Viper SRT-10 V10-8.4L (2008)
Valve Guide Seal: Service and Repair
Valve Spring/Seal Service In-Car
STANDARD PROCEDURE - VALVE SPRING/SEAL SERVICE IN-CAR
1. Disconnect negative battery cable.
2. Disconnect secondary ignition wires and remove spark plugs.
3. Remove coil cover.
4. Remove cylinder head cover(s) See: Cylinder Head Assembly/Valve Cover/Service and Repair/Cylinder Head Cover - Removal.
5. Rotate crankshaft until No. 1 piston is at TDC on compression stroke.
6. Remove rocker arms with pivots. The rocker arm bolts should not be removed and remain in the trunion.
7. With air hose attached to spark plug adapter installed in No. 1 spark plug hole, apply 620.5 - 689 kPa (90 - 100 psi) air pressure. This is to hold
valves into place while servicing components.
CAUTION: Place a suitable shop towel around the valve spring being serviced to prevent the valve retaining locks from entering the
engine once the valve spring is compressed.
8. Using valve spring compressor MD998772-A with insert 6716-A (1), compress valve spring (2) and remove valve keepers.
9. Release valve spring compressor (1).
10. Remove valve spring and retainer.
11. Remove valve seal.
12. The intake and exhaust valve stem seals should be pushed firmly and squarely over the valve guide using the valve stem as guide. Push 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.
13. Follow the same procedure on the remaining 9 cylinders. Make sure piston is at TDC on the cylinder the valve spring is being removed.
14. Remove spark plug adapter tool.
15. Install rocker arm and pedestal assemblies. Ensure push rods are seated properly under each rocker arm. Tighten rocker arm bolts to 35 Nm (26 ft.
lbs.).
16. Install cylinder head covers.
17. Connect negative battery cable.
