Volvo D12C Valve lash

Discussion in 'Volvo Forum' started by jakemcclure, Sep 27, 2011.

  1. Pablo-UA

    Pablo-UA Road Train Member

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    Exaust valves are loose with zero oil pressure)))) With VEB exaust valves must be ajusted to zero clearance. But look at ECM sticker, can you see VEB (Volvo engine brake?), it is kinda Jake Brake. If no VEB - 0.4-0.5 mm, if engine with VEB - no ajustment.

    run Cyl. compression test with VCADs pro/VTT. If any cylinder compression is not lower 90% - keep driving truck. Run test twice becouse starter motor may be old and turn engine not smooth enought for correct test.
     
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  3. jakemcclure

    jakemcclure Bobtail Member

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    Sep 23, 2011
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    The last time i was under the valve cover putting an injector in... i noticed the marks around the cam gear... if i remember correctly, they are just behind the gear. should be numbered 1-6
     
  4. Pablo-UA

    Pablo-UA Road Train Member

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    yes, cylinder marking) V-marks are for VEB. If you have VEB = do not ajust it becoue you need plates. No reason.
     
  5. jaielv

    jaielv Light Load Member

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    Dec 30, 2010
    joliet,il
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    what kind of plates pablo.I just adjusted my valves .both intake and exhaust where adjusted.volvo d-12 with engine brake.I did not see any plates been used to adjust exhaust.I did notice timing marks on cam .number 1-6 + V1-v6 .the procedure was turning the engine to the coresponding number and adjusting intake and injector.and the exhaust was v# on what was on the right.
     
  6. king Q

    king Q Road Train Member

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    He is talking about shims.
     
  7. Pablo-UA

    Pablo-UA Road Train Member

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    Yep, I called shims plates...

    Well, post me VIN of this truck to pull the manual
     
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