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Half way through cambelt change - fuel pump help!

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Hello

I'm half way through changing the cambelt on my vrs cr170 (CEGA) engine, and am a little confused with the fuel pump.

I've got the locking tool set and have locked off the crank and cam shafts in TDC. The pdf instruction guide I'm following shows a locking tool being used on the high pressure fuel pump pulley, but mine is way out, compared to the diagram.

Can anyone advise the procedure for correcting, or do I leave it where it is?

Pics to follow...

Many thanks

If you continue turning the engine over is there no point that it lines up? (and with everything else in line)

 

I always presumed the pump didn't matter as it just supplies fuel at a constant pressure to the fuel rail and did not need any timing. Havn't changed a belt on a common rail yet

Edited by SuperbTWM

  • Author

1129x1c.jpg

This is mine. The little lug doesn't move as I turn the engine (prior to belt removal)

  • Author

This is how the instructions show it;

i22jb4.png

Just looks like an anti rotation device to me for when your fitting the new belt

Are you 100% sure the crank and cam are locked in the right place ? Its possible its had a belt at some point and the pump wasnt lined up corectly. Im sure the pump pully is same size as crank so should move the same.

Looking at it again, that dot on the pulley lines up with the lug does it not? The fact that lug is in a slightly different place to the diagram probably isn't an issue

Take the belt off and then pin the pump before refitting the belt.

  • Author

Thanks for the replies.

I'm confident the crank and cam are in the correct locations.

So, I rotate anti clockwise to line the lug and hole up, then insert the pin and refit the belt?

Sure the u shape lug lines with the hole in the back plate. It should spin with the pully. Quote i think it should

Yes pal thats all you can do

If you continue turning the engine over is there no point that it lines up? (and with everything else in line)

 

I always presumed the pump didn't matter as it just supplies fuel at a constant pressure to the fuel rail and did not need any timing. Havn't changed a belt on a common rail yet

It does need to be timed correctly on the VW lump.

It does need to be timed correctly on the VW lump.

Thanks   :thumbup:

Is she up and running again ?

  • Author

All sorted, many thanks for all the replies, as always!

Slight issue, possibly caused by my incompetence, possible caused by poorly made locking tools!

After the belt was fitted, I spun the engine and checked the timing... All was well.... Until I then removed the timing pin from the camshaft pulley. Despite being gently pushed in, it was jammed solid in the hole. Long story short; it snapped, I swore lots and had to start again (after taking the new belt and camshaft pully off, to drill out the broken pin).

Other than that, the rebuilding was much quicker than I thought, and it's running perfectly now.

Thanks again :)

Nice one

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