nsxb06032a.pdf

Rocker Arms and Lost Motion Assemblies
Inspection
NOTE: When reassembling the primary rocker arm, care-
fully apply air pressure to the oil passage of the rocker
arm.
PRIMARY ROCKER ARM
MID ROCKER ARM
SECONDARY
ROCKER ARM
PISTONS
Inspect the rocker arm pistons. Push them manually.
— If they do not move smoothly, replace the rocker
arm assembly.
PRIMARY
MID
SECONDARY
Check piston movement
NOTE:
• Apply oil to the pistons when reassembling.
• Bundle the rocker arms with rubber bands to
keep them together as sets.
2. Remove the lost motion assembly from the cylinder
head and inspect it. Pushing it gently with the finger
will cause it to sink slightly. Increasing the force on
it will cause it to sink deeper.
— If the lost motion assembly does not move
smoothly, replace it.
Push
LOST MOTION ASSEMBLY