TOOL BRIEFING p The cylinder head has been installed, and the head bolt torque has been set. Photo courtesy of Eric Moore to be into the engine this deep prior to this failure. Our techs prepared the cylinder block surfaces with their Chicago Pneumatic angle die grinder with surface prep discs and a Cornwell straight razor blade scraper. Then we took the time to clean off the tops of the pistons and inspect the cylinder liner walls. The liners still have crosshatch, which we made sure to point out to our field crews as an example of why we perform maintenance the way we do, choosing synthetic fluids with routine fluid analysis to prolong our equipment's lifespan. Assembling the replacement cylinder head, tappet rack, and related harnesses on the bench, the techs chased most of the fasteners and bolt holes with Snap-on taps and dies prior to assembly. One tech placed the new head gasket on the block, and we lowered the new head into place. Then we applied either sealant p New vs. old - Transferring parts to the new assembly. Photo courtesy of Eric Moore 40 PTEN AUGUST 2023 www.VehicleServicePros.com or lubricant as required to start the torque sequences for the new cylinder head bolts. Several steps and angleshttp://www.VehicleServicePros.com