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Thread: timing belt tensioner question

  1. #1
    Regular Member wildchild's Avatar
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    Vehicle : vectra c

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    Engine : 1.9 cdti 16v 150

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    Default timing belt tensioner question

    Hi folks i've been following a few threads on timing belt and waterpump changes n got to admit really impressed with how easy you guys make it look but the only thing not too confident with and stopping me from doing it is setting the belt tensioner can someone please post up the correct way of doing this as i could do with doing soon n i really dont like getting mechanics to do somthing i can do myself many thanks in advance n car us 1.9 cdti 150
    gaz

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    Regular Member lee gsi's Avatar
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    Default

    You need to push the tensioner so the pointer lines up with the mark.

    I will post a picture up later when I am on my other PC showing it.

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    Quote Originally Posted by lee gsi View Post
    You need to push the tensioner so the pointer lines up with the mark.

    I will post a picture up later when I am on my other PC showing it.
    Excellent I await this too, as in the middle of doing my cambelt. The tensioner is not one I'm familiar with and I haven't got any manual to refer too

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    Regular Member AntSSSS's Avatar
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    Vehicle : Vectra Estate

    Trim : SRI

    Engine : CDTI 150 (Z19 DTH)

    Year : 2008

    Mileage : 100k

    Default

    Hey guys,

    So I have changed these on the 150 about 6 times in the last few weeks - lol...

    You basically have to get the pointer on the tensioner to line up with the hole, then turn the engine by the crank bolt 720 degrees (i.e. two full revolutions of the crank) and then slacken off the tensioner and re-tension.

    IMPORTANT: To set the tension - just under where the tensioner bolts in is a threaded hole. This is for a bolt to be threaded in that you can then leaver a big screwdriver on to move and set the tensioner. You leaver the screewdriver on the bolt and on the turned out piece of the tensioner.

    I have a pic also of the tensioner set - and will post in a sec.

  5. #5
    Regular Member AntSSSS's Avatar
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    Vehicle : Vectra Estate

    Trim : SRI

    Engine : CDTI 150 (Z19 DTH)

    Year : 2008

    Mileage : 100k

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    Tensioner set pics:
    VecEstate-42.jpg

    VecEstate-43.jpg

  6. #6
    Regular Member AntSSSS's Avatar
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    You can see on the first pic the but of metal that is folded out - this is what you use to leaver the tensioner out if that makes sense?

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    Setting the tensioner is a doddle

    The pics AntSSS posted are good to. First fit tensioner, then as mentioned push the black metal tab (under the word Korea in the first pic) really hard until the tensioner is at its max setting. Then torque up securing bolt (25 - 30nm). Do all this under the car from within the wheelarch. you may need to refit one of the casing bolts you removed earlier to act as a lever point to lever agaisnt the tensioner with a screwdriver (it will become clear when it is it bits!)

    turn engine over by hand twice on the crank nut.

    loosen the tensioner securing bolt until the pointer aligns with the hole, again as per the pics. this is the 'correct' tension.

    I can recommend conti belts/timing kits.

  8. #8
    Regular Member wildchild's Avatar
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    Vehicle : vectra c

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    Engine : 1.9 cdti 16v 150

    Year : 06

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    hi guys many thanks for the replys to this thread and i'm glad it helped someone else too i wasnt ignoring it i just completly forgot about it sorry. its been a great help
    once again many thanks
    gaz

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    Ok I'm in the middle of doing this now but been rained Off, everything is stipped ready to be rebuilt, the water pump was well fooked! play in bearing and very snatchy when tuned by hand so great I had already bought one.

    Also the timing belt tensioner I noticed the indicator was well passed the hole almost inline with the lot toward bottom of tensioner! overtightened? could this have fooked the water pump?

    Also the fan belt tensioner was a bit noisey so have bought that too.

    Also noted the camshaft pulley has a notch but there was no marking on the casing? just matched crankshaft pulley marks and camshaft pulley was at 1 o'cklock

    Also noted fuel pump pulley has a notch on it too? is this because they are same pulleys? as in same part no

    think rain is going off now, fingers crossed

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    Default

    Oh and one other thing, the kit comes with a new square nut for the back of the tensioner, how do you replace that as it seems to be in the casting?

    cheers Ronnie

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