Diesel Data: Automotive Repair

Rocker Arm/Hydraulic Lash Adjuster

ROCKER ARM/HYDRAULIC LASH ADJUSTER


REMOVAL

1. Remove valve cover.
2. Remove rocker arm assembly.
3. Mark rocker arm/hydraulic lash adjuster assemblies for reassembly in there original position. Remove rocker arm/hydraulic lash adjuster assembly. Lash adjusters are serviced as a assembly with the rocker arm.






4. Inspect the rocker arm/hydraulic lash adjuster assembly for wear or damage. Replace assembly as necessary.


INSTALLATION

1. Install rocker arm/hydraulic lash adjuster assembly making sure that adjusters are at least partially full of oil. This is indicated by little or no plunger travel when the lash adjuster is depressed. If there is excessive plunger travel. Place the rocker arm assembly into clean engine oil and pump the plunger until the lash adjuster travel is taken up. If travel is not reduced, replace the assembly.
2. Install rocker arm assembly.
3. Install valve cover.