Removing Valve Lifters (Hydraulic Tappets)

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Information

The hydraulic tappets are fitted as bucket tappets on the outlet side and as switching tappets for valve lift s viuiiovei on the intake side.
Switching tappets and bucket tappets cannot be interchanged.
The hydraulic tappets have a twist lock for the cylinder head.

Information

If the hydraulic tappets are to be re-used, they must be marked according to installation position using a water-resistant felt-tip pen and set aside in such a way that they cannot be mixed up!
If the hydraulic tappets are to be re-used, they must be installed at the same position!

Fig 1: Camshafts, Cylinder Bank 1 To 4 Components Location

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Camshafts, cylinder bank 1 to 4

1	Camshaft (outlet)
2	Camshaft (Intake)
3	Hydraulic valve for variable valve lift control
4	Screw, M5 x 12
5	Switching tappet (oil with engine oil)
6	Bucket tappet (oil with engine oil)
7	Plug
8	Mounting saddle 1 to 4
9	Plug
10	Bearing locations (oil with engine oil)
A	Direction of travel

Fig 2: Camshafts, Cylinders 5 To 8 Components Location

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Camshafts, cylinders 5 to 8

1	Switching tappet (oil with engine oil)
2	Bucket tappet (oil with engine oil)
3	Camshaft (intake)
4	Hydraulic valve for variable valve lift control
5	Screw, M5 x 12
6	Camshaft (outlet)
7	Plug
8	Mounting saddle, cylinders 5 to 8
9	Plug
10	Bearing surfaces (oil with engine oil)
A	Direction of travel

Pull the hydraulic tappets out of the cylinder head one after the other Hydraulic tappet and set them aside In such a way that they cannot be mixed up Putting components down without mixing them up (cylinder bank 5-8 shown here as an example) .

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Hydraulic tappet

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Putting components down without mixing them up (cylinder bank 5-8 shown here as an example)

E	Intake side
A	Exhaust side
5 to 8	Cylinders