Valve Train

Camshaft Housing

The cylinder head can be removed from an engine in the car,

Tightening sequence: see figure Loosening sequence: opposite

Lubricate plugs lightly and install by hand. For engine with aluminum plugs the torque is 40 Nm. Use new seals.

Porsche 928 Cylinder Head Nuts Washer

Note installed position of camshaft housing gasket. Camshaft oil bore must be clear (arrow).

Note

Never use any lubricant for the installation of cylinder head nuts and washers. Only the threads of the studs must be given a light coat of engine oil.

Washer must not turn when tightening cylinder head nuts! Control by making paint marks if necessary. On the repair sector the washer can be made reusable by roughening the bearing surface facing the cylinder head with a rough grain sandpaper.

Position of installed cylinder head gasket. Watch marks, "TOP" and arrow, when installing. Arrow faces forward (see figure).

Pull off valve stem seals with Special Tool 3047

Plastic Sleeve Source: Cartool

Alfred-Brehm-Str. 5 D ■ 8070 Ingolstadt/Donau

1 - Pressure pad to install valve stem seal

2 - Valve stem seal 924 as intermediate part

3 - Original valve stem seal

Valve Sizes 928

Distance

Lubricate valve stem seal and push on to valve guide carefully with the pressure pad.

Plastic Sleeve Source: Cartool

Alfred-Brehm-Str. 5 D ■ 8070 Ingolstadt/Donau

Valve Sizes 928 S Distance Intake

Exhaust

1 - Pressure pad to install valve stem seal

2 - Valve stem seal 924 as intermediate part

3 - Original valve stem seal

Valve Sizes 928

Distance

Intake

Exhaust

Removing and Installing Valve Stem Seal

(cylinder head removed)

Pull off valve stem seals with Special Tool 3047

Shorten plastic sleeve from Type 924 by approx. 10 mm and place on valve stem.

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

Get My Free Ebook


Post a comment