Discovery II (LT) V8-4.6L (2003)
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2. Assemble pistons to connecting rods with arrow on piston pointing towards domed shaped boss on connecting rod for RH bank of cylinders and
arrow pointing away from domed shaped boss for LH bank of cylinders.
3. Clamp hexagon body of tool LRT-12-013 in vice.
4. Loosen large nut and pull the center screw 50 mm (2 in) out of hexagon body.
5. Locate piston adapter tool LRT-12-126/2 with its long spigot inside bore of hexagon body.
6. Fit remover/replacer tool LRT-12-126/3, with groove towards piston, up to shoulder on center screw.
7. Lubricate gudgeon pin and bores of connecting rod and piston with graphite oil.
8. Locate connecting rod and piston to center screw with connecting rod entered on sleeve up to groove.
9. Fit gudgeon pin on to center screw and into piston bore up to connecting rod.
10. Fit remover/replacer tool LRT-12-126/1 with flanged end towards gudgeon pin.
11. Screw the stop nut on to center screw and position piston against groove of tool LRT-12126/3.
12. Lubricate center screw threads and thrust race with graphite oil, screw large nut up to tool LRT-12-013.
13. Lock the stop nut securely with lock screw.
14. Set torque wrench to 16 Nm (12 ft. lbs.) and using socket on large nut, pull gudgeon pin in until flange of tool LRT-12-126/1 is O.40mm (O.016
in), dimension 'A' from face of piston. If torque is exceeded during this procedure, fit of gudgeon pin to connecting rod is not acceptable and
components must be replaced.
CAUTION: The center screw and thrust race must be kept well lubricated throughout the operation.
15. Dismantle tool, remove piston and check no damage has occurred during pressing and that piston moves freely on gudgeon pin.
16. Remove compression rings, oil control rails and expander from new piston.
17. Invert piston and with arrow pointing towards rear of cylinder block, insert piston into cylinder liner.
18. Position piston with bottom of skirt 30 mm (11.12 in) from top cylinder liner.
