Hi folks anyone tell me is it possible to change alternator clutch without removing from engine, and if so any tips, or special tools required. Cheers

https://www.drive2.ru/l/5318512/

Thanks alex, had a look it is the clutch thats knackered, I've seen thesplined tool on ebay, do I also need a key to hold the shaft from turning. Cheers

In the link above are presented (through pictures) all tools needed and how they are used in order to remove that clutch from the alternator shaft, in situ.

I didn't know there was a clutch in the alternator drive. What is its purpose?
I have one on one of my bikes but that is just a breakaway clutch to prevent overloading the drive (excessive torque) as the revs can rise so quickly. Unlikely to pose a problem on a 4 pot diesel I suspect.

From Topix:

Quote:

The generator pulley incorporates a one-way clutch that reduces Noise, Vibration and Harshness (NVH), and improves the life of the accessory drive belt. The one-way clutch allows the belt to drive the pulley without slip occurring, but prevents the generator from driving the belt during transients in engine speed ('belt whip') due to the high rotational inertia of the generator internal components.

ALEX would you happen to know size of tool seems to be quite a lot different sizes

pab wrote:

From Topix:

Quote:

The generator pulley incorporates a one-way clutch that reduces Noise, Vibration and Harshness (NVH), and improves the life of the accessory drive belt. The one-way clutch allows the belt to drive the pulley without slip occurring, but prevents the generator from driving the belt during transients in engine speed ('belt whip') due to the high rotational inertia of the generator internal components.

So the opposite of the bike really - used when the revs drop more quickly than generator inertia allows.

No. From my knowledge, on i6 is a mechanical connection to the crankshaft through some helical gears and then a direct coupling.
See below:

Click image to enlarge

So perhaps not needed in an inherently smoother engine?

some additional info if anyone interested in this.
http://www.decouplerpulley.com/files/Alter...logies.pdf

Thanks enjoyed that

Managed to change pulley on alternator without removing, tool I got from ebay was toolong , cut off 1/2 drive socket from tool, filed 2 flats on tool, got piece of steel rod and bored hole in side of rod , fittedtool into hole in rod ., it made perfect holding tool, worked first time!