Engine: TDI: Volvo V70 TDI It's puzzle time !

[Volvo V70 diesel]

The third picture talks to me the most. The block seems to be curved ?

I'm sorry Martin, but I have to go to bed, I wake up at 5 am tomorrow. Hope you will be " on the air" tomorrow to continue this discussion.

VV70

[Martin Cox]

Fortunately the head wasn't curved or warped. However the photo was taken with quite a wide angle lens and it's likely there is some geometric distortion in the picture.

In reality fitting a new timing belt wasn't too bad a job once the head was back on but you do need a few special tools.

[Volvo V70 diesel]

Hy Martin,

The thing that (?) - which (?) has surprised me the most is the pix where we can see the two marks on the cylinder, it's the cylinder, right ?

Astonish ! I do imagine the work it represent to put all this in order... Is the mechanic a part of your normal occupation or are you more a DIY ? Which is my case. I need to understand how things go. And ours Volvo, for "not recents" models are a good school to learn, meaning a sort of " plug and play" built mind.

I spended a couple of time to discover the forum this morning. The promotional video of the Volvo museum collection was cool. There's a magazine, members are plenty (4000), which impress me.

I feel more comfortable here than on a French forum. A question of mentality, I think.

To come back to ours sheeps (Shawn or not), I received some parts of my puzzle today (bracket accessories), the Loctite 243 Blue. I will take time tonight to find my old numeric camera to try to make a kind of tutorial, humbly said.
Start the re assemblying tomorrow afternoon.

To finish, a piece of music, something I have created in august, my way to thank you for your help.

VV70

"Wayne"

[Martin Cox]

In answer to your question, I'm not a professional mechanic but a broadcast engineer. I have done some of my own car maintenance work for many years but the last time I delved inside an engine was about 25 years ago to replace a burnt-out exhaust valve on a Volvo 340.

I've owned my 1998 Volvo V70 Tdi Auto since 2002 and it's always been maintained by the local Volvo dealer. They do a good job and and I haven't had the time to do the work myself.

Last November, for no obvious reason, the cambelt broke. It was not due to be changed for another year or 20,000 miles.

For most sensible people a broken belt on a car of this age and mileage (222,000 miles, about 355,000 km) means a one way ticket to the scrap yard. However, the rest of the car was far too good to scrap. As a replacement we bought a 2008 V70 with 90,000 miles on the clock. With nothing to lose I decided to try and fix it myself. These cars are among some of the best Volvo ever made and we'd grown rather fond of it.

If a timing belt should break, the pistons will inevitably hit some of the valves. On the D5252t engine, it is rare for the pistons to suffer any significant damage but it usually means some valves will be bent, some hydraulic tappets or cam followers will be damaged and in extreme cases the camshaft will break into several pieces. I was quite lucky - one bent exhaust valve in no 5 cylinder and four ruined cam followers, one of which stuck in the head. the camshaft was still in one piece.

The picture with the two marks is actually a picture of the cam follower for valve No 10; by the the exhaust valve in no 5 cylinder. The marks are dents caused when the piston hit the valve, hammering the cam follower into the camshaft. I'll try an add some more pictures over the next few days which may make things clearer.

After I'd removed the cylinder head, seen in the other two pictures, I took it to a local engine specialist who replaced the bent valve and removed the stuck cam follower and overhauled the head. That just left me to put it all back together.

There are many people on this forum who know far more than I do about these engines. Any post by Huron, Martin R Smith or Doingitsideways, to name but a few, is always worth reading.

This forum has a worldwide following and we do understand English is not everybody's first language. Fortunately many of the technical terms are similar in other languages.

Hope this is of some interest.

Martin

[Volvo V70 diesel]

Thanks Martin for these explanations about the history of your timing belt history. It was interesting to read. I make for sure, a bad idea of how prepare an engine after such a so incident, but, it mays be as the rest of the car, time, be patient, some method.

I'm a house keeper in a building of 80 flats. A worker class, but not a hero. The Volvo dealer is out of my financials means. In 2009, our old Renault scenic ph 1 let us fall, so then, with only 1300 £ in the pocket, I looked for a safety car to carry on my little family (wife and 2 kids - a dog). When the Volvo 855 got out , I "felt in love" with this car, the design, the look. Every such things on this car pleased me. Since then, I drive Swedish.

Excepted one or two specifics technicals words, I've understood the all part your your explanation. Simple, clear. Thank you for that. The thing is, for me as I live in town, with no room to lay the car quietly waiting for me to work, no garage to be protected by weather conditions, I feel not comfortable if a such a trick like this would happen to me. But, I'm found of my car. I think I probably would fight like you have done.

I feel a bit uncomfortable at the approach of the reconstruction of my puzzle but I consider your last post as an encouragement to do the stuff. My Volvo dealer will receive the A/C compressor seals on Thursday, so everything should be in order for the weekend. Oddly, the A/C unit was empty of gaz when I've deposed it, and it seems to be the original Volvo part.Seals seem to be from march 1998.


To conclude, a last interrogation, if allowed : I still don't know, on this diesel engine where is the screw to purge cool heating circuit on the top of the engine.

Hope you will have a nice day.

VV70.

[Volvo V70 diesel]

Hy Foxes,

I go on the replacement of some parts of my car. After have searched, the right way to install the bracket which protect the oil filter seems to be as in the attachement.

The bracket of the oil filter :
a.SCREW -> THREAD OF THE OIL FILTER BRACKET -> THREAD OF THE PULLEY TENSIONER -> ENGINE

The tensioner belt uses two Allen screws :
a.the SHORT one goes to the TOP of the P-T.
b.the LONG one goes to the BOTTOM,

Cheers.

VV70

[Volvo V70 diesel]

Hy Foxes,

On this marvelous sunny but rather cold afternoon, I've found the time to re assembly my car. I've seen that some oil from the steering hose has felt down on the alternator. I've tried to clean as well without opening the thing. Have I a surprise to fear ?

I have to full the levels tomorrow afternoon and test.

I will do a tutorial if some interested. I imagine that to change this piece may not arrive often. But, in any case.

VV70

[doingitsideways]

Glad you've sorted the bracket.

Regarding the power steering fluid on your alternator - it'll probably be fine.
They're pretty tough units, mine has had all sorts spilled over it.
Providing you didn't pour 5 litres straight into the coil you'll be ok

Oh, your English is by far the worst we're seen.
Posting on a forum like this is good practice

Martin:
Thanks for the kind words, but I'm far from being any kind of expert.
Every day's a school day for me!

[Volvo V70 diesel]

Originally Posted by doingitsideways

Oh, your English is by far the worst we're seen.
Posting on a forum like this is good practice

Thanks a lot about this, I knew my efforts would be appreciated to their right value ! Not sure to be able to do worth...

:O)

VV70

[doingitsideways]

Originally Posted by Volvo V70 diesel

Thanks a lot about this, I knew my efforts would be appreciated to their right value ! Not sure to be able to do worth...

:O)

VV70

Meant to say your English is far from the worst we've seen.

It had been a long day!