Replacing Camshafts Seal

Replacing camshafts seal

Special tools:
999 5199 COUNTERHOLD 999 5199 Counterhold
999 5449 PUNCH 999 5449 Punch
999 5450 PUNCH 999 5450 Punch
999 5451 ADJUSTMENT TOOL 999 5451 Adjustment Tool
999 5452 CAMSHAFT ADJUSTMENT TOOL 999 5452 Camshaft Adjustment Tool
999 5919 PULLER 999 5919 Puller

Note! Rear seal: Rear seal

Front seal

Remove:




- spark plugs cover
- two fuel lines clamps
- lift expansion tank place over engine to one side
- front timing cover
- right front wheel
Remove right fender liner to expose the vibration damper.

Turn engine crankshaft clockwise




The camshaft pulleys should rotate until all the markings correspond.

Remove upper timing cover.

Remove the timing belt




Mark up camshaft pulleys (both inlet and outlet).

Remove:
- tensioner damping unit
- timing belt, turn to one side
- the camshaft pulleys, use counterhold 999 5199 COUNTERHOLD 999 5199 Counterhold

Remove and install new camshaft seal




Remove camshaft seal/seals

Lubricate and install a new seal with drift 999 5449 PUNCH 999 5449 Punch , use a copper mallet. (Drift 999 5449 PUNCH 999 5449 Punch of the later version is made of plastic.)

Note! Later version sealing rings are removed with an extractor 999 5919 PULLER 999 5919 Puller , because of the reduced space between the camshaft and sealing ring reinforcement.

Remove:




- air cleaner (ACL) housing, with hoses
- distributor cover, rotor, holder
- camshaft position (CMP) sensor housing and damper
- engine cooling fan (FC)
- starter motor

Note! Connectors and hoses for solenoid valve on the air cleaner housing (ACL).

Install camshaft adjustment tool 999 5451, 999 5452




Remove blind cover plug and install adjustment tool 999 5451 ADJUSTMENT TOOL 999 5451 Adjustment Tool for the crankshaft, turn the crankshaft counter-clockwise until it stops against the drift.

Install camshaft adjustment tool 999 5452 CAMSHAFT ADJUSTMENT TOOL 999 5452 Camshaft Adjustment Tool in the rear edge of camshafts and the extensions.

Install:




- the camshaft pulleys with two screws so that they precisely act on the pulleys
- tensioner damping unit
- timing belt

Note! Check that the camshaft screw holes are centered, see illustration.

Adjusting the mechanical belt tensioner
If a mechanical belt tensioner is being used, adjust according to Adjusting the mechanical belt tensioner, B5234T9, B5244T7 Adjustments.

Tighten the timing belt




Remove the lock pin from the tensioner damping unit.

Press hard or knock the belt twice in the direction of arrow (1) and twice in the direction of arrow (2) using a plastic mallet.

Tighten the camshaft pulley screws to 20 Nm .

Remove the camshaft locking tool ( 999 5452 CAMSHAFT ADJUSTMENT TOOL 999 5452 Camshaft Adjustment Tool ) from the rear edge of the camshafts.

Remove crankshaft locking tool 999 5451 ADJUSTMENT TOOL 999 5451 Adjustment Tool (install the plug).

Install the timing cover.

Turn the crankshaft two revolutions and check that the markings correspond.

Install:




- front timing cover
- expansion tank
- the two clamps for the fuel lines.

Install:




- camshaft position (CMP) sensor housing with damper
- rotor and distributor cover
- air cleaner (ACL) housing with hoses
- spark plugs cover
- starter motor
- engine cooling fan (FC)
- fender liner and wheel

Test function
Test drive engine.

Rear seal

Remove:




- air cleaner (ACL) housing with hoses and connectors
- distributor cover, rotor, holder
- camshaft position (CMP) sensor housing and damper

Note! Connectors and hoses for solenoid valve on the air cleaner housing (ACL).

Remove and install new seal




Carefully pry out the seal with a groove-cut chisel.

Clean seal seats and check for shaft end grooving.

Grease the seal.

Install the new seal by pressing it in with drift 999 5450 PUNCH 999 5450 Punch.

Note! The seal is usually positioned flush with the inner chamfer edge. If the shaft journal is showing signs of wear, the seal can be pressed in 2 mm deeper by turning the drift socket.

Install:




- camshaft position (CMP) sensor housing with damper
- rotor and distributor cover
- air cleaner (ACL) housing with hoses and connectors

Test function
Test drive engine.