30/ENGINE - WORK ON INDIVIDUAL PARTS 133
19.19Checking timing assembly
300113-01
– Clean all parts well.
– Check the timing chain gear / timing chain sprocket for damage and wear.
» If there is damage or wear:
– Replace the timing chain gear / timing chain sprocket.
– Check timing chain tensioning rail for damage and wear.
» If there is damage or wear:
– Change the timing chain tensioning rail.
– Check timing chain guide rail for damage and wear.
» If there is damage or wear:
– Change the timing chain guide rail.
– Check timing chain securing guide for damage and wear.
» If there is damage or wear:
– Replace the timing chain securing guide.
– Check timing chain for damage and wear.
» If there is damage or wear:
– Change the timing chain.
– Check that the timing chain links move easily. Let the timing chain hang down
freely.
» If the chain links no longer straighten out:
– Change the timing chain.
19.20Removing rocker arm
300113-10
– Remove screws .
300114-10
– Screw a suitable screw into the rocker arm shafts . Pull out the rocker arm
shafts.
– Take off the rocker arm .
19.21Changing camshaft bearing
– Remove the rocker arm. ( p. 133)
300226-10
– Clamp the cylinder head.
Clamping plate (75029050000) ( p. 252)
– Remove the large camshaft bearing using the special tool .
Push-out drift (75029051000) ( p. 252)