Contents: Removal ↓ Installation ↓
Advice. You can try to replace the valve stem seals on the 2112 engine without removing the head from the cylinder block. To do this, set the piston of the cylinder, the valve stem seal of which is to be replaced, to the TDC position and, after removing the spark plug guide pipes, insert a stop under the valve through the spark plug hole (tin rod with a diameter of 2-3 mm). But it is quite difficult to do this.
The work is performed on the removed cylinder head of engine 21124.
To complete the work you will need:
- valve spring compressor;
- tweezers;
- valve stem seal remover;
- mandrel for pressing caps.
Removal
1. Remove the cylinder head (see "Cylinder head of engines 2112 and 21124 (16v) - removal and installation").
2. If the cylinder head was dismantled together with the camshafts, remove the shafts (see "Camshafts of engines 2112 and 21124 (16v) - removal and installation").
3. Remove the hydraulic tappets from their seats in the head (see "Hydraulic valve lifters for engines 2112 and 21124 (16v) - removal and installation").
4. Screw the M6 bolt into the threaded hole of the cylinder head.
5. Place the valve spring compressor grip under the bolt head and place the stop on the spring plate.
Warning! When performing the following operation, do not scratch the walls of the hydraulic tappet seat with the valve spring compressor!
6. Pressing the valve spring compressor handle, compress the valve spring.
7. Keeping the spring compressed, use tweezers to remove the two valve crackers.
8. Smoothly release the spring and remove the valve spring compressor.
9. Remove the spring plate using tweezers.
10. Remove the spring.
11. Remove the spring support washer.
12. Install the puller grip on the oil scraper cap.
13. Press the cap off the valve guide sleeve.
Installation
1. Apply clean motor oil to the working edge of the new cap and carefully, so as not to cut it on the sharp edges of the grooves of the valve stem, put the cap on the stem.
2. Using light hammer blows through the mandrel, press the cap until it stops on the guide sleeve.
3. Install the support washer, spring, spring plate and crackers in the reverse order.
We replace the oil seals on other valves in the same way.