OEM Mercury Mariner Valve Stem Seal

Mercury Mariner Valve Stem Seal Parts and Q&A

• Valve Seals, Brown/Gray
  1S7Z-6571-A
  Q: How to Service and Repair Valve Stem Seals on Mercury Mariner?

  A:

  The repair and service of the valve guide seals starts with proper cleanliness to stop foreign substances from entering oil or coolant channels that result in complete engine breakdown. The service requires positioning the vehicle on a hoist and setting the vehicle neutral while removing camshafts. When using existing camshafts and valve tappets, mark original locations because the numerical code behind the decimal point indicates the precise size (example: 0.650 shows 3.650 millimeters of dimension). The compressed air supply at 7-10 bars (100-150 psi) must be connected to cylinder No.1 Spark Plug holes until the valve spring retainer installation to protect the valve from entering the cylinder. Compressed air should be applied to the cylinder before using Valve Spring Compressors to squeeze the valve spring while removing the valve collet with a small screwdriver and multi-purpose grease. The valve spring retainer and spring should then be installed. The Valve Stem Oil Seal Remover partnered with the Slide Hammer allows the technician to remove the current valve stem seal before disposing of it. Begin by placing the valve stem seal installation sleeve before using the Valve Stem Oil Seal Installer to install the new valve stem seal while checking the proper positioning of the valve collet. The valve spring must be reinstated using the Valve Spring Compressors before valve spring retainer and collet installation with required applications of multi-purpose grease. After disconnecting compressed air supply, continue the removal and installation actions for the other cylinders. Place clean engine oil on valve tappets followed by reinstallation of the camshafts.