Lower

Timing Chain Tensioner, Lower; Renew

- Remove the timing cover.




- Remove the upper timing chain (6 Fig. 1) and remove the flanged bolts (3 Fig. 1) securing the tensioner pedestal.

- Remove the pedestal / tensioner assembly and chain damper (1 Fig. 1).

- Remove the tensioner pivot pin (2 Fig. 1) and remove the tensioner from the pedestal.

- Remove the bolts (11 Fig. 1) securing the lower timing chain tensioner, and remove the tensioner assembly (10 Fig. 1).

- Remove the lower timing chain (8 Fig. 1).




- Clean the lower tensioner assembly, remove the ball valve (1 Fig. 2) and ensure that the base of the housing (2 Fig. 2) is clean.

- Check that the ball valve is free by shaking the assembly to ensure it rattles. If it does not, renew the valve assembly. If it does, renew and lubricate the `O' ring (3 Fig. 2) and press the valve back into the housing. The ball free movement is 0.45-0.74 mm.

- Inspect the housing and the hydraulic tensioner piston (4 Fig. 2) for excessive wear or scoring. Also check that the oil hole (5 Fig. 2) is clear in the end of the piston.

- Lubricate the component parts with clean engine oil. Assemble the tensioner by pressing and twisting the snail clockwise until the pawl locks in the `park' position. Fit the tensioner assembly to the cylinder block with the guide facing downwards.

- Fit but do not tighten the tensioner upper securing bolt, push the guide into the housing to release the base and align with the damper.

- Align the damper with the lower bolt hole, fit and tighten the lower bolt.

- Tighten the upper bolt, fill the tensioner oil reservoir with oil and work the tensioner to prime with oil.

- Fit the upper tensioner to the pedestal and fit the tensioner pivot pin, and secure with the flanged bolts (6 Fig 2).

- Fit the lower static damper, and secure with the flanged bolts.