Engine Overhaul Manual v8 4.0 4.6: OVERHAUL
Also for this vehicle: 300Tdi Engine, V8 Engine 3.5 3.9 4.2.
Fitted to: Land Rover Discovery II (NAS), Land Rover Discovery II (UK), Land Rover Defender V8i Workshop Manual Supplement, Land Rover Defender 90 Workshop Manual (NAS), Land Rover Range Rover P38.
Engine
General
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- ROCKER SHAFTS
- Rocker shafts - remove
- Rocker shafts - dismantling
- Inspecting components
- Rocker shafts - assembling
- Rocker shafts - refit
- CYLINDER HEAD
- Cylinder head - remove
- Valves and springs - remove
- Cylinder head - inspection
- Valves, valve springs and guides - inspection2
- Valve guides - renew
- Valve seat inserts - inspection
- Valve seat inserts - renew
- Valve seats and seat inserts - refacing
- Valves - lapping-in
- Engines fitted with secondary air injection (SAI)
- Valves and springs - refit
- Cylinder head - refit
- TIMING CHAIN AND GEARS
- Sump - remove
- Timing cover - remove2
- Timing gears - remove
- Timing chain and gears - inspection
- Timing gears - refit
- Timing cover - refit2
- Sump - refit23
- OIL PUMP
- Oil pump - remove
- Oil pressure by-pass valve - remove
- Oil pressure relief valve - remove
- Oil pump - inspection
- Oil pressure by-pass valve - inspection
- Oil pressure relief valve - inspection
- Oil pump - refit
- Oil pressure by-pass valve - refit
- Oil pressure relief valve - refit
- CAMSHAFT AND TAPPETS
- Camshaft end-float - check
- Camshaft and tappets - remove
- Camshaft and tappets - inspection
- Camshaft and tappets - refit
- PISTONS, CONNECTING RODS, PISTON RINGS AND CYLINDER BORES
- Pistons and connecting rods - remove
- Piston rings - remove
- Piston rings - inspection
- Pistons - remove
- Pistons - inspection
- Gudgeon pins - inspection
- Cylinder liner bore - inspection
- Pistons - refit
- Piston to cylinder bore clearance - checking
- Pistons and connecting rods - refit
- FLYWHEEL AND STARTER RING GEAR
- Flywheel - remove
- Flywheel and starter ring gear - inspection
- Starter ring gear - renew
- Flywheel - refit
- DRIVE PLATE AND RING GEAR ASSEMBLY
- Drive plate and ring gear assembly - remove - Drive plates fitted with shimmed hub aligner
- Drive plate and ring gear assembly - remove - Drive plates fitted with unshimmed hub aligner or modified ’one-piece’ starter rin
- Drive plate and ring gear - inspection
- Drive plate and ring gear assembly - refit - Drive plates fitted with shimmed hub aligner
- Drive plate and ring gear assembly - refit - Drive plates fitted with unshimmed hub aligner or modified ’one-piece’ starter ring
- CRANKSHAFT, MAIN AND BIG-END BEARINGS
- Big-end bearings - remove
- Big-end bearings - refit
- Crankshaft - remove
- Knock sensor - remove
- Crankshaft position sensor - remove
- Crankshaft - inspection2
- Crankshaft spigot bearing - renew
- Crankshaft - refit2
- Crankshaft end - float - check
- Knock sensor - refit
- Crankshaft position sensor - refit