Crank Pulley: Inspection

Check that the crank pulley and crank pulley boss have no deformation, cracks or other damages.
Inspect for oil leakage from the front oil seal. If there is an oil leak, replace the front oil seal with a new part according to the following procedures.
1. Remove the crank pulley. Ref. to MECHANICAL (H4DOTC)>Crank Pulley>REMOVAL .
2. Remove the crank pulley boss from the chain cover.
  
  Fig 1: Locating Crank Pulley Boss From Chain Cover
  Courtesy of SUBARU OF AMERICA, INC.
3. Remove the front oil seal from the chain cover.
  
  Fig 2: Locating Front Oil Seal From Chain Cover
  Courtesy of SUBARU OF AMERICA, INC.
4. Degrease the press-fit section for the chain cover front oil seal, and install the front oil seal to the chain cover using ST.
CAUTION: Do not apply fluid such as engine oil to the front oil seal and the chain cover; otherwise engine oil leakage may occur.

NOTE: When tapping the front oil seal in, protect the radiator fin with cardboards etc. so as not to damage the radiator fin by the plastic hammer.

ST 41399FG020 SPECIAL TOOL B

Front oil seal press-fit position:

1⁺⁰_{-1 mm} (0.0039⁺⁰_-0.0039 in) position from chain cover end face

Fig 3: Installing Front Oil Seal To Chain Cover Using ST
Courtesy of SUBARU OF AMERICA, INC.
Install in the reverse order of removal after replacement.