Special tools
- Camshafts setting/locking tool – Jaguar No.303-530.
- Timing chain tensioning tool – Jaguar No.303-532.
- Crankshaft positioning tool – Jaguar No.303-645/303-531.
- Primary chain wedges – Jaguar No.303-533.
- Crankshaft pulley locking tool – Jaguar No.303-191/18G 1437.
- Crankshaft pulley remover – Jaguar No.303-588.
- Crankshaft pulley locking tool adapter – Jaguar No.303-191-02/18G 1437-2.
General precautions
- Disconnect battery earth lead.NOTE: On XK8/R models: Open both doors before disconnecting the battery to allow the windows to open slightly.
- 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
- WARNING: Do not use crankshaft positioning tool to remove/install crankshaft pulley.
- Remove crankshaft position (CKP) sensor from torque converter housing.
- Turn the crankshaft to align slot for crankshaft positioning tool [1] .
- Ensure that flats on RH camshafts are positioned upwards, if not turn crankshaft 360°.
- Fit crankshaft positioning tool [1] .NOTE: Ensure that the positioning tool engages with the slot in the trigger-ring.
- If fitted: Remove camshaft position actuators [2] and carriers [3] from cylinder heads.
- Fit RH camshafts setting/locking tool [4] .
- Slacken RH exhaust camshaft sprocket bolt [5] .
- Slacken RH intake camshaft sprocket bolt [6] .
- Remove RH timing chain tensioner [7] , blade [8] and guide [9] .
- Remove RH timing chains and sprockets.
- Remove RH camshafts setting/locking tool [4] .
- Fit LH camshafts setting/locking tool [4] .
- Slacken LH exhaust camshaft sprocket bolt [10] .
- Slacken LH intake camshaft sprocket bolt [11] .
- Remove LH timing chain tensioner [12] , blade [13] and guide [14] .
- Remove LH timing chains and sprockets.
- Remove camshaft coupling chain tensioners [15] .
Installation
- WARNING: Ensure that crankshaft sprockets are installed correctly .
- Ensure crankshaft positioning tool is installed [1] .
- Ensure LH camshafts setting/locking tool is installed [4] .
- Reset chain tensioners:
- Insert a thin wire to release the check valves [17] & [18] .
- Using hand pressure only, compress the tensioners.
- Fit LH camshaft coupling chain tensioner [15] .
- Fit LH camshaft coupling chain and sprockets. Do not tighten bolts.
- Fit LH timing chain. Do not tighten bolts.
- Fit LH timing chain tensioner [12] , blade [13] and guide [14] .
NOTE: Ensure that the oil gallery blanking plate is installed correctly.
- Fit one or two primary chain wedges to take up slack [19] .
- Using the timing chain tensioning tool, tension the LH exhaust sprocket anti-clockwise [20] .
- Tighten LH exhaust camshaft sprocket bolt [10] .
- Tighten LH intake camshaft sprocket bolt [11] .
- Remove primary chain wedges [19] .
- Remove LH camshafts setting/locking tool [4] .
- Fit RH camshafts setting/locking tool [4] .
- Fit RH camshaft coupling chain tensioner [15] .
- Fit RH camshaft coupling chain and sprockets. Do not tighten bolts.
- Fit RH timing chain. Do not tighten bolts.
- Fit RH timing chain tensioner [7] , blade [8] and guide [9] .
NOTE: Ensure that the oil gallery blanking plate is installed correctly.
- Fit one or two primary chain wedges to take up slack [19] .
- Using the timing chain tensioning tool, tension the RH exhaust sprocket anti-clockwise [20] .
- Tighten RH exhaust camshaft sprocket bolt [5] .
- Tighten RH intake camshaft sprocket bolt [6] .
- Remove primary chain wedges [19] .
- Remove RH camshafts setting/locking tool [4] .
- If fitted: Fit camshaft position actuators [2] and carriers [3] to cylinder heads.
- Fit crankshaft vibration damper. Use new bolt.