Withdrawal
cylinder head installed. Remove toothed belt, toothed belt drive with hydraulically damped tensioning roller, toothed belt drive with friction damped tensioning roller. Remove retainer -3359-. Remove bolts -1- and remove camshaft sprocket from bushings.
Loosen the bolt -1- of the bushing using the socket wrench -T10051-. Then loosen the bolt about 2 turns.
Position puller -T10052- on bushing and screw in screws. Remove the sleeve from the camshaft, to do this, hold the puller by the hexagon (SW 30) and screw in bolt -2-. Remove the bushing from the camshaft cone. Remove cylinder head cover.
Loosen the outer and then the inner bolts on the rocker shaft and remove the rocker shaft. Remove tandem pump. First remove bearing caps -2- and -3-. Then loosen bearing caps -1- and -4- alternately and crosswise. Bearing cap -4- is marked as bearing cap -5-. Make sure that the camshaft bearing shells are not interchanged. Mark on the rear side the alignment of the camshaft bearing shells with a waterproof felt-tip pen. Remove distributor..
Installation
Install in reverse order; note the following: Crankshaft sprocket must be secured with crankshaft stop -T10050-. Markings for sprocket and crankshaft stop -arrow- must be opposite each other. In this case, the pin of the crankshaft stopper must enter the seal hole. flange.
Instruction. Make sure that already working camshaft bearing shells are not mixed up in places (take note of the label).
When installing the camshaft, check the correct position of the locking lugs of the bearing shells in the bearing caps and cylinder head. Lubricate the running surfaces of the camshaft with oil. Set the camshaft in position "TDC" cylinder 1. Camshaft lobes of cylinder 1 must point upwards -arrows-. Tighten bearing caps -2- and -3- alternately and crosswise.
Apply a thin coat of sealant evenly to surfaces of bearing caps -1- and -4-.
Bearing cap -4- is marked as bearing cap -5-. Make sure that the sealant does not get into the grooves -arrows- and onto other surfaces. Fit bearing caps -1- and -4- and tighten down as well. The bearing cover -4- must be flush with the outer plane of the cylinder head, as otherwise the tandem pump may leak. Install the camshaft seal. Install the rocker shaft and tighten first the inner and then the outer bolts in several stages. Install the bushing on the camshaft. Tighten bolt -1- using the spanner -T10051-. Install the camshaft sprocket on the bushing. The toothed sector -arrow- of the camshaft sprocket must point upwards. Screw in bolts -1- not completely. Secure camshaft bushing with tool -3359-.
Install toothed belt (adjust valve timing): Toothed belt drive with hydraulically damped tensioning roller, Toothed belt drive with friction damped tensioning roller. Install tandem pump. In case of replacement of the rocker shaft or ball head bolts and set bolts, the position of the unit injector module must be adjusted. Install cylinder head cover.
Instruction. After installing the camshaft, the engine must not be started for about 30 minutes. Hydraulic tappets must be deposited (otherwise the valves will come into contact with the pistons). After working on the valve train, rotate the engine by hand at least 2 revolutions to make sure that no valve is in contact with the piston.
Tightening torques:
- Bearing cap to cylinder head: 8 Nm + 90°1)
- Rocker arm axle to cylinder head: 20 Nm + 90°1)
- Sleeve to camshaft: 100 Nm
1) Replace bolts.
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