Draining the oil is crucial before starting the resealing process. Use a carbide scraper to remove the old sealant, as a steel blade can damage the aluminum cylinder head. A vacuum is essential to collect the sealant debris, preventing oil contamination and ensuring a clean surface for the new sealant.
Time is critical when applying the new sealant, as it cures within minutes. Be prepared to bolt everything down immediately after application. Thorough cleaning is vital, as sealant fragments can clog oil screens and potentially damage the engine.
Remember that the bolts are torque-to-yield and should be replaced. The tightening sequence typically involves 7 NM of torque followed by a 90-degree turn. A digital torque wrench with degree measurement is indispensable for accurate tightening.
The valve cover, often referred to as the cam ladder or cam bridge, has an oil jacket that supplies oil to the vacuum pump. Avoid covering this jacket with sealant. Instead, use a new gasket for the vacuum pump.
Inspect the timing covers and the transmission inspection port for leaks. The lower timing cover reseal is complex, requiring multiple steps and specialized tools. If possible, use a vacuum tester to check for vacuum leaks in the system. A reading of 0 indicates proper function, while any vacuum reading suggests a faulty PCV valve, which can exacerbate oil leaks.
Avoid over-torquing the bolts, as this can lead to damage. Investing in a quality torque wrench is highly recommended. While a DIY approach can save money, it’s crucial to perform the job correctly to avoid costly repairs. Following these steps will ensure a successful Audi cam reseal in 2015. A meticulous approach and the right tools are essential for a successful and long-lasting repair.
