CAT C15 NXS JAKE WEAK

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Ricardo Trucking, Feb 6, 2026.

  1. Ricardo Trucking

    Ricardo Trucking Bobtail Member

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    Feb 6, 2026
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    Señores, tengo problemas con el servofreno de un C15 Acert. La potencia de frenado del servofreno disminuyó gradualmente. Se quitaron las tapas de culata, se revisó la válvula de holgura y todo parecía estar bien.
    El motor se puso en marcha sin las cubiertas y, sorprendentemente, pierde mucho aceite por el tapón Allen de las tres carcasas (la delantera mucho más que las otras dos).
     
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  3. Inderjit

    Inderjit Heavy Load Member

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    Sep 17, 2017
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    Any leakage will effect the brakes operation. Have a good look for cracks in the housing near the leak.
     
  4. Ricardo Trucking

    Ricardo Trucking Bobtail Member

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    Feb 6, 2026
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    Hi, it doesn't have any cracks, it's just leaking oil from the Allen plug.
     
  5. Ricardo Trucking

    Ricardo Trucking Bobtail Member

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    Feb 6, 2026
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