This guide is very good and when I changed timing belt aux belt tensioner and water pump there was a few things I didn't ask, but all worked out in the end. It is now timing belt change time again so I just wanted to clear some things up.

 

1 The guide mentions setting the timing to Top Dead Centre (TDC) by turning the spline on front right side of engine behind wheel arch plastic that you remove. To be honest I could not detect much change in resistance when rotating. Also, would not all the 4 cylinders of the 1.9tdi be at different positions. 

 

I am uncertain of what TDC means I guess. 

 

I think this step was instructed in case timing lock tool dislodged.

 

 

2 Water pump - The water pump simply pushes horizontally into right side of engine. Is there any recommendations on sealant? I just went the rubber seal of water pump and smooth surface of car with coolant (has that glycol greasiness).

 

I didn't fancy silicone sealant dislodging and gunking up coolant system or causing a leak.

 

Thanks

Top dead center is the point when piston 1 is at its highest point, and on the compression stroke. Assuming piston 1 is first in the firing order.

 

Make sure the cam locking pin is FULLY inserted, in the "guide" picture its only half in!.

 

Im pretty sure the water pump has an o-ring please don't cover it in silicon.

 

 

Edited 23 March, 20215 yr by Gt4thomas

12 hours ago, Gt4thomas said:

Make sure the cam locking pin is FULLY inserted, in the "guide" picture its only half in!.

 

Im pretty sure the water pump has an o-ring please don't cover it in silicon.

Nice one, that's what I did last time.

 

I noticed the pin went further than photo. I slowly cranked back forth to check it inserted correctly.

 

O ring - yes, has one. No silicone check.

 

Thanks

You need to check and adjust the torsion value to do a complete job, all the ones I have done needed some fine tuning to get the torsion value correct.