Utilizing guide bushing and tooling bits that exceed Aerospace standards, technicians can now drill then tap bolts that break off inside the crankshaft of a 3.5L EcoBoost Engine. It replaces the serpentine drive belt that requires the removal of the crankshaft bolt & harmonic balancer. This routine procedure comes with the risk of breaking the crankshaft bolt and turning a simple replacement into a major engine tear down.
Crankshaft bolts risk breakage when being torqued past OEM specifications. This can occur anytime the harmonic balancer or pulley are being removed, replaced, or adjusted.
To date, the only solutions have been to either pull the motor and have the crankshaft machined, or to freehand drill the broken bolt and attempt extraction with an easy-out, which always risks breaking as well. The goal with the 3.5L EcoBoost Crankshaft Repair Kit, as with all ProMAXX kits, is giving technicians much more productive repairs and an immediate return on their tool investment.
The 3.5L EcoBoost Crankshaft Repair Kit allows technicians to confidently and quickly drill out the broken bolt then tap the threads back to factory new. In addition, having this tool on hand while working on a crankshaft will give shops a safety net to keep tackling tough jobs and getting trucks and fleets back on the road, making money for their owner.