Usually the DMF doesn't cause a clutch failure, but replacing the clutch without the flywheel is a no-no...
A DMF is basically a flywheel made of 3 parts. An inner disc which bolts to the crank; a outer ring which has the teeth for the starter and the friction surface for the clutch plate; and a rubber filler which joins the two taking out small vibrations from standard clutch operation.
How expencive? About £400-£450 for the flywheel making a + labour clutch change around £800-£1300 depending on how difficult the job is. 1.9JTD should be closer to £800, some of us ex 2.4JTD owners paid the bigger number!
Creeping along in heavy traffic is stated as a possible risk as the constant on / off of high torque on a hevily laden vehicle is quite stressful to it.
I've heard recently somewhere (can't remember where) that dual mass flywheels can be damaged by doing alot of creeping along in 1st gear in traffic.
does anyone know if this is true?