Westerbeake 8.0 diesel valve adjust

Discussion in 'General Maintenance/Repair Questions' started by ZZ13, Aug 1, 2020.

  1. ZZ13

    ZZ13 Well-Known Member

    Nov 25, 2009
    Lady's Island, SC
    2001 400 Sedan Bridge
    Cummins 450 Diamond
    7E6EAF24-F55B-4EE1-9600-1C437FF1943D.png Getting ready to adjust valves on my diesel generator. It's 7 years old with about 1000 hours on it. I've never adjusted valves on anything before. Here's the formula from the manual. Any pointers from any of you experts before I start?

    One question, I really don't want to mess with torquing head bolts as it recommends. Can I skip that part?
     
  2. techmitch

    techmitch Well-Known Member GOLD Sponsor

    May 1, 2008
    Chesapeake Bay, Middle River/Frog Mortar Creek MD.
    1999 270 DA
    Twin 4.3s W/Alpa I Gen II's
    I wouldn't skip the head bolt torque part of the job. It is important. If you don't have a torque wrench a cheap one from HF would be better than not doing it. Most parts stores have them as loaners or rentals and it is easy to do and should be done prior to valve adjustment.
     
  3. fwebster

    fwebster Well-Known Member TECHNICAL Contributor PLATINUM Sponsor

    Oct 6, 2006
    Middle Tennessee ; Panama City Beach, FL
    1996 450DA
    3116 Caterpillars
    I agree.

    Re-torquing the head boats is important or Westerbeke wouldn't have added it to the 8.0BTD recommended 500 hour service. The reason is that small displacement diesel engines are particularly subject to siphoning(sucking!) coolant into the cylinders as the engine cools, particularly if the head bolts are not torqued properly. Re-torque the head bolts and this is one more potential 5-figure gun all of us with older boats don't have pointing at you.
     
  4. ZZ13

    ZZ13 Well-Known Member

    Nov 25, 2009
    Lady's Island, SC
    2001 400 Sedan Bridge
    Cummins 450 Diamond
    Got it. Looks easy enough. Loosen them and then torque them, one at a time, in the specified order.
     

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