Contents: Disassembly ⬇ Assembly ⬇
Disassembly
1. Install the EN-6215-5 side brackets (1) onto the EN-6215-4 mounting stand.
2. Install the EN-6215-4 crossbar (1).
3. It is necessary to clean the threads of the spark plug holes to ensure correct and secure installation of the counter-bearings. Insert the M14 x 1.25 tap (1) into the threaded hole and slowly run it along the thread.
4. Turn over the cylinder head.
5. Install the counter supports (1).
Note: There are two types of counter supports: Type A and Type B. It is necessary to select the correct type depending on the combustion chamber design.
6. Install the EN-6167 locking device (1). Connect the EN-6215-3 mounting hardware (3) with the safety pins. Install the locking bolts (2), then turn the cylinder head over again.
7. To prevent damage to the equipment, it is necessary to use the EN-6171 mandrel (1) before dehydrating the valves. Install the mandrel on the valve retainer (a plate of crackers) and loosen the fastening with a short blow of a rubber hammer.
8. Using a special tool (1), compress the valve spring with the plate to relieve the valve crackers, then remove them.
Note: The valve spring compressor (1) must be installed parallel to the valve stem to prevent damage to the tools or valve parts. If the tool cannot be installed parallel, the lever must be adjusted accordingly.
9. Remove the valve plate and valve spring and place them in the appropriate order on the EN-849 assembly shelf. Using the EM-840 puller (1), remove the oil deflector cap from the valve guide sleeve with a rotary motion.
10. Loosen the remaining valves in the same manner.
11. Remove the valve spring seats from the cylinder head and also place them on the EN-849 assembly shelf (1).
Assembly
Note: Lubricate the valve guides and stems with engine oil. Make sure that the valves and their components are installed in their proper places.
1. Install counter supports (1) of the appropriate type.
2. Install the EN-6167 locking device (1). Connect the EN-6215-3 mounting hardware (3) with the safety pins. Install the locking bolts (2), then turn the cylinder head over.
3. Using a suitable mandrel (2), install the oil deflector caps (1).
Note: For 5mm, EN-958 mandrel is suitable.
4. Install the spring seats, valve springs and valve retainers into the cylinder head.
Note: Make sure the valve springs and retainers are installed in their proper positions.
5. Using a valve spring compressor, install the valve springs. Assemble the valve spring compressor in the following order:
- support (6);
- bushing (5);
- spring (4);
- plunger EN-6086-200-10 (3);
- screw plug (2);
- lever adapter (1).
Note: Incorrect combination of valve spring compressor and plunger may result in damage to the plunger or valve springs.
6. Install the crackers (1) into the valve spring compressor (2) as shown in the figure and secure them with the sleeve.
7. Install the EN-6086-7 lever (2) on the adapter (3) with the valve spring compressor (4) and on the cross member (1).
8. Gently press on the valve spring compressor; you will hear the valve springs being installed.
9. Install crackers on the remaining valves in the same way.
10. Remove the cross member (1).
11. Remove the holders (1) and detach the cylinder head from the mounting stand.
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