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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 3.6L Engine (Service Information) >> Cylinder Head >> Valves, Intake And Exhaust >> Standard Procedure >> Refacing Intake And Exhaust Valves >> Valve And Spring Installed Height

Valve And Spring Installed Height

Fig 1: Checking Valve Spring Installed Height
GC0144260Courtesy of CHRYSLER GROUP, LLC
NOTE:

If the valves are being reused, reassemble them into their original locations.

  1. Coat the valve stems (2) with clean engine oil and install the valves onto the cylinder head.
  2. If the valves or valve seats have been refinished, check the valve tip height (5). If the valve tip height (5) exceeds the specification, grind the valve tip until it is within. Refer to ENGINE SPECIFICATIONS . Make sure the measurement is taken from the cylinder head surface (7) to the top of the valve stem (2).
  3. If removed, install the spring seat and valve guide seal over the valve guide. Refer to SEAL(S), VALVE GUIDE, INSTALLATION .
    NOTE:

    Make sure that the garter spring is intact around the top of the valve guide seal.

    Fig 2: Valve Spring & Valve Spring Retainer
    GC0144252Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    If the valve springs are being reused, reassemble them into their original locations. Number 5 cylinder exhaust valve spring shown in illustration, all other valves similar.

  4. Install the valve spring (2) and valve spring retainer (1).
    Fig 3: Compressing Valve Spring & Locating Valve Retaining Locks
    GC0144219Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    Number 3 cylinder intake valve spring compression shown in illustration, all other valves similar.

  5. Compress the valve spring (3) with the Valve Spring Compressor Adapter (special tool #10224, Adapter, Valve Spring) (2) mounted in the Valve Spring Compressor (special tool #C-3422-D, Compressor, Valve Spring) (1). Install the retaining locks (4) and release the valve spring compressor.
    Fig 4: Checking Valve Spring Installed Height
    GC0144260Courtesy of CHRYSLER GROUP, LLC
  6. If the valves or valve seats have been refinished and the installed valve spring height (4) is greater than 40.0 mm (1.575 in.). Install a second spring seat (8) in the head counter bore under the original valve spring seat to bring the spring height within specification. Make sure the measurement is taken from the top of spring seat (6) to the bottom surface of spring retainer (1).
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