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Home >> Porsche >> 2011 >> 911 Speedster >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 13 - Engine - CRANKGEAR, Pistons -- CARRERA (997) >> WM 137619 Removing And Installing Aluminium Pulley - Gt3 (Gt3, Gt3 RS) >> Removing Aluminum Pulley

Removing Aluminum Pulley

NOTE: Incorrect tool
  • Risk of damage to components

→ Use prescribed tool.

  1. Retaining device 9732/1  must be converted.
    1. 1.1. To do this, press out the two retaining pins.
      Fig 1: Identifying Special Tool 9732/1
      G09816808Courtesy of PORSCHE CARS NORTH AMERICA, INC.
    2. 1.2. Insert two M10 x 60 screws -2-  and tighten hand-tight with two M10 nuts -3-  .
      Fig 2: Identifying Special Tool 9732/1 Converted
      G09816809Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  2. Loosen and unscrew the two bottom M10 fastening screws on the engine carrier.
    NOTE: Components stored or set down incorrectly
    • Risk of damage to component surfaces

    → Set the component down on a clean surface, workbench or assembly fixture.

  3. Remove aluminum pulley for crankshaft.

    Get another person to help you do this because of the high loosening forces required. 

    1. 3.1. Join the converted retaining device 9732/1 -1-  to the extension for special tool holding wrench 9732 -2-  .
    2. 3.2. Position the counter-hold tool using the screws on the pulley -arrows-  , turning the pulley (clockwise) if necessary.
      Fig 3: Positioning Counter-Hold Tool
      G09816810Courtesy of PORSCHE CARS NORTH AMERICA, INC.
    3. 3.3. Loosen and unscrew M14 x 1.5 hexagon-head bolt -1-  . Counter with retaining device 9732/1 -2-  .
      Fig 4: Loosening Fastening Screw On Pulley
      G09816811Courtesy of PORSCHE CARS NORTH AMERICA, INC.
    4. 3.4. Loosen pulley from the crankshaft flange and remove it.
    5. 3.5. Replace bolt and friction plate.
  4. Check crankshaft flange, dowel pin and fitting bore for damage.
    1. 4.1. Clean and remove all grease from the crankshaft flange.
    2. 4.2. Replace the dowel pin if necessary.