300 TDI Crank pulley loose and wobbly

Hi all,
Could you please take a look at the video below of my Landys crank pulley?

I had to leave the Landy in a remote location because I could not drive with it in this state any further.
My question is this: I am not certain what the assembly looks like behind the pulley. Could the crank end be damaged because if the pulley grinding on it? Is there a chance that I could get a new pulley and this will be it? I read somewhere about some damper fitting ... I am not sure exactly how everything fits together. I cannot take it off as the car is in a remote village ... so I either have to make a call to take a new pulley up and replace it, or tow the Landy down for a crank overhaul.

Regards,
Fred

looks like the keyway has failed

flat said:

looks like the keyway has failed

Click to expand...

Hi,
Thank you for your reply. Does this mean the crank is damaged, or could I get away by simply replacing the pulley? I guess it is difficult to guess ?

You would need to take it off and look see why if it's just the key that's sheared MAYBE but if the crank has rotated inside the pulley then the crank may be damaged - you would need to look.

Just undo the bolt and take the pulley off get a better idea

Its difficult to see exactly what has happened there, but, it does look like the pulley is still whole, and is loose on the crank nose... if that has been like that for any length of time, I would suspect that the crank nose will be damaged.

You will have to take the pulley off to see, unfortunately.

I hope its the pulley which has sustained the damage, but I'm sorry to say that I fear worse.

Best of luck with it.

As said above the key has gone as a minimum and also by the looks of it the pulley retaining bolt, however as the pulley also has a lot of lateral play I would suspect that it and possibly the crank is also damaged. One other point to note is that that pulley also holds the cambelt toothed pulley on the crank, if it has been rattling around for a while there is a good chance that the cambelt pulley has also been moving which may have caused some damage to the belt. If you can get the crank pulley sorted and the vehicle back to civilisation I would then recommend pulling the cambelt front cover off to check the condition of the belt in case it has been fraying.

Frederik Lotter said:

Could the crank end be damaged because if the pulley grinding on it?

Click to expand...

I would say most definitely the nose end of the crank will be damaged, pretty much the same thing happened to the 300Tdi in my '97Disco, ended up having to cut a new keyway as the "woodruff" key had flogged right into one side of the crank keyway.
I used a 1mm thick cutting disc and a small die chisel to run the keyway right to the end of the crank, fortunately the crank timing sprocket was still sitting tight on the shaft so it was just a matter of make a full length "feather" key, fit a replacement pulley/balancer with a lot of "Loctite" and tighten up the pulley retaining bolt as tight as I could fog it up. The repair has lasted for about 5years and 150,000 klms so far, no dramas, the pulley runs a bit wobbly but it seems to have no real detrimental effects on the engine.