Valve Stem Seals, Removing And Installing, Cylinder Head Removed
Special tools and workshop equipment required
- Puller - Valve Seal: 3364
- Seal Installer - Valve Stem: 3365 for the valve stem seal with a single sealing lip. Refer to Figure.
- Fitting Tool: T40376/1 for the valve stem seal with a double sealing lip. Refer to Figure.
- Valve Keeper Tool Kit: VAS5161A with Guide Plate: VAS5161/19C
- Engine and Transmission Holder: VAS6095A
- Cylinder Head Tensioning Device: VAS6419
- Assembly Tool: T40452
Procedure
-- Remove the intake manifold. Refer to INTAKE MANIFOLD, REMOVING AND INSTALLING .
-- Insert the Cylinder Head Tensioning Device: VAS6419 in the Engine and Gearbox Bracket VAS6095A: VAS6095A .
-- Tension the cylinder head on the cylinder head tensioning device, as shown.
-- Connect the cylinder head tensioning device to compressed air.
-- Slide the air cushion with the lever -arrow- under the combustion chamber onto the valve stem seal that will be removed.
-- Let enough compressed air flow into the air cushion until it contacts the valve plate.
Guide Plate, Reworking:
-- Check if the opening -arrow- is present.
-- If necessary, rework the Guide Plate: VAS5161/19C -arrow- until the guide plate touches the cylinder head and the guide pin -1- is free.
Continuation:
-- Fasten the Guide Plate: VAS5161/19C on the cylinder head as shown using the Knurled Thumb Screws M6: VAS5161/12 .
-- Insert the Valve Keeper Tool Kit - Punch: VAS5161/3 in the guide plate and loosen the stuck valve retainers with a plastic mallet.
Intake Side:
-- Install the Retainer: VAS5161/6 with the Guide Forks: VAS5161/5 in the center threads of the Guide Plate: VAS5161/19C .
Exhaust Side:
-- Install the Retainer: VAS5161/6 with the Guide Forks: VAS5161/5 in the outer threads on the Guide Plate: VAS5161/19C .
Continuation:
-- Insert the Assembly Cartridge: VAS5161/8A into the Guide Plate: VAS5161/19C .
-- Engage the Pressure Fork With Lever for Assembly Cartridge: VAS5161/2 on the Retainer: VAS5161/6 .
-- Press down the Valve Cotter Tool Kit - Assembly Cartridge: VAS5161/8A and at the same time turn the knurled thumb screw on the Valve Cotter Tool Kit - Assembly Cartridge: VAS5161/8A to the right until the points engage in the valve keepers.
-- Move the knurled thumb screw back and forth slightly. This presses the valve retainers apart and captures them in the installation cartridge.
-- Release the Pressure Fork With Lever For Assembly Cartridge: VAS5161/2 .
-- Remove the Assembly Cartridge: VAS5161/8A .
-- Remove the valve stem seals using the Puller - Valve Seal: 3364 .
- In order not to damage the valve stem seal -4- during installation, mount the Assembly Tool: T40452 -3- on the valve stem -2-.
-- Lightly oil the valve stem seal sealing lip.
-- Insert the valve stem seal into the seal installer -5- and carefully press it all the way onto the valve guide -1- over the Mounting Sleeve.
-- Remove the Assembly Tool.
-- Insert the valve spring and valve spring retainer.
-- Install the Valve Keeper Tool Kit: VAS5161A as shown.
Intake Side:
Exhaust Side:
Continuation:
- If the valve keepers were removed from the assembly cartridge, they must then be inserted into the Valve Insertion Device: VAS5161/18 .
-- Press the Valve Keeper Tool Kit Assembly Cartridge: VAS5161/8 down with the Valve Keeper Tool Kit Pressure Fork with Lever for Assembly Cartridge: VAS5161/2 and rotate the cartridge knurled thumb screw back and forth while pulling up.
-- Release the Pressure Fork with Lever for Assembly Cartridge: VAS5161/2 with the knurled thumb screw pulled.
-- Remove the Valve Keeper Tool Kit: VAS5161A .
-- Repeat the procedure on each valve.
Assembling
-- Install the intake manifold. Refer to INTAKE MANIFOLD, REMOVING AND INSTALLING .