Discovery I (LJ) V8-4.0L (1996)
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3. Check alignment of connecting rods.
Pistons - refit
CAUTION: Pistons have a 0.5 mm (0.02 in) offset gudgeon pin which can be identified by an arrow mark on the piston crown. This arrow
MUST always point to the front of the engine.
1. 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 dome shaped boss for LH bank of cylinders.
2. Clamp hexagon body of LRT-12-013 in vice.
3. Slacken large nut and pull the centre screw 50.8 mm (2.0 in) out of hexagon body.
4. Locate remover/replacer adapter LRT-12-126/2 with its long spigot inside bore of hexagon body.
5. Fit remover/replacer adapter LRT-12-126/3 with cut-out towards piston, up to shoulder on centre screw.
6. Lubricate gudgeon pin and bores of connecting rod and piston with graphited oil.
7. Locate connecting rod and piston to centre screw with connecting rod entered on sleeve up to groove.
8. Fit gudgeon pin on to centre screw and into piston bore up to connecting rod.
9. Fit remover/replacer bush LRT-12-126/1 with flanged end towards gudgeon pin.
10. Screw the stop nut onto centre screw and position piston against cut-out of adapter LRT-12-126/3.
11. Lubricate centre screw threads and thrust race with graphited oil, screw large nut up to LRT-12-013.
12. Lock the stop nut securely with lockscrew.
13. Set torque wrench to 16 Nm (12 ft. lbs.), and using socket on large nut, pull gudgeon pin in until flange of LRT-12-126/1 is distance A from face
of piston.
Distance A = 0.4 mm (0.016 in).
CAUTION: If torque wrench breaks during above operation, fit of gudgeon pin to connecting rod is not acceptable and components
must be replaced. The centre screw and thrust race must be kept well lubricated throughout operation.
14. Dismantle tool, remove piston, check no damage has occurred during pressing and piston moves freely on gudgeon pin.
15. Repeat above operations for remaining pistons.
Piston to cylinder bore clearance - checking
1. Starting with number 1 piston, invert piston and with arrow on piston crown pointing towards REAR of cylinder block, insert piston in cylinder
