Rocker Shafts, Rocker Arms
Rocker Shaft and Rocker Arm Removal
Rocker Case (see Rocker Case Removal)
Rocker Shafts [A]
Rocker Arms [B]
Rocker Shaft and Rocker Arm Installation
Apply molybdenum disulfide oil solution to the rocker
The rocker shafts are identical.
Insert the rocker shafts into the rocker case and rocker
arms so that the notches [A] face to the plug hole side
Align the M8 bolt holes [C] of the rocker case and the
notches of the rocker shaft.
Rocker Arm Assembly
Prepare a flat-end bar [A] and a block [B] with a recess
Press the oil chamber [D] for the HLA into the rocker arm
end [E] until the chamber end is even with the step [F] of
Install the oil chamber so that the air bleed hole [G] is
placed as shown. This makes HLA bleeding easier.
Rocker Shaft Diameter Measurement
Remove the rocker shaft (see Rocker Shaft and Rocker
Measure the diameter [A] of the rocker shaft where the
rocker arm pivots on it with a micrometer.
If the rocker shaft diameter is smaller than the service
limit, replace it. Also check the rocker arm inside diameter
(see Rocker Arm Inspection).
Rocker Shaft Diameter
15.976 ∼ 15.994 mm (0.6289 ∼ 0.6296 in.)
Service Limit: 15.95 mm (0.6279 in.)
ENGINE TOP END 5-23