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XC90 2.5T AWD L5-2.5L Turbo VIN 59 B5254T2 (2003)

Engine, Cooling and Exhaust > Engine > Seals and Gaskets, Engine > Camshaft Oil Seal > Component Information > Service and Repair > Camshaft Seal/Variable Valve Timing (VVT) Unit, Replacing > Page 3313

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Camshaft Oil Seal: Service and Repair
Replacing the Camshaft Seals/Variable Valve Timing Unit

Replacing the camshaft seals/variable valve timing unit

Removing the front camshaft seal

Note! The illustrations in this service information are used for different model years and/or models. Therefore there may be some variation.
However, the essential information in the illustrations is always correct.

Caution! There are a number of versions of the variable valve timing unit. Therefore it is extremely important to always read the information
referring to the engine variant/model year to be remedied.

Replacing the rear camshaft seal

See Removing/Installing the rear camshaft seal.

Preparation

Caution! Interrupt the current: Disconnect the battery negative lead. First read Battery, disconnecting See: Starting and
Charging/Battery/Service and Repair/Procedures/Battery, Disconnecting.

Remove the timing belt from the timing gear pulley for the camshafts. See See: Timing Components/Timing Belt/Service and Repair/Removal and
Replacement

Check the tensioner and idler pulleys. See See: Timing Components/Timing Belt/Service and Repair/Removal and Replacement

Remove camshaft position (CMP) sensor housing and the trigger wheel.
Remove the cover at the rear edge of the camshaft.

Removing the variable valve timing unit/timing gear pulley

Install adjustment tool 999 5452 CAMSHAFT ADJUSTMENT TOOL See: Tools and Equipment/999 5452 Camshaft Adjustment Tool at the rear of the
camshafts. Screw the adjustment tool sections together into one. Remove the plug from the front edge of the variable valve timing unit (Tx55).
Remove the centre screw from the variable valve timing unit (Tx55). Carefully pull out the variable valve timing unit with the timing gear pulley.
The following applies to timing gear pulleys without variable valve timing:
Remove the screws. Remove the timing gear pulley.

Removing the front camshaft seal

Engine, Cooling and Exhaust > Engine > Seals and Gaskets, Engine > Camshaft Oil Seal > Component Information > Service and Repair > Camshaft Seal/Variable Valve Timing (VVT) Unit, Replacing > Page 3313

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