OEM Jeep Commander Intake Valve

Jeep Commander Intake Valve Parts and Q&A

• Intake Valve
  53022087AC
  Q: How to Remove and Replace Exhaust Valve and Intake Valves on Jeep Commander?

  A:

  The first part of doing this is to take out and isolate the negative Battery Cable. Next, you should take off the cylinder head covers, continue with the Rocker Arms and finish with the lash adjusters. Following this, unscrew the Camshaft bearing caps and camshaft and finally get the cylinder head(s) out. Either Tool C-3422-D or C-3422-C Valve Spring Compressor can be used and the Tool 8519 Adapter will help, if you have to tap the head of the valve spring to release the locks on the spring retainer. Remove each spring retainer lock half slowly and use this step to also remove the valve spring compressor. After that, get rid of the spring retainer and the spring so you can check for possible sharp places in the keeper grooves and if there are tiny burrs on the valve stem, remove them before getting the valve out of the cylinder head. Lift out the Valve Stem Seal and use a mark to remember the valve's position. Any time you remove a valve spring, inspect it for damage and check with a tester that it meets the right specs for both open and closed spring heights and forces. If any springs do not match the proper requirements, get new ones.
• Intake Valve
  53020747AB
  Q: How Can Exhaust Valve and Intake Valve Seats Be Reworked to Ensure Proper Refacing on Jeep Commander?

  A:

  The seat in the valve can be smoothed out and used again, if the angle and width are respected, since otherwise, the whole cylinder head must be changed. Use the exact size valve guide pilot as you reseat the stones when refacing valves and seats, so you end up with a correct and complete surface. First, place a dial indicator on the center of the valve seat and check that total run out remains within 0.051 mm (0.002 inch) of the measured value. Lightly paint Prussian blue on the valve seat, insert the valve (4) or (5) into the cylinder head and push it in place while turning it. After removing the valve, check its face and, if the blue is near its top, adjust the seat with a 15 degree stone. For blue near the bottom, adjust it with a 65 degree stone. A properly seated intake seat must measure between 1.75 and 2.36 mm (0.0689 and 0.0928 inch) and an exhaust seat between 1.71 and 2.32 mm (0.0673 and 0.0911 inch). When finishing, the valve spring installed height should be no greater than 40.74 mm (or 1.6039 inch) for both valves. The seat and face of the valve should meet at an angle of 44.5 - 45° as well.