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| Screw the detent part -VAS 5161/6- with the interlocking fork -VAS 5161/5- into the guide plate. |
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| Slide the knurled spacer ring -VAS 5161/23-1- onto the assembly cartridge -VAS 5161/8-. |
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| Connect the adapter to the compressed air with a commercially available intermediate piece and apply constant pressure. |
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| Minimum pressure: 0.6 MPa (6 bar) overpressure. |
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| Hook the pressure fork -VAS 5161/2- onto the detent part and push the assembly cartridge downwards. |
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| Turn simultaneously the knurled screw of the assembly cartridge to the right, until the tips click into the valve collets. |
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| Rotate the knurled screw to the left and to the right, by doing so the valve collets are pressed apart and are installed in the assembly cartridge. |
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| Release the pressure fork. |
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| Remove the assembly cartridge with the knurled spacer ring. |
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| Remove the valve spring with the valve spring retainer. |
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