Installing Repair Threaded Bush

Fig 1: Identifying Threaded Bush For Suspension Subframe Mount Installation Position

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1. Screw point for diagonal brace mounting
2. Screw point for rear axle mounting, front
3. Screw point for rear axle mounting, center
4. Screw point for engine mounting
5. Screw point for transmission mounting
6. Screw point for front axle mounting, rear

→ Thread repairs can only be carried out using the Time-Sert thread repair system.

Information 

The repair bush must be installed recessed. Milling in may only be performed using the Porsche special tool contained in the Time-Sert thread repair kit.

Information 

While pressing in the base thread, a noticeably larger amount of force is required on the screw-in tool to form the internal thread. Pressing is finished when the screw-in tool can be turned further more easily.

1. Drill out thread

   Select M10 or M14 kit.

   Drill out old thread as far as the base of the thread using a drill bit contained in the M10 or M14 kit B  .

   Fig 2: Drilling Out Thread

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2. Mill in shoulder

   Select M10 or M14 kit.

   Mill out bore hole up to dimension X  using spot facer C  . See SUSPENSION SUBFRAME REPAIRS CLASSIFICATION . Milling in may only be performed using the tool contained in the Porsche special tools. Use an electronically controlled power drill set to a speed of approx. 250 RPM (1/_min ) for milling in.

   Fig 3: Identifying Shoulder Bore Hole Dimension

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3. Cut thread

   Cut thread into the chassis bushing using a cutting tool D  up to dimension Y  . See SUSPENSION SUBFRAME REPAIRS CLASSIFICATION . Clean the thread on the chassis bushing (blow it out).

   Fig 4: Cutting Thread

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4. Position threaded bush on the screw-in tool.

   Clean the thread on the bush and screw-in tool.

   Oil the screw-in tool E  .

   Screw the threaded bush A  onto the screw-in tool E  by hand.

   Fig 5: Positioning Threaded Bush On Screw-In Tool

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5. Screw in threaded bush

   Screw threaded bush A  in fully (note bush length classification) using the screw-in tool E  .

   Fig 6: Installing Threaded Bush

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6. Press threaded bush

   Shape and press threaded bush E  by turning further with the screw-in tool D  in the base thread.

   Fig 7: Pressing Threaded Bush

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7. Unscrew screw-in tool

   Unscrew screw-in tool E  from the threaded bush A  .