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Home >> Land Rover >> 2010 >> LR4 (LA) V6-4.0L >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Service and Repair >> Overhaul >> Engine Disassembly

Engine Disassembly






Engine

Special Service Tools






Timing Setting tool

303-645





Camshaft setting/locking tool

303-530





Adapter - Crankshaft seal installer

303-1100-01





Adapter

303-191-03





Holding Tool Crankshaft Pulley

303-893(LRT-12-080)





Bolts and spacers

303-191-04





Timing chain tensioning tool

303-532

Disassembly
1 Remove the engine assembly.
2 Secure the engine to the engine stand.
- Align the engine to the engine stand.
- Adjust the engine stand legs into position.
- Mount the engine to an engine stand.
- Fully tighten the engine stand leg nuts.




3 Release the camshaft position (CMP) sensor connector block from the intake manifold assembly.




4 Remove the coolant manifold.
- Remove the 4 bolts.
- Disconnect the electrical connector.




5 Position the wiring harness support bracket aside for access.
- Remove the 2 bolts.




6
NOTE:
RH illustration shown, LH is similar.
Remove both the ignition coil-on-plug covers.
- Release from the 2 clips.




7
NOTE:
RH illustration shown, LH is similar.
Disconnect the 8 ignition coil-on-plug electrical connectors.




8 Remove the 8 ignition coil-on-plugs.
- Remove the 8 bolts.




9 Disconnect the valve cover breather hose.
- Disconnect the variable camshaft timing (VCT) oil control solenoid electrical connector.
- Repeat the operation for the other side.





10 Disconnect the engine coolant temperature (ECT) sensor electrical connector.





11 Disconnect the CMP sensor electrical connector.
- Repeat the above procedure for the RH side.





12 Disconnect the cylinder head earth connector.
- Remove the bolt.
- Release the 3 clips.

13 Disconnect the knock sensors (KS) electrical connector.





14 Release the purge valve from the mounting bracket.
- Disconnect the quick release connector.
- Disconnect the electrical connector.
- Remove the bolt.





15 Release the 5 air conditioning (A/C) harness retaining clips.





16 Remove the crankshaft position (CKP) sensor.
- Disconnect the electrical connector.
- Remove the Torx screw.





17 Remove the power steering pump mounting bracket.
- Remove the 3 bolts.
- Release the transmission cooler pipe clips.





18 Remove the A/C compressor mounting bracket.
- Remove the 2 bolts.





19 Disconnect the starter motor connector.





20 Disconnect the oil temperature and oil pressure sensors.





21 Disconnect the generator connector.





22 Release the 4 clips securing the generator harness.





23 Remove the 10 intake manifold bolts.





24
CAUTION: Before the disconnection or removal of any components, ensure the area around joint faces and connections are clean. Plug any open connections to prevent contamination.
Remove the intake manifold.
- Disconnect the brake booster vacuum hose from the intake manifold.
- Discard the gaskets.
- Disconnect the manifold absolute pressure (MAP) sensor electrical connector.





25 Remove the accessory drive belt idler pulley.
- Remove the bolt.





26 Remove the coolant pump pulley.
- Remove the 3 bolts.





27 Remove the coolant pump.





28 Remove the generator.
- Disconnect the electrical connector.
- Remove the 3 bolts.





29 Remove the generator mounting bracket.
- Remove the 4 bolts.





30 Remove the oil level indicator and tube.
- Remove the nut.
- Discard the O-ring seal.





31 Remove the RH valve cover.
- Remove the 14 valve cover retaining bolts.
- Remove and discard the valve cover gasket.
- Remove and discard the valve cover plug aperture seals.
- Repeat the operation for the LH side.





32 Remove the engine front cover.
- Release the engine wiring harness clips.
- Remove the 24 bolts.
- Remove and discard the gasket.

