Avenger V6-3.5L (2008)
Valve Spring: Removal and Replacement
Cylinder Head Off
REMOVAL - CYLINDER HEAD ON
1. Disconnect negative battery cable.
2. Remove upper intake manifold See: Intake Manifold/Service and Repair/Intake Manifold - Removal.
3. Remove cylinder head cover(s) See: Valve Cover/Service and Repair/Cylinder Head Cover - Removal.
4. Remove rocker arm and shaft assembly.
5. Remove spark plugs.
6. Rotate the crankshaft clockwise, until the number 1 piston is at TDC (Top Dead Center) on the compression stroke.
7. With air hose attached to spark plug adapter installed in number 1 spark plug hole, apply 620.5 to 689 kPa (90 to 100 psi) air pressure. This is to
hold valves into place while servicing components.
NOTE: It may be necessary to use accessory studs 6886, adapter arm 6887 and 6885 valve adaptor along with MD 998772A, to compress
the valve spring on the right cylinder head exhaust valves.
8. Using Tool MD 998772A (1), with adapter 6527 (4) or equivalent, compress valve spring and remove valve locks (5). Release tension on valve
spring, remove retainer (5) and valve spring See: Tools and Equipment.
9. Remove valve stem seal, if required. See: Seals and Gaskets/Valve Guide Seal/Service and Repair/Valve Guide Seals - Removal
10. Follow the same procedure on the remaining 5 cylinders using the firing sequence 1-2-3-4-5-6. Make sure piston is at TDC in each cylinder of
the valve spring that is being removed.
11. Remove spark plug adapter tool.
Cylinder Head On
REMOVAL - CYLINDER HEAD OFF
1. Compress valve spring with valve spring compressor C-3422-D and adapter 6526 See: Tools and Equipment.
2. Remove valve retaining locks. Release valve spring compressor. Remove valve spring retainer and valve spring.
3. Remove valve stem seal assembly. See: Seals and Gaskets/Valve Guide Seal/Service and Repair/Valve Guide Seals - Removal
Cylinder Head Off
INSTALLATION - CYLINDER HEAD ON
