Reassembly: unsure of torque requirements for compressing cells together after installing new cells.

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Spiritedfolf, Nov 14, 2021.

  1. Spiritedfolf

    Spiritedfolf New Member

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    We are unsure of how much torque to apply in order to compress the cells appropriately. To clarify, we are not talking about the nuts which hold on the bus bars.
     
  2. edthefox5

    edthefox5 Senior Member

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  3. TMR-JWAP

    TMR-JWAP Senior Member

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    The clamp assembly for the modules has black crossbar tubes that control how much the modules are compressed. The bolts you're talking about thread into these tubes. Just tighten the bolts until the tubes are bottomed out on the white side plates and the bolts stop turning. There's nothing to worry about. The bar length in the Gen 2 battery is exactly what's needed for 28 modules.
     
  4. Mendel Leisk

    Mendel Leisk Underfoot

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    Torque values likely shown in this. Not seeing it, can dig more. The Repair Manual doesn't seem to get into breaking down the pack into individual modules, so maybe they don't mention. Odd though.
     

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    #4 Mendel Leisk, Nov 27, 2021
    Last edited: Nov 27, 2021
  5. TMR-JWAP

    TMR-JWAP Senior Member

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    I guess if we really need to use a specific value. Try 22 ft-lb.
    The bolt is an 8mm with 1.25 thread pitch. Type 8T. Toyota spec is 22 ft-lb per the Service Specification section of the repair manual.
    Now that we know a number, we can all sleep better tonight.
     
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