VW Passat B5 1.8T 1997 AEB: Head Gasket Repair, Timing Setting, & Carbon Cleaning Guide

Question

Hello, unfortunately the head gasket broke down, or the head itself is damaged, so I will have to unfold it and check. By the way, I wanted to clean the pistons from carbon deposits, so when I pull the heads I will have to turn the shaft to have individual pistons at the top. How to determine...

szymitsu21 · Accepted Answer

Mark on the shaft and roller. That's all.

Pedros050 · Answer

Hello. This model has a belt and the marks are on the camshaft gear and the shaft gear.

*michal* · Answer

Thanks for the help. this engine has a double timing, if you can call it that.

Pedros050 · Answer

This is exactly how the chain on the camshafts at the back.

*michal* · Answer

Does the position of the gear marked on the photo matter? Because when washing the engine, I washed away the dots previously made with the marker. What role does this wheel play?

Oh, this photo is an illustrative photo, it's not mine, but it's the same engine

Pedros050 · Answer

It doesn't matter how the wheel will be positioned.

*michal* · Answer

And then more questions arose
After setting the rollers and screwing the head, I was about to put on a belt and something breathed me to check if the mark on the flywheel also covers. As it turned out, there is no sign there.
Which window do you need to look at? because I see three
Is setting the crankshaft for marks from a plastic housing and a pulley a good idea?
What does the sign on the flywheel look like in this engine, because in the audi 80, the polonaise was zero, or dash and nothing here?
Below are illustrative photos

And this is how it looks at the back, after setting the shaft in front of the characters (this white line on the tooth is mine)

By the way, take a look at the rollers, are they well positioned,

Pedros050 · Answer

On the gear and on the casing there is a notch in hole No. 2 only then it is visible as is the shaft in position that 1 and 4 piston at the top.

*michal* · Answer

as I was assembling, pistons 1 and 4 were at the highest point, and the signs matched the front, but probably this stroke was not and that is why it came out like that. (okay i think?)
So what do I need to dismantle the shafts to close the valves and turn the shaft once more by 360 "and again as a sign?

Pedros050 · Answer

This is exactly how it should be as they write in the book so that then someone in the future would not wonder if it has a well-timed valve or not.

Added after 38 [minutes]:

As for the photos with rollers, it is on the fourth cylinder where the chain is to be on the side and this is how it should look. This means that the valves are starting to open.

robokop · Answer

At the same time, pay attention to the correct positioning of the rollers towards each other - minimal misalignment of characters, caused by whether the wrong setting, or wear of the slides and the chain causes throwing errors of the adjuster system (lack of proper correlation of CKP-CMP sensors) - a annoying defect.

*michal* · Answer

The tensioner is new. I can't check the rollers now, because the car is at my friend's garage, but are you suggesting that they are badly folded? In the book, I fix myself, it was written only that the marks on the rollers and bearing housings were to be covered, and between them were to be 16 links. For me, this square on the suction shaft gently escapes outside (towards the suction manifold) relative to this arrow on the bearing housing, but it seemed to me that there are 16 links.
and returning to the flywheel should this sign look like?

Photo borrowed from the internet "forums.kilometermagazine"

If I don't see any sign in this window No. 2, does it mean that I need to set the crankshaft over again?

lukashb · Answer

Yes exactly.

VW Passat B5 1.8T 1997 AEB: Head Gasket Repair, Timing Setting, & Carbon Cleaning Guide

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