Replacing Lower Trailing-Arm Bearings

→ Read specific safety information for the press.

→ Check that the press is working perfectly before use, particularly the safety components.

Information 

The pressure pieces and the hollow plunger-type hydraulic press VAS 6178 are used for removal and installation. Push a suitable assembly fixture T10230  onto the threaded rod and align it as described.

Fig 1: Identifying Wheel Carrier With Axle Bearing

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The bearing consists of the axle bearing -1-  and lock -2-  .

Fig 2: Identifying Axle Bearing With Lock

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Before pressing out the bearing, check the alignment by checking the position of the cut-outs. → Alignment of bearing 

Fig 3: Checking Alignment Of Bearing

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1. Press out the lock.

   Use extractor T10230/59  for pressing out the lock.

   1. 1.1. Fit the extractor -1-  on the lock -2-  .
   2. 1.2. Tighten adjusting screw -3-  until the extractor is fitted securely.
   3. 1.3. Tighten adjusting screw -4-  to prevent the tool from tilting.
   4. 1.4. Fit attachment part -5-  of the extractor close to the cut-out for the lock.
   5. 1.5. Tighten adjusting screw -6-  until the lock is loosened completely.
      Fig 4: Identifying Lock And Screws

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2. Press out the bearing.

   The following pressure pieces are required for pressing out the bearing. → Pressure pieces for pressing out bearing 

   Fig 5: Identifying Pressure Pieces For Pressing Out Bearing

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   • T10230/54 - -1- 
   • T10230/55 - -2- 
   • T10230/56 - -3- 
   • T10230/3 - -4- 
   • T10230/7 - -5- 

     The pressure pieces are used as follows. → Arrangement of tools for pressing out bearing 

     Fig 6: Adjusting Tools For Pressing Out Bearing

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3. Press in the bearing.

   Before pressing in the bearing, always check the alignment of the bearing. → Alignment of bearing 

   The following pressure pieces are required for pressing in.

   → Pressure pieces for pressing in bearing 

   Fig 7: Identifying Pressure Pieces For Pressing In Bearing

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   • T10230/54 - -1- 
   • T10230/10 - -2- 
   • T10230/57 - -3- 
   • T10230/3 - -4- 
   • T10230/7 - -5- 

     The pressure pieces are used as follows. → Arrangement of tools for pressing in bearing 

     Fig 8: Adjusting Tools For Pressing In Bearing

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4. Press in the lock.

   The following pressure pieces are required for pressing in the lock. → Pressure pieces for pressing in lock 

   Fig 9: Identifying Pressure Pieces For Pressing In Lock

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   • T10230/54 - -1- 
   • T10230/57 (2x) - -2- 
   • T10230/3 - -3- 
   • T10230/7 - -4- 

     The pressure pieces are used as follows. → Arrangement of tools for pressing in lock 

     Fig 10: Adjusting Tools For Pressing In Lock

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5. To ensure that the lock is fitted at the correct position on the bearing, the lock must be crimped with the bearing. The following pressure pieces are required for crimping. → Pressure pieces for crimping 

   The pressure pieces are used as follows. → Arrangement of tools for crimping 

   Fig 11: Identifying Pressure Pieces For Crimping

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   • T10230/54 - -1- 
   • T10230/57 - -2- 
   • T10230/58 - -3- 
   • T10230/3 - -4- 
   • T10230/7 - -5- 
     IMPORTANT: Check alignment of pressure pieces and nuts!
     Fig 12: Adjusting Tools For Crimping

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