised that a turbo specialist repair the unit as the job would need special knowledge to repair. Common Causes for Turbocharger Failure Page. Common Causes for Turbocharger Failure This section will discuss the four primary causes for turbocharger failure. It is important to note that when a turbocharger fails for any reason, there is almost always secondary (and often more severe) damage caused by the resulting shaft motion.
You must look passed the obvious damage to locate the root cause. Note that some "cause of failure" descriptions contain very similar indicators so be sure to read through all prior concluding your analysis. Lack of Lubrication / Contaminated Oil (Causes over 40% of Failures) The lubrication system plays a vital role in extending the life expectancy of a turbocharger by lubricating, cooling, and cleaning the bearings. The shaft and bearings must "float" on a constant, clean film of oil to prevent direct contact with each other which will result in damage.
Any lack of oil flow or foreign contaminant i. Dirt, sand, or metal shavings in the oil will cause excess wear and/or scaring on the bearing surfaces. This wear will often increase the clearances between rotating components resulting in excess "shaft motion". A large amount of "shaft motion" is detrimental to the life of a turbocharger. Common causes of lubrication failure. Obstructed oil supply / drain lines. Fast starts in cold weather.Hot shutdown (Figure 6) - Engine is shutoff at high rpm/temp; instant oil flow loss causing overheating. Occurs when anything exterior to the turbocharger is affecting the oil flow supply or drain lines, engine blow-by, etc. All thrust & journal bearings as well as the turbine shaft will show signs heat discoloration (Figure 7) as well as wear from the resulting shaft motion. The wear will appear smooth or "wiped" (Figures 8 & 9) and should not have any significant scaring (Figures 10 & 11).
Unwarrantable: The cause of this failure is external to the turbocharger. Visible when one or more, but not all, of the bearings show the above mentioned wear. This indicates that only one of the oil feed lines have been blocked from either contaminated oil (see below) or a manufacturers defect. Warrantable: If there are no signs of contaminated oil. Unwarrantable: If there are signs of contaminated oil or "coking" of the oil caused by overheating.Occurs when abrasive material such as dirt, sand, or metal shavings enters the oil passages. This is generally easy to notice as the bearings and connecting components will show abnormal grooves and scratches (Figures 10 & 11). This may also cause a lack of lubrication failure as noted above.
Unwarrantable: The cause of this failure is related to the installation or oil quality within the vehicle. The listing will indicate return deadlines. If you order the wrong part and wish to return it a. Questions we will do our best to assist you in getting the correct part, please keep in mind that its the buyers responsibility to refer to the appropriate parts manual to insure the part number listed on the item fits their application.