Intake Camshaft Oil Seal, Replacing

Intake camshaft oil seal, replacing
Special tools and workshop equipment required





^ Oil seal extractor 2085





^ Puller 3241

Removing
Cylinder head installed
Lock carrier in service position, Refer to Body and Frame, Radiator Support, Service and Repair





^ Remove engine cover -arrows-.
^ Remove top section of toothed belt guard.





^ Unplug connector from Hall sensor -G40 -arrow-.
^ Remove housing for Hall sensor -G40.
^ Remove washer and Hall sensor rotor ring.





^ To guide oil seal extractor, screw bolt 2085/1 into camshaft as far as it will go by hand.
^ Remove inner part of oil seal extractor 2085 two turns (approximately 3 mm) out of outer part and lock with knurled screw.





^ Lubricate threaded head of oil seal extractor 2085, place in position and exerting firm pressure screw as far as possible into oil seal.
^ Loosen knurled screw and turn inner part against camshaft until oil seal is pulled out.

Installing

Notes:
^ Depending on design, radial shaft oil seals with ring spring or so-called PTFE oil seals are used on intake camshaft.





^ Distinguishing features: Conventional shaft oil seal has just one sealing lip -arrow 1- which is pressed against sealing surface a ring spring.
^ PTFE oil seal has a thread-like sealing surface -arrow 2-, but no ring spring.
^ The sealing surface of the PTFE oil seal must not be stretched during installation. Consequently the PTFE oil seal must not be inserted using the guide sleeve for oil seals with ring spring.
^ PTFE oil seals must be installed according to direction of shaft rotation (see arrow markings on oil seal). Incorrect direction of rotation results in oil leakage.





Installing PTFE oil seal:
^ Check chamfer edge -arrow- on end of intake camshaft for burrs or sharp areas.
^ If necessary smooth edges using an oil stone.
^ Do not oil sealing lip of oil seal.
^ Carefully push PTFE oil seal onto end of shaft by hand.

Installing oil seal with ring spring:
^ Do not oil sealing lip of oil seal.





^ Install guide sleeve 3241/2 onto camshaft journal.
^ Slide oil seal over guide sleeve.





All models:
^ Push in oil seal as far as it will go using thrust sleeve 3241/1. To do so, use bolt 3241/3.
^ Install Hall sensor.
^ Install top section of toothed belt guard.
^ Install lock carrier, Refer to Body and Frame, Radiator Support, Service and Repair.





Tightening torques