Installing Repair Threaded Bush

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

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1. Screw point for diagonal brace mounting
2. Screw point for rear-axle side section mounting
3. Screw point for V-strut mounting
4. Screw point for engine mounting
5. 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 TABLE. 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: Milling In Shoulder

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3. Cut thread

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

   Fig 4: Identifying Thread Cutting Length

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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: Screwing In 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  .