Volkswagen Workshop Service and Repair Manuals

Renewing Teflon seal on injector Special tools and workshop equipment required

t  Tool set -T10133-   Note The Teflon ring must not be lubricated. –  Carefully remove old Teflon ring using suitable tools (e.g. cut open ring using razor blade, or prise open ring with small screwdriver and then pull off forwards). It is essential to ensure that the groove and continuous ridge in groove surface are not damaged.

–  Carefully clean injector in area of seal -arrow-. Remove coking deposits using a brass wire brush. –  Clean groove for seal.

–  Fit new seal onto assembly cone -T10133/5-. Push seal as far as possible onto assembly cone -T10133/6- using assembly sleeve -T10133/5-.

–  Turn assembly sleeve -T10133/6- around and push seal to end of assembly cone -T10133/5-.

–  Fit assembly cone -T10133/5- on injector and push seal onto injector using assembly sleeve -T10133/6-. –  Remove assembly cone -T10133/5- and push seal into groove using assembly sleeve -T10133/6-.

–  Push calibration sleeve -T10133/7- onto injector as far as it will go and simultaneously turn it slightly (approx. 180°). –  Pull calibration sleeve -T10133/7- off again by turning it in the opposite direction.

–  Now press calibration sleeve -T10133/8- onto injector to stop by turning gently (approx. 180°). –  Pull calibration sleeve -T10133/8- off again by turning it in the opposite direction. –  Renew O-ring and support washer on injector.