Calling JVB (Jim) 1250 shift cam boxer internals question

Discussion in 'GS Boxers' started by Jontaff, Sep 15, 2019.

  1. JimVonBaden

    JimVonBaden "Cool" Aid! Supporter

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    One pin is always engaged when the engine is running.
    #21
  2. adventuro

    adventuro Adventurer

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    I know you have hands on experience, but all the videos I've seen, looks like pin shifts the cam over and then retracts. It looks like if a pin stayed engaged, the cam would slam back and forth. I'll take your word for it though, as I have only seen pics and video...thanks again.
    #22
  3. Friz Freleng

    Friz Freleng Religious zealot Supporter

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    Just curious--If a solenoid should fail, does anyone know the price of a replacement? Bob's and Max's parts fiche don't list the 1250 yet.
    #23
  4. Jontaff

    Jontaff Been here awhile

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    I will try and find that information for you.
    As far as I know dealers are still getting updates for their 1250GS/GSA parts so that also takes time for their web sites to refresh.
    #24
  5. chris73

    chris73 Been here awhile

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    The pins could be wear items over time. This would concern me more than solenoid failure. As long as the pins and grooves are robust, this looks like a smart simple system.
    #25
  6. Lead Wrist

    Lead Wrist More Gelände less Straße

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    SWITCHING CAM ADJUSTER Qty 2 Part # 11 38 8 567 153 Price ea. $461.23
    #26
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  7. JimVonBaden

    JimVonBaden "Cool" Aid! Supporter

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    Look at the shape of the slot. As the pin retracts, the other pin rises and pulls the cam over. Then the slot stays round and the cam can't move. The slot has a riser in it that once pulled over is no longer engaged.

    [​IMG]
    #27
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  8. JimVonBaden

    JimVonBaden "Cool" Aid! Supporter

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    I suppose it is possible, but the pins appear hardened, and will last the life of the cam.
    #28
  9. Jontaff

    Jontaff Been here awhile

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    Thanks for getting this information.

    I called my parts person and he gave me another part number for the shift mechanism, so I don't know if this was the updated part number or if yours was the more correct number.
    Here it is: 13639446410
    #29
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