I have a b8200d with a D950 engine. My tachometer/ hour meter stopped working. Drive assy went bad. The drive assy has a seal that keeps engine oil from lubing the bevel gears. Bevel gears must be lubed therefore the assy died of old age and No lubrication. new assy $61.00 + labor. My inclination is to pull the drive cable and squirt oil into the new drive assy on a scheduled basis. Anyone else doing this?