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V70/S70 Timing Belt questions

posted by  cn on  Tue Jun 29 14:39 CST 2004
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Hi everyone,

I have done research on this topic of Timing Belt and see if everyone agrees with me.

I just opened the TB cover, I have the hydraulic tensioner.

Looking at the layout, there are 2 pulleys, one in the front, and another one in the rear that is pushed up by the tensioner.

Questions:

1. INTERVAL 60K vs 80K
I will change the TB at 60K, at the same time will change the drivebelt. Better overdo than sorry (Owner's Manual says TB change at 80K, but my driving has been mostly city, so I decided to "overkill").
Does everyone think 60K is "overkill"?
Also my car is 1998 so the TB is 6 years old.


2. TENSIONER AND/OR PULLEY
I saw alot of stories on tensioner failure trashing the engine head with it. I plan to change the tensioner anyway (sleep better at night!). The question is: do I ALSO need to change the pulley?
Do I need to chnge both pulleys?
Is there a way to grease the pulley (like greasing a wheelbearing to keep it going a long time)

From your experience, how long do these pulleys last?

TIA


cn
1998 V70 52K miles







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    V70/S70 Timing Belt questions

    posted by  someone claiming to be cbe_steve on  Wed Jun 30 09:04 CST 2004 [RELATED]

    hi,
    ok first question 60,000kms is overkill. 60,000 miles is still a bit premature but i agree better safe than sorry.
    next,the problems of tensioner faluire rarely occur with the hydraulic tensioner,its usually the later models with the manual tensioner that give problems, but if you really want to be safe then go ahead and replace it as well. the pulleys you talk about are not normally replaced on any timming belt service, however when the belt is off you should spin them by hand and check for any noise or play in the bearings for the pulleys. if there is then replace them as well,also check the water pump for leaks or play or noise etc etc..

    steve.








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      V70/S70 Timing Belt questions- Hydraulic vs Mech Tensioner

      posted by  cn on  Wed Jun 30 13:48 CST 2004
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      Dear Steve,

      Thanks for your message.

      Re: Tensioner.
      I thought from reading this forum, the HYDRAULIC tensioner (up to mid-1998) can fail and therefore causes TB slippage and potential engine damage.
      Then Volvo changed to Mechanical Tensioner from mid-1998 on.

      This is the opposite of what you mentioned.

      Please see this post today:

      http://brickboard.com/AWD/index.htm?id=821112

      Could you check for me?

      Mine is the HYDRAULIC type and I would like to replace the tensioner. Again rather be safe than sorry.

      cn
      1998 V70 52K







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