Subsection 08 (TOP END)
vmr2006-043-016_a
1. Rocker arm shaft
2. Rocker arm (exhaust side)
3. Rocker arm (intake side)
4. Adjustment screw
5. Lock nut
5. Remove rocker arm assembly (exhaust side
and intake side) with adjustment screws and
lock nuts.
6. Remove thrust washers.
tmr2011-013-010_a
1. Rocker arm (exhaust side)
2. Rocker arm (intake side)
3. Thrust washers
NOTICE
Pay attention not to lose thrust
washers or drop them into the timing chain
compartment.
2
R400m
o
tr67A
4
1
1
3
1. 2 thrust washers
2. Rocker arm (exhaust side)
3. Cylinder head (spark plug side)
4. Big taper to spark plug side
Inspecting the Rocker Arm
Inspect each rocker arm for cracks and scored fric-
tion surfaces. If so, replace rocker arm assembly.
Check the rocker arm rollers for free movement,
wear and excessive radial play. Replace rocker
arm assembly if necessary.
1
R400m
o
tr68A
A
2
1. Rocker arm (exhaust side)
2. Roller
A. Bore for rocker arm shaft
Measure rocker arm bore diameter. If diameter
is out of specification, change the rocker arm as-
sembly.
ROCKER ARM BORE DIAMETER
NEW
12.036 mm to 12.050 mm
(.4739 in to .4744 in)
SERVICE LIMIT
12.060 mm (.4748 in)
Check adjustment screws for free movement,
cracks and/or excessive play.
8
vmr2016-419