Valve Guide Seal: Service and Repair

Special Tools:

Removal
1. Remove the camshafts.
- Remove the valve tappets and place them in order to one side.

2. WARNING: To prevent injury wear protective goggles when working with compressed air. Failure to follow these instructions may result in personal injury.

Unscrew the spark plug on cylinder No. 1 and connect the compressed air supply.

3. WARNING: To prevent injury wear protective goggles when working with compressed air. Failure to follow this instruction may result in personal injury.

CAUTION: Use compressed air at 7 to 10 bars.

Using the special tools, apply compressed air to the cylinder.
- Using the special tools, compress the valve springs and remove the valve collets using some grease and a small screwdriver.
- Remove the valve spring retainers and the valve springs.

4. NOTE: Place all parts in order to one side.

Remove the valve springs.

5. Using special tools, remove the valve stem oil seals.

Installation

1. Install oil seal sleeve to the valve stem.

2. Using the special tool, install the valve stem oil seals.

3. NOTE: Check that there is no dirt or particles within the valve stem grooves. Check the seating of the valve collets.

Using the special tools install the valve springs.
- Insert the valve springs and the valve spring retainers.
- Compress the valve springs and install the valve collets.
- Disconnect and remove the air supply.

4. NOTE: Do not tighten the spark plug at this stage.

Disconnect the compressed air supply and screw in the spark plug.
5. Repeat appropriate steps for all the other cylinders.
6. Coat the valve tappets with engine assembly lubricant and insert them.
7. Install the camshafts.