PowerTech E 4045TF285/HF285 and 6068HF285 OEM Diesel Engines Operation & Maintenance Manual This is the COMPLETE Operation & Maintenance Manual for the POWERTECH E 4.5 and 6.8 L, 4045 and 6068, Tier 3 / Stage IIIA OEM Diesel Engines. THIS MANUAL CONTAINS INFORMATION to operate and service the following Tier 3 / Stage IIIA emission-certified’ […]