Freelander Service Procedures
ENGINE - K SERIES KV6
12-3-78 OVERHAUL
2. Cylinder liners have their bore/grade and step
height determined at manufacture. The bore/
grade, red, blue (A) or (B), and step heights V
or Z together with the cylinder liner part number
and colour code are marked on the external
diameter of the cylinder liners. If cylinder(s) are
to be replaced, the replacement liner(s) must
have the same step height as the original
liner(s). Both step heights are available in red
(A) and blue (B) grades of cylinder liners.
3. Check pistons for distortion and cracks.
NOTE: Piston grades A or B are stamped on
the crown of the piston.
4. Piston diameter check: Measure piston
diameter at right angles to gudgeon pin and 8
mm (0.3 in) from bottom of skirt.
NOTE: Piston and connecting rods are only
supplied as an assembly.
CAUTION: Ensure pistons are retained with
their respective cylinder liners.
5. Position piston in cylinder liner and measure
clearance 20 mm (0.75 in) from bottom of
cylinder liner.
6. Piston ring gap: Position new top and second
compression piston rings 20 mm (0.75 in) from
top of cylinder bore and measure ring gaps.
CAUTION: Ensure piston rings are kept
square to liner bore. Retain rings with the
piston fitted to the liner in which they were
checked.
7. Piston rings - refit:Using a suitable expander,
fit oil control spring.
8. With 'TOP' or identification markings to top of
piston, use an expander to fit piston rings in
sequence; oil control, 2nd and top
compression.
NOTE: The second compression ring is
stepped.
M12 6838
