Magnum V6-3.5L VIN V (2006)
Lifter / Lash Adjuster: Service and Repair
Hydraulic Lash Adjuster Bleeding
STANDARD PROCEDURE - HYDRAULIC LASH ADJUSTER BLEEDING
Use this procedure to manually bleed aerated oil from the lash adjuster and remove sponginess.
1. Run the engine, bringing it to operating temperature in order to freshly pressurize and warm the valvetrain system oil supply
2. Remove cylinder head cover(s).
3. Ensure the rocker arm is positioned on the base circle (1) of the cam. Rotate engine as necessary.
4. For intake rocker arm positions:
a. Adjust Special Tool 8351 (1) Release Probe's gauge pin to extend approximately 20 mm (0.787 inch). Then, carefully insert the release probe
gauge pin into the lash adjuster (6) service access hole (2).
CAUTION: If probe tip (1) breaks off within the lash adjuster (6), replace the affected rocker arm (3).
b. Gently unseat lash adjuster's internal check ball (4).
c. While the internal check ball (4) is held unseated, press the rocker arm (3) into the valve tip (5), allowing the lash adjuster (6) to fully collapse.
Hold this fully collapsed position for about one second, or longer.
d. Slowly release the rocker arm (3), thereby allowing the lash adjuster (6) to extend, which in turn refills the high pressure chamber with
non-aerated oil.
e. Remove probe to allow check ball (4) to seat.
f.
Recheck for sponginess. If the lash adjuster (6) sponginess is not completely or nearly eliminated, then repeat procedure.
g. If the spongy condition cannot be removed, replace effected rocker arm(s) (3).
5. For exhaust rocker arm (3) positions:
a. Adjust Special Tool 8351 (1) Release Probe gauge pin to extend approximately 20 mm (0.787 inch). Then, using two release probes, carefully
insert gauge pins into the lash adjuster service access holes.
CAUTION: If probe tip (1) breaks off within the lash adjuster (6), replace the affected rocker arm (3).
