Perform the following procedures for removal and installation of the protective sleeve.
Protective Sleeve Removal
Remove the protective sleeve as follows:
To avoid scalding from the expulsion of hot coolant, never remove the cooling system pressure cap while the engine is at operating temperature. Wear adequate protective clothing (face shield, rubber gloves, apron, and boots). Remove the cap slowly to relieve pressure.
Drain the engine coolant into a clean container. If the coolant is clean, save it for later use.