Can a valve cover be replaced at the same time?
NOTE: An efficiency gain can be made by combining valve cover gasket replacement with spark plug / wire change outs and / or crank position sensor replacement. If you can replace the spark plugs and reseal the valve covers at the same time, the labor is reduced substantially.
Why do valve covers have a capture groove?
The purpose of the cap screw and accompanying light torque is to hold the alignment of the covers during installation so that the RTV sealant is not disturbed while curing. Valve covers have a capture groove for the gasket. A properly manufactured gasket is molded to include side ridges for a tight fit into the valve cover.
What is the part number for a valve cover gasket?
– 5 stainless steel replacement bolts to replace the aluminum – Old Part number 000912-005010, M5x18 superceded by new Part number 000000004436. A MB valve cover gasket should come with a cardboard backing and already be laid out to relax in its final form.
Can you use steel cap screws on magnesium valve cover?
Substituting a steel cap screw instead of stainless will result in galvanic corrosion since the cap screws thread directly into the magnesium valve cover. These cap screws are to be lightly torqued to 4-Nm. Over torque could damage the magnesium threads in the valve cover.
NOTE: An efficiency gain can be made by combining valve cover gasket replacement with spark plug / wire change outs and / or crank position sensor replacement. If you can replace the spark plugs and reseal the valve covers at the same time, the labor is reduced substantially.
The purpose of the cap screw and accompanying light torque is to hold the alignment of the covers during installation so that the RTV sealant is not disturbed while curing. Valve covers have a capture groove for the gasket. A properly manufactured gasket is molded to include side ridges for a tight fit into the valve cover.
– 5 stainless steel replacement bolts to replace the aluminum – Old Part number 000912-005010, M5x18 superceded by new Part number 000000004436. A MB valve cover gasket should come with a cardboard backing and already be laid out to relax in its final form.
Substituting a steel cap screw instead of stainless will result in galvanic corrosion since the cap screws thread directly into the magnesium valve cover. These cap screws are to be lightly torqued to 4-Nm. Over torque could damage the magnesium threads in the valve cover.