Engine Components Inspection And Service; Cylinder Head Cover - Suzuki TU250X Service Manual

ENGINE COMPONENTS INSPECTION
AND SERVICE

Identify the position of each removed part. Organize
the parts in their respective groups (i.e., intake or
exhaust) so that they can be installed in their original
locations.

CYLINDER HEAD COVER

DISASSEMBLY
• Remove the rocker arm shafts 1.
• Remove the rocker arms 2 and wave washers 3.
CYLINDER HEAD COVER DISTORTION
After removing sealant from the fitting surface of the cylinder
head cover, place the cylinder head cover on a surface plate
and check for distortion with the thickness gauge.
If the distortion exceeds the limit, replace the cylinder head
cover.
 Cylinder head cover distortion
Service Limit: 0.05 mm (0.002 in)
 09900-20803: Thickness gauge
ROCKER ARM SHAFT O.D.
Measure the diameter of the rocker arm shafts.
 Rocker arm shaft O.D.
Standard (IN. & EX.):
11.983 – 11.994 mm (0.4718 – 0.4722 in)
 09900-20205: Micrometer (0 – 25 mm)
ROCKER ARM I.D.
Measure the inside diameter of the rocker arm and check the
wear of the camshaft contacting surface.
 Rocker arm I.D.
Standard (IN. & EX.):
12.000 – 12.018 mm (0.4724 – 0.4731 in)
 09900-20605: Dial calipers (10 – 34 mm)
ENGINE 3-25