A mate has a Defender 90 TD5 and asked me a few questions I don't have answers for.

90 rear diffs: Do the TD5 90's have fine spline or coarse splines? He has a number of NOS spare long axles with the same casting number in the end of the flange but are coarse spline.

TD5 oil pump: He's heard of the problems with the D2 TD5 dropping the oil pump gear, (which was fixed with Locktite) when did the thread lock become standard in Defender production?

Puma spud shaft lubrication (his wife's car): Do the Puma Defenders need regular re-lubrication of the spud shaft (shaft between the Getrag box and the LT230)? What time-frame?