MountainD
Technical Excellence Contributor
Digging into my alternator issue today, pulling off the belts and noticed the front pulley was loose. I thought the extra rattle sound was valve lash at first, but now I know. Zipped off the pulley/damper to find a buggered keyslot in the damper. That explains the looseness. But you can see in the pic below that the woodruff key has been banging into the pulley and has carved out a full notch:
What is particularly weird to me is the engagement length looks supremely short. I looked at the key in the crank:
Thing is, I expected the key slot in the crank to be longer and to have a wrong length key, or possibly a sheared key...or something. I can't believe that this is the entire length of engagement. Is that correct for an 11L Defender 200TDI crank? Maybe it is normal, just not sure... Either way, time to clean stuff up.
What is particularly weird to me is the engagement length looks supremely short. I looked at the key in the crank:
Thing is, I expected the key slot in the crank to be longer and to have a wrong length key, or possibly a sheared key...or something. I can't believe that this is the entire length of engagement. Is that correct for an 11L Defender 200TDI crank? Maybe it is normal, just not sure... Either way, time to clean stuff up.