Manufacturer: Land Rover
Model: Discovery 4 (09-) 5,0
Engine code: 508PN
Output: 276 (375) 6500
Tuned for: R-Cat
Year: 2009-14
Special tools
- Camshaft alignment tools – No.303-1445.
- Camshaft turning tools – No.303-1452.
- Crankshaft pulley bolt socket – No.303-1438.
- Crankshaft pulley holding tool – No.303-1437.
- Crankshaft pulley removal/installation tool 1 – No.303-1439.
- Crankshaft pulley removal/installation tool 2 – No.303-1440.
- Crankshaft pulley removal/installation tool 3 – No.303-1441.
- Crankshaft timing pin (crankshaft position (CKP) sensor aperture) – No.303-1447.
- Flywheel/drive plate locking tool (starter motor aperture) – No.303-1448
- Timing chain pre-tensioning tool – No.303-1482.
General precautions
- Disconnect battery earth lead.
- Remove spark plugs to ease turning engine.
- Turn engine in normal direction of rotation (unless otherwise stated).
- Observe tightening torques.
- If fitted: Mark position of crankshaft position (CKP) sensor before removal.
- Do NOT turn crankshaft via camshaft or other sprockets.
- Do NOT turn crankshaft or camshaft with timing chain removed.
Valve timing procedures Removal
- Remove crankshaft position (CKP) sensor.
- Turn crankshaft in direction of engine rotation until crankshaft timing pin can be installed [1] .
- Ensure crankshaft sprocket keyway at 6 o’clock position [2] .
NOTE: If crankshaft sprocket keyway at 9 o’clock position, replace drive plate.
- Ensure groove in rear of camshafts positioned as shown [3] .
- Remove RH bank timing chain tensioner and tensioner blade.
- Slacken bolts of each RH bank camshaft adjuster [4] .
- Remove RH bank camshaft adjusters and timing chain.
- Remove LH bank timing chain tensioner and tensioner blade.
- Slacken bolts of each LH bank camshaft adjuster [5] .
- Remove LH bank camshaft adjusters and timing chain.
NOTE: Crankshaft sprocket friction washers MUST be replaced [6] .
Installation
- Ensure crankshaft timing pin correctly fitted [1] .
- Ensure crankshaft sprocket keyway at 6 o’clock position [2] .
- Ensure groove in rear of camshafts positioned as shown [3] .
Install camshaft turning tools to front of LH bank camshafts [7] .
- Install camshaft alignment tool to rear of LH bank camshafts [8] .
- Ensure camshaft alignment tool engages in end of camshafts. Secure tool with bolts [9] . Finger tighten bolts.
- Rock camshafts slightly to ensure camshaft alignment tool located correctly.
- Remove camshaft turning tools [7] .
- Install camshaft turning tools to front of RH bank camshafts [7] .
- Install camshaft alignment tool to rear of RH bank camshafts [8] .
- Ensure camshaft alignment tool engages in end of camshafts. Secure tool with bolts [9] . Finger tighten bolts.
- Rock camshafts slightly to ensure camshaft alignment tool located correctly.
- Lock LH and RH bank timing chain tensioners in retracted position:
NOTE: There are two types of tensioner.
- Tensioner type A:
- Push plunger into tensioner body in direction of arrow [10] .
- Insert a suitable pin into tensioner body to lock tensioner plunger in position [11] .
- Tensioner type B:
- Turn tensioner pawl fully clockwise [12] .
- Push plunger into tensioner body in direction of arrow [13] .
- Turn tensioner pawl fully anti-clockwise [12] .
- Insert a suitable pin into tensioner body to lock tensioner plunger in position [14] .
- Install LH bank camshaft adjusters and timing chain as an assembly. Finger tighten bolts.
- Ensure coloured or painted chain links aligned with timing marks on each camshaft adjuster and chain guide [15] , [16] & [17] .
- Install LH bank timing chain tensioner and tensioner blade.
- Install RH bank camshaft adjusters and timing chain as an assembly. Finger tighten bolts.
- Ensure coloured or painted chain links aligned with timing marks on each camshaft adjuster and chain guide [18] , [19] & [20] .
- Install RH bank timing chain tensioner and tensioner blade.
- Remove pin to release timing chain tensioner plunger [11] & [14] .
- Install timing chain pre-tensioning tool to LH bank inlet camshaft adjuster [21] .
- Apply a pre-tensioning torque of 35 Nm.
- Tighten LH bank exhaust camshaft adjuster bolts. Tightening torque: 32 Nm.
- Tighten LH bank inlet camshaft adjuster bolts. Tightening torque: 32 Nm.
- Remove timing chain pre-tensioning tool [21] .
- Install timing chain pre-tensioning tool to RH bank exhaust camshaft adjuster [22] .
- Apply a pre-tensioning torque of 35 Nm.
- Tighten RH bank inlet camshaft adjuster bolts. Tightening torque: 32 Nm.
- Tighten RH bank exhaust camshaft adjuster bolts. Tightening torque: 32 Nm.
- Remove timing chain pre-tensioning tool [22] .
- Remove camshaft alignment tools [8] .
- Remove crankshaft timing pin [1] .
- Fit flywheel/drive plate locking tool [23] .
- Temporarily fit crankshaft pulley bolt with M16 washer. Tightening torque: 50 Nm.
- Remove flywheel/drive plate locking tool [23] .
- Turn crankshaft two turns clockwise.
- Fit flywheel/drive plate locking tool [23] .
- Remove crankshaft pulley bolt.
- Remove flywheel/drive plate locking tool [23] .
- Turn crankshaft in direction of engine rotation until crankshaft timing pin can be installed [1] .
- Ensure camshaft alignment tools can be fitted [8] . If not, repeat timing chain installation.
- Remove camshaft alignment tools [8] .
- Remove crankshaft timing pin [1] .
- There are two types of crankshaft pulley bolt:
- Bolt classification – 10.9 (RH thread).
- Bolt classification – 12.9 (LH thread).
- Tighten crankshaft pulley bolt. Use new bolt. Tightening torque: 200 Nm + 270°.Hope the information will be usefull!