33 Rotate the crankshaft until the flats on the camshafts are parallel with the cylinder head joint faces.





34
NOTE:
The engine is now in the SAFE position.
Lock the crankshaft.
- Install the special tool.
- Install the screw.





35 Remove the RH VCT control unit.
- Remove the 3 bolts.
- Remove and discard the O-ring seals.





36 Install the special tool to the RH cylinder head.
- Install the 3 bolts.





37 Remove the RH primary timing chain tensioner assembly.
- Remove the 2 bolts.





38 Remove the RH primary timing chain tensioner guide.
- Remove the bolt.





39 Remove the RH primary timing chain.





40 Remove the LH VCT control unit.
- Remove the 2 bolts.
- Remove the nut.
- Remove and discard the O-ring seals.





41 Install the special tool to the LH cylinder head.
- Install the 3 bolts.





42 Remove the LH primary timing chain tensioner.
- Remove the 2 bolts.





43 Remove the LH upper and lower primary timing chain tensioner guides.
- Remove the stud.
- Remove the bolt.

44 Remove the LH primary timing chain.





45
CAUTION: Discard the bolts.
Remove the camshaft sprockets.
- Remove the 2 bolts.





46 Remove the secondary timing chain tensioner and the secondary timing chain.
- Remove the 2 bolts.





47 Remove the special tool from the LH cylinder head.
- Remove the 3 bolts.





48
CAUTION: Evenly and progressively, release the camshaft bearing caps.
NOTE:
Remove the camshaft bearing caps. Note: their position, orientation and markings. Each is marked with its position (number) and an orientation (arrow).
Remove the camshaft bearing caps.
- Remove the 20 bolts.

49 Remove the camshafts.





50 Install the special tool to the RH cylinder head.
- Install the 3 bolts.





51
CAUTION: Discard the bolts.
NOTE:
LH illustration shown, RH is similar.
Remove the camshaft sprockets.
- Remove the 2 bolts.





52
NOTE:
LH illustration shown, RH is similar.
Remove the secondary timing chain tensioner and the secondary timing chain.
- Remove the 2 bolts.





53
CAUTION: Evenly and progressively, release the camshaft bearing caps.
NOTE:
Remove the camshaft bearing caps. Note: their position, orientation and markings. Each is marked with its position (number) and an orientation (arrow).
NOTE:
LH illustration shown, RH is similar.
Remove the camshaft bearing caps.
- Remove the 20 bolts.





54
CAUTION: Vehicles fitted with Polydrive cylinder head bolts, the cylinder head bolts must be removed using a 10 mm Polydrive socket or a 10 mm Allen key. Failure to follow this instruction may result in damage to the component.
CAUTION: The bolts can only be used twice, mark the bolts with a center punch. If two punch marks are visible, discard the bolts.
Remove the LH cylinder head assembly.
- Remove the 12 cylinder head bolts.
- With assistance remove the cylinder head.
- Remove and discard the cylinder head gasket.
- Clean the cylinder head locating dowels.
- Clean the component mating faces.
- Repeat the operation for the RH side.





55 Remove 4 bolts securing the engine mount bracket to the cylinder block.





56
CAUTION: Note the position of the bolt.
Remove the starter motor.
- Remove the remaining starter motor bolt.





57 Remove the KS.





58 Remove the flexplate.
- Remove and discard the 8 bolts.





59
NOTE:
Some variation in the illustrations may occur, but the essential information is always correct.
Remove the oil pan.
- Remove the 18 bolts.
- Clean all the mating faces and reusable parts thoroughly and check for damage.





60 Remove the oil strainer pick-up assembly.
- Remove the 2 bolts.
- Remove and discard the O-ring seal.





61 Remove the baffle plate.
- Remove the 6 bolts.





62 Remove the oil pump assembly.
- Remove the 4 bolts.
- Remove and discard the gasket.
- Clean the component mating faces.

63 Remove the engine from the engine stand.
- With assistance, remove the engine block from the stand.

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