Repairing thread on chassis subframe mount

Information 

• Remove wire thread inserts (Helicoil) that are installed as standard before drilling out. 

Information 

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Overview of standard thread on chassis subframe mount

1. Threaded bush, M10: 

   Repair thread -1-  .

   > 5X00IN34 THREAD REPAIRS FOR THREADED BUSHES WITHOUT COLLAR

   Use repair kit > 9843/1 - Thread repair set. 

2. Threaded bush, A 7/16": 

   Repair thread -2-  .

   > 5X00IN34 THREAD REPAIRS FOR THREADED BUSHES WITHOUT COLLAR

   Use repair kit > 9397 - Time-Sert thread repair set  .

3. Threaded bush, M12: 

   Repair thread -3-  .

   > 5X00IN34 THREAD REPAIRS FOR THREADED BUSHES WITHOUT COLLAR

   Use repair kit > 9843 - Thread repair set. 

4. Threaded bush, M10: 

   Repair thread -4-  .

   > 5X00IN34 THREAD REPAIRS FOR THREADED BUSHES WITHOUT COLLAR

   Use repair kit > 9843/1 - Thread repair set  .

5. Threaded bush, M8 (only for right chassis subframe mount): 

   Repair thread -5-  .

   > 5X00IN34 THREAD REPAIRS FOR THREADED BUSHES WITHOUT COLLAR

   Use repair kit > 9843/3 - Thread repair set  .

6. Threaded bush, M6: 

   Repair thread -6-  .

   > 5X00IN33 THREAD REPAIRS FOR THREADED BUSHES WITH COLLAR

   Use repair kit > VAS 6914 - Thread repair set, M6 x 1  .

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Chassis subframe mount

   Location	Description	Type	Basic value	Tolerance
   Thread 1	Dimension X	Depth	4.5 mm
   Thread 1	Dimension Y	Length	20 mm

   Fig 1: Checking Chassis Subframe Mount (M10) Thread Dimension

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Thread repairs on chassis subframe mount (M10)

   Location	Description	Type	Basic value	Tolerance
   Thread 2	Dimension X	Depth	2.4 mm
   Thread 2	Dimension Y	Length	20 mm

   Fig 2: Checking Chassis Subframe Mount (A 7/16) Thread Dimension

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Thread repairs on chassis subframe mount (A 7/16")

   Location	Description	Type	Basic value	Tolerance
   Thread 3	Dimension X	Depth	5 mm
   Thread 3	Dimension Y	Length	22 mm

   Fig 3: Checking Chassis Subframe Mount (M12) Thread Dimension

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Thread repairs on chassis subframe mount (M12)

   Location	Description	Type	Basic value	Tolerance
   Thread 4	Dimension X	Depth	0 mm
   Thread 4	Dimension Y	Length	20 mm

   Fig 4: Checking Chassis Subframe Mount (M10) Thread Dimension

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Thread repairs on chassis subframe mount (M10)

   Location	Description	Type	Basic value	Tolerance
   Thread 5	Dimension X	Depth	3 mm
   Thread 5	Dimension Y	Length	15 mm

   Fig 5: Checking Chassis Subframe Mount (M8) Thread Dimension

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Thread repairs on chassis subframe mount (M8)

   Location	Description	Type	Basic value	Tolerance
   Thread 6	Dimension X	Depth	0 mm
   Thread 6	Dimension Y	Length	12 mm

   Fig 6: Checking Chassis Subframe Mount (M6) Thread Dimension

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Thread repairs on chassis subframe mount (M6)