Jaguar XJ (X350). Service manual — part 459
17
.
NOTE:
The timing chain tensioner piston should retract with minimal force. If binding occurs,
reposition the timing chain tensioner to eliminate side loading.
Slowly compress the right-hand timing chain tensioner.
18
.
NOTE:
The retaining tool must remain in the timing chain tensioner until the timing chain
tensioner is installed to the engine with the piston bottomed in the bore.
Using a suitable tool, retain the right-hand timing chain tensioner piston.
19 . Install the primary timing chain tensioner assembly.
Tighten to 12 Nm.
20 . Release the tension in the right-hand timing chain tensioner.
Remove the retaining tool.
21
.
CAUTION: While applying the opposing force to sprocket and chain, tighten the
sprocket bolt.
Using the special tool, apply force to the tool in an anti-clockwise direction to tension the
primary timing chain on its drive side.
Tighten to 120 Nm.
22
.
CAUTION: While applying the opposing force to sprocket and chain, tighten the
sprocket bolt.
Using the special tool, apply force to the tool in an anti-clockwise direction.
Tighten to 120 Nm.
23 . Remove the special tool to the right-hand cylinder head.
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24 . Remove the special tool to the left-hand cylinder head.
25 . Install the left-hand variable camshaft timing oil control unit housing.
Install new O-ring seals.
Tighten to 22 Nm.
26 . Install the right-hand variable camshaft timing oil control unit housing.
Install new O-ring seals.
Tighten to 22 Nm.
27
.
Install the engine front cover.
For additional information, refer to Engine Front Cover - VIN Range: G45704->G99999
(12.65.01)
28 . Remove the special tool.
29 . Install the CKP sensor.
Tighten to 10 Nm.
30 . Connect the CKP sensor electrical connector.
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