prv motor
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Thread: prv motor

  1. #1
    1000+ Posts jo proffi's Avatar
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    Default prv motor

    My mates volvo 760gle has blown a head gasket, and he's having a tech do the job,who's not overly farmilliar with volvo's.I was hoping that someone could give me some any advice about what things to look out for,or what things to replace whilst the motor is stripped.
    Regards,Jo

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  2. #2
    1000+ Posts Wildebeest's Avatar
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    Quote Originally Posted by jo proffi
    My mates volvo 760gle has blown a head gasket, and he's having a tech do the job,who's not overly farmilliar with volvo's.I was hoping that someone could give me some any advice about what things to look out for,or what things to replace whilst the motor is stripped.
    Regards,Jo
    jo,
    Advise your tech friend NOT to pull the head straight up when removing.
    The book says after removing the head bolts, knock down the head locating dowels. Then tap the head sideways to release it. Theoretically this avoids disturbing the cyl liner seals. Have you got a W/shop manual?

    The manual will show you some of the equipment necessary to remove PRV heads. A timing chain sprocket retainer, this prevents the chain from going slack meaning you'll have to remove the timing chest to sort it all out.
    You will also need cyl liner hold down plates to prevent them moving.

    With the inlet manifold out of the way replace all the hoses and "O" rings.

    When refitting the head follow the head tightening procedure to a "T".
    Over the years the specs have been up-dated, get hold of the latest.

    The above is not a job you can knock over before the pub opens. Have only enough helpers about who can help. Leave the beers until you finish.

  3. #3
    1000+ Posts jo proffi's Avatar
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    Quote Originally Posted by Wildebeest
    jo,
    Advise your tech friend NOT to pull the head straight up when removing.
    The book says after removing the head bolts, knock down the head locating dowels. Then tap the head sideways to release it. Theoretically this avoids disturbing the cyl liner seals. Have you got a W/shop manual?

    The manual will show you some of the equipment necessary to remove PRV heads. A timing chain sprocket retainer, this prevents the chain from going slack meaning you'll have to remove the timing chest to sort it all out.
    You will also need cyl liner hold down plates to prevent them moving.

    With the inlet manifold out of the way replace all the hoses and "O" rings.

    When refitting the head follow the head tightening procedure to a "T".
    Over the years the specs have been up-dated, get hold of the latest.

    The above is not a job you can knock over before the pub opens. Have only enough helpers about who can help. Leave the beers until you finish.
    thank you very much for this info.I feel better about my recomendation.I probed my mate for info and it appears he will save $500 by using the 'mate' who is a ford man.I've convinced him of the merit of taking it to the volvo and scandenavian specialist, as they will have the manuals and diagnostic equipment,and will know this motor and be able to tell if anything else is out of whack.
    regards,jo

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