Camshaft Position Sensor: Service and Repair

Removing oil seal on Hall sender





Special tools, workshop equipment, test and measuring appliances and aux. items required
^ 2085 Oil seal extractor
^ 3241 Seal installer (for seal in standard version with annular spring)
^ T10071 Puller (for seal in PTFE version)
^ V.A.G 1331 Torque wrench (5 to 50 Nm)
^ V.A.G 1332 Torque wrench (40 to 200 Nm)
^ Bolt M8 X 60

Removing





- Pull connector off Hall sender-arrow-.
- Remove toothed belt guard-upper part.
- Remove housing for Hall sender.
- Remove washer and hood for Hall sender.





- Screw bolt 2085/1 into camshaft onto stop by hand, to guide seal extractor.
- Unscrew inner part of oil seal extractor 2085 two turns (approx. 3 mm) out of the outer part and lock in position with knurled screw.





- Lubricate threaded head of oil seal extractor, place it in position and exerting firm pressure screw it into oil seal as far as possible.
- Loosen knurled screw and turn inner part of extractor against camshaft until oil seal has been extracted.

Installing

Note: Gradual introduction of PTFE oil seal (identifying characteristics: no annular spring, sealing lip wider). The sealing lip of this oil ring must not be oiled or lubricated. A plain encased seal of older construction (with annular spring) may be replaced with a PTFE oil seal, but not vice versa.

Installing PTFE seal
- Remove oil remains from crankshaft journal with a clean cloth.





- Fit guide sleeve T10071/5 onto camshaft journal.
- Slide oil seal over guide sleeve.





- Press seal in onto limit stop using press sleeve T10071/3 and bolt Me x 60-1
Installing seal with annular spring
- Lightly oil sealing lip of oil seal.





- Fit guide sleeve 3241/2 onto end of camshaft.
- Slide oil seal over guide sleeve.





- Press seal in onto stop with press sleeve 3241/1 and bolt 3241/3.
Continued for all seals
- Insert Hall sender hood into notch in inlet camshaft.
- Install washer (taper facing outwards) and tighten securing bolt to 25 Nm.
- Install housing for Hall sender and tighten to 10 Nm.
- Install upper toothed belt guard.





- Reconnect connector on Hall sender-arrow-.