Jaguar XJ (X350). Service manual — part 457

17 . Remove the primary timing chain tensioner guide.

18 . Remove the primary timing chain.

19 . Remove the primary timing chain tensioner guide.

20

.

CAUTION: Make sure the secondary timing chain and camshaft sprockets are free

to rotate.

Loosen the camshaft sprockets.

21 . Remove the oil pump.

Remove and discard the gasket.

Installation

1 . Install the oil pump.

Install a new gasket.

Tighten to 12 Nm.

www.

2

.

Install the special tool to the exhaust camshaft sprocket.

Reposition the camshaft sprockets for the most advantageous position for

use of the tool.

3 . Install the primary timing chain tensioner guide.

Tighten to 12 Nm.

4

.

CAUTION: Make sure the timing chain slack is on the tensioned side of the timing

chain.

Install the primary timing chain.

Install the primary chain over the crankshaft sprocket and the intake

sprocket.

5 . Install the primary timing chain tensioner guide.

Tighten to 12 Nm.

6

.

CAUTION: During timing chain tensioner compression, do not release the ratchet

stem until the timing chain tensioner piston is fully bottomed in its bore or damage to the

ratchet stem will result.

Using a suitable tool, hold the left-hand timing chain tensioner ratchet lock mechanism away

from the ratchet stem.

www.