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Home >> Jeep >> 2007 >> Wrangler Rubicon, Standard >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> 3.8L Engine (Service Information) >> Cylinder Head >> Springs-Valve >> Installation >> Valve Springs Or Valve Stem Seals - In Vehicle

Valve Springs Or Valve Stem Seals - In Vehicle

Fig 1: Valve Spring - Remove/Install (Head On)
GC0064363Courtesy of CHRYSLER LLC
1 - SPECIAL TOOL 8453
2 - BOLTS - SPECIAL TOOL ATTACHING
3 - AIR SUPPLY HOSE ADAPTER
  1. The intake valve stem seals should be pushed firmly and squarely over the valve guide using the valve stem as guide. Do Not Force  seal against top of guide. When installing the valve retainer locks, compress the spring only enough  to install the locks.
    CAUTION: Do not pinch seal between retainer and top of valve guide.
  2. Follow the same procedure on the remaining 5 cylinders using the firing sequence 1-2-3-4-5-6. Make sure piston in cylinder is at TDC on the valve spring that is being covered. 
  3. Remove spark plug adapter tool (3).
    Fig 2: Rocker Arms & Shaft
    GC0064360Courtesy of CHRYSLER LLC
    1 - ROCKER ARMS AND SHAFT ASSEMBLY
    2 - ROCKER SHAFT BOLTS
  4. Install rocker arms and shaft assembly (1).
  5. Install cylinder head covers.
  6. Install spark plugs and connect wires.
  7. Connect negative cable to battery.