Carefully cut open the gasket ring with a knife as shown -arrow-. Absolutely try to avoid the contact of the knife blade with the valve body.
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Remove the old gasket ring and clean the gasket ring nut in the area of the gasket ring -arrow-. Remove the existing deposits (carbon deposits) with a wire brush.
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Fit a new gasket ring -1- onto the assembly cone -T10133/5-. Slightly push the gasket ring with the assembly sleeve -T10133/6- (knurling points to the gasket ring -1-) as far as possible onto the assembly cone -T10133/5 -.
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Turn the assembly sleeve -T10133/6 - around (now the knurling points away from the gasket ring), and push the gasket ring -1- up to the end onto the assembly cone -T10133/5 -.
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Now position the assembly cone -T10133/5- with the gasket ring from the front onto the injection valve. Push the gasket ring with the assembly sleeve -T10133/6- further onto the injection valve.
The gasket ring is not yet seated in its groove.
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Remove the assembly sleeve -T10133/6 - and the assembly cone -T10133/5-.
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Push the gasket ring by hand into the annular groove.
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Fit the spacer sleeve -T10133/11 - onto the valve body.
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Now press the calibration sleeve - T10133/7- via the gasket ring up to the stop at the spacer sleeve -T10133/11-.
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Pull off again the calibration sleeve -T10133/7-.
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Now press the calibration sleeve - T10133/8- via the gasket ring up to the stop at the spacer sleeve -T10133/11-.
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Pull off again the calibration sleeve -T10133/8-.
Now the Teflon gasket ring has its correct fitting dimension.
Replace supporting washer
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Remove O-ring -3-.
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Cut open the supporting washer -2- with a small side cutter and take it off.
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Pull off the spring element at the injection valve -1- and instead push on the lock washer -T10133/12 -.
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Mount a new supporting washer -1- on the assembly cone -T10133/13- and fit it onto the injection valve as shown.
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Push the supporting washer -1- with the calibration sleeve -T10133/14- (knurled side points to the injection valve) up to the first nut -arrow- onto the injection valve.
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Now turn the calibration sleeve -T10133/14- around (knurled side points away from the injection valve). Push the calibration sleeve via the supporting washer -1- in -direction of arrow- up to the stop on the lock washer -T10133/12-.
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Pull off again the calibration sleeve -T10133/14-.
Now the supporting washer has its correct fitting dimension.
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Now fit a new spring element -1- for the lock washer -T10133/12 - and push a new O-ring -3- in front of the supporting washer -2-.
Note
The Teflon gasket ring -arrow- must not be oiled when installing the injection valve.