Valve Train, disassembling and assembling (models up to 11.94)
WARNING: This page does not describe the selected car, but rather 26 other vehicles, including the 2002 Volkswagen Cabrio, 2001 Volkswagen Cabrio, 2000 Volkswagen Cabrio, 1999 Volkswagen Jetta, and 1999 Volkswagen Golf. However, it is still accessible from the selected car via links, so may be relevant.
Models from 1994 and up, see VALVETRAIN, DISASSEMBLING AND ASSEMBLING (12.94 AND UP)
NOTE:
Cylinder heads with cracks between the valve seats or between valve seat and spark plug threads can be used without decreasing the service life. Also, cracks at the first few threads of the spark plug thread are permissible. Cracks may not be wider than 0.5 mm (0.020 in.).
The following list pertains to Fig 1.
- Bearing cap
- Installation position, see Installation Position Of Camshaft Bearing Cap
- Installation sequence, see INSTALLING
- Nut
- Up to 07.95: 20 Nm (15 ft lb)
- 08.95 and up: 35 Nm (26 ft lb)
- Camshaft
- Checking axial play, see Checking Camshaft Axial Play
- Removing and installing, see CAMSHAFT SEAL, REMOVING AND INSTALLING
Measure radial clearance with Plastigage®:
- Wear limit: 0.1 mm (0.004 in.)
- Runout (max): 0.01 mm (0.0004 in.)
- Identification and timing, see CAMSHAFT IDENTIFICATION AND TIMING
CAUTION: DO NOT turn camshaft when measuring radial clearance. - Woodruff key
- Check for tight fit
- 80 Nm (60 ft lb)
- Use holding tool 3036 to loosen and tighten
- Cylinder head
- See Note in COMPRESSION PRESSURE, CHECKING
- Replacement cylinder heads with camshaft bearing shells, see Reconditioned cylinder heads with camshaft bearing shells
- Valve seats, refacing, see VALVE SEATS, REFACING
- Seal
- Replacing, see CAMSHAFT SEAL, REMOVING AND INSTALLING
- Cylinder head reworking dimension
- Minimum: a = 132.6 mm (5.220 in.)
- Valves
- Do not reface by cutting or grinding, only hand-lapping is permitted
- Valve dimensions, see Valve dimensions
- Valve guide
- Replacement valve guide with shoulder
- Checking, see VALVE GUIDE WEAR, CHECKING
- Replacing, see VALVE GUIDES, REMOVING AND INSTALLING
- Valve spring seat, lower
- Valve stem oil seal
- Replacing, see VALVE STEM SEALS, REPLACING (CYLINDER HEAD INSTALLED)
- Valve springs
- Removing and installing with cylinder head removed: use 2037
- Removing and installing with cylinder head installed, see VALVE STEM SEALS, REPLACING (CYLINDER HEAD INSTALLED)
- Valve spring seat, upper
- Valve keepers
- Hydraulic valve lifters
- Do not interchange
- Checking, see HYDRAULIC VALVE LIFTERS, CHECKING
- When removed keep camshaft contact surface pointing downward
- Before installing, check camshaft axial play, see Checking Camshaft Axial Play
- Installing: oil camshaft contact surface