Question about Volvo S80

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Cam and piston position

A client of mine rep-laced head gasket and need info on " lining up cams with pistons, 99 s80 2.8 t

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  • dadw3 Jun 26, 2009

    its 99 and can yo be more specific on ling up cam procedure

  • dadw3 Jun 26, 2009

    need to line up cams and exactly how do i do that



2 Answers

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Check the return spring on the parking brake lever as wll as the gear teeth:

  1. Make sure the parking brake cable is free and is not frozen or sticking. Make sure the brake shoes are properly adjusted.
  2. Raise and safely support the rear wheels.
  3. Apply the parking brake while counting the number of notches. Check the desired parking brake stroke; it should be 7-9 notches.
  4. If adjustment is required, remove the adjusting nut cover and turn the adjusting nut located at the front of the parking brake cable.
  5. After adjustment, check there is no looseness between the adjusting nut and the parking brake lever, then tighten the locknut.
Do not adjust the parking brake too tight. If the number of notches is less than specification, the cable has been pulled too much and the automatic adjuster will fail or the brakes will drag.
  1. With the parking brake lever in the released position, turn the rear wheels to confirm that the rear brakes are not dragging.
  2. Lower the vehicle.
  3. Check that the parking brake holds the vehicle on an incline.

Posted on Jun 26, 2009

  • 1 more comment 
  • mohammed marika thambi
    mohammed marika thambi Jun 26, 2009

    make sure they are aligned internal on the cogs first, then get on the
    sprocket that the belt would go, there is a little hole that has 4e
    next to it, rotate that till it lines with the little intended circle
    on the head,

    rotate the crank until the mark on the crank pully aligns with the mark on the block, put cambelt on

  • mohammed marika thambi
    mohammed marika thambi Jun 26, 2009

    f you line the top pulley up with the head, and look face on to the
    pulley. you will see below the 4e marking there is small hole through
    the pulley. and behind the pulley on the actual head there is a dimple.
    you want to line the hole and dimple up dead in the middle.

    Remove your spark plug from 1st cylinder. put something long thin and
    straight in to the hole, make sure you dont drop it down, (make sure in
    about 1 1/2 foot in length. twist the bottom pulley around and line the
    markings up behind this with the pulley, the lower cam sorta thing will
    also have a mark on it, so you can get it lined up band in with the
    mark on the block.

    also whatever you put in the top you will notice coming up as the piston on cyl 1 comes up to top dead centre.

    as far the cam olders, the markings I2, I3, I4, I5 Means inlet/intake

    E2, E3, E4, E5 IS Exhaust. these point towards the cams/timing belt
    side. i can't remember which order they sit in, decending or acsending.
    hope this helps.

  • mohammed marika thambi
    mohammed marika thambi Jun 26, 2009

    would not recomend trying this at home due to the fact these engines
    are what is called a interferace engine if not installed correctly you
    can DESTROY engine same as if the timing belt breaks bends valves and
    head has to come off engine and maybe replace the whole engine. if cams
    move while tring to install new belt can also bend valves.
    vehical has to be raised and supported right front tire removed there
    is a splash shield which can be loosened and held out of the way i use
    a small pair of needle nose vise grips to hold it. then remove the
    serpentine belt will need the 18mm special tool to release belt
    tensioner. once serpentine belt removed remove the two 12mm headed
    bolts holding the belt tensioner in place they are right next to the
    powersteering pump pulley. now remove the 10mm headed bolt to the
    plastic coverover the timing belt housing. dont remove top cover yet
    will need it to line up the cam timing marks before removing the old
    belt now go to the lower section where the harmonic balancer is at will
    need to remove 30mm center nut and the (4 )14mm bolts holding the
    harmonic (crank pulley) on the 30mm nut is very tight and hard to
    remove without the assistance of a good impact wrench because there is
    not really anyway to hold the engine still and you DONT WANT TO TURN
    If you
    can remove the harmonic balancer without turning engine backwards then
    you will them want to turn the engine over to line up the timing marks
    there is one on the crank gear and one on each of the cam gears (DONT
    SIDE OF THE ENGINE AND THE CAM PLUG ) to install the 600.00 cam lock
    tools to hold the cams inplace to prevent the cams from moving and
    bending valves!!!!!!!! but the engine needs to be in time before doing
    that . Will also need a couple of large washers to take up slack to you
    can put 30mm nut back in place to take up the thickness of the removed
    harmonic balancer. this is so you can turn engine over. Once you have
    the timing marks lined up and have installed the cam locks to hold the
    cams. then the timing belt tensioner can be removed there are two types
    one has only one 12mm headed bolt holding it which is and auto
    tensioner and has to be set according to the temp outside if not set
    correctly will either be too tight or not tight enough which you will
    need a 6mm allen wrench when adjusting it to the correct setting the
    other is a hydralic tensioner which has 2 12mm headed bolts holding it
    on the new hydralic tensioner comes with a lock pin in it to hold back
    till the new one is installed this pin is then removed from it and it
    applies pressure to the tensioner to keep the timing belt tight (only
    after getting the new belt on correctly does the pin get pulled. also
    will need to check the idler pulley to make sure its is good usally
    have to replace becase of being noisy DONT WANT TO TAKE A CHANCE WITH
    still really want to know how to install a timing belt on one of these
    engines? well now that you have the cam lock tools in place and the
    engine set by the timing marks you can remove the upper plastic cover
    over the cams, now since you dont need the timing marks on them anymore
    you can remove the tensioner which ever type you have and this will let
    you remove the old timing belt now the new timing belt will probably
    have white lines on it when you remove it from the package the dotted
    line is for the crank shaft gear it has to be lined up with the timing
    marks which are actually on the upper side of the gear the two sold
    lines go on the cam gears lineing up with the marks on them if they
    wont this is where it can get tricky because then the cam gears have to
    come loose so they can line up right . Oh does you S80 have varible cam
    timing ? on either the intake or the exhaust if it does well this is
    gonna take a lot longer because it will have to be readjusted also
    while tring to put the new belt back on. Really I am not trying to
    waste your time or mine I am only about hlf way through this procedure
    if you would like me to contine i will but i dont really think you want
    to try this at home in the driveway i do this for a living and I
    wouldnt want to do it in the driveway


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Welcome to FixYa. Please check the following links for lining up cams with pistons.

Volvo S80

Cam and piston position

Please do accept the solution and revert for further assistance.


Posted on Jun 26, 2009


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