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| Place the assembly device -2036- and adjust the housing to the height of the stud. |
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| Use the special tool -U-10073-. |
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| Screw the pressure hose -VW 653/3- into the threads of the spark plug. |
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| Use the special tool -U-10073-. |
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| Connect the pressure hose to compressed air with overpressure of at least 6 bar. |
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| Disassemble the springs from the valves with a disassembly lever -VW 541/1A- and with the pressure part -VW 541/5-. |
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| Use the special tool -U-10073-. |
Note! Loosen the conical parts from the valves with hard seatings by lightly tapping them with a hammer in the assembly lever. |
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| Remove the gaskets of the valve stems with the -3047 A- equipment. |
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