Subsection 08 (TOP END)
R400m
o
tr69A
1
1. Free movement of adjustment screw top
Inspecting the Rocker Arm Shaft
Check for scored friction surfaces; if so, replace
parts.
Measure rocker arm shaft diameter.
R400m
o
tr70A
A
A. Measure rocker arm shaft diameter here
ROCKER ARM SHAFT DIAMETER
NEW
12.000 mm to 12.018 mm
(.4724 in to .4731 in)
SERVICE LIMIT
11.990 mm (.472 in)
Any area worn excessively will require parts re-
placement.
Installing the Rocker Arm
NOTE:
Use the same procedure for exhaust and
intake rocker arm.
1. Apply engine oil on rocker arm shaft.
2. Insert a rocker arm shaft with the chamfered
edge first through rocker arm pin bore.
3. Install a thrust washer at timing chain side, then
the proper rocker arm (exhaust side or intake
side).
4. Push in rocker arm shaft until its chamfer
reaches the end of rocker arm bore.
vmr2006-043-016_b
1. Rocker arm shaft
2. Thrust washer (timing chain side)
3. Thrust washer (spark plug side)
5. Place the other thrust washer and push rocker
arm shaft to end position.
6. Install the camshaft retaining plate.
7. Adjust valve clearance, refer to
PERIODIC
MAINTENANCE PROCEDURES
subsection.
CAMSHAFT
NOTE:
The engine is equipped with two different
camshafts.
vmr2015-032-001_a
1. Intake cam
2. Exhaust cam
3. Camshaft of cylinder 1
4. Camshaft of cylinder 2
5. Flat spot
Removing the Camshaft
The removal procedure is the same for both
camshafts.
vmr2016-419
9
