Vehicle & Technical > Defender

broken prop shaft...having trouble with drive!

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topless matt:
There is no reason why you cant use it for a long period of time provided you dis-engage and re-engage the diff lock from time to time.

bogie:
Dont know the exact ins and outs  but a mate had the same broblem,carried on without a care in diff lock and destroyed the transfer box. As diff lock is selectable there must be a good reason for it being that way or you would not have it??? For the sake of repairing or replacing a prop its a big gamble,only takes 30 mins to replace a uj.

Saffy:
putting it down as a landy urban myth until someone can give technical explanation as to why.

as for why selectable difflock... with the diff locked (i.e it no longer acting as a differential) and driving around curves and corners your going to get axle wind up (which will damage tranny in end) and tyre scrub if on high traction surfaces like asphalt (not a problem in mud or bumpy roads because wheels will spin out) . With the diff present ( diffLOCK not engaged) the front vs rear axle wheels are allowed to rotate at different speeds which is a characteristic of driving around a bend and no wind up is suffered.   None of that applies when you haven't one of the propshafts on.

V8MoneyPit:
I'm with Saffy on this. I can't figure any reason why it should be a problem with one of the propshafts removed.

You have drive out of the transfer box into the diff. The diff is locked, so nothing happening internally, Then, it is transferred out through the rear shaft.

There is a problem the other way round.... if you constantly spin the diff, for example on brake rollers at an MOT station, it accelerates wear in the diff pin and planet gears.

Of course, I stand to be corrected!

MuddyMike:
It will do no harm at all as long as you drive gently and don't use low ratio. The system is designed to spread the power over both axles, you are now putting it all through one axle so a light right foot is the order of the day. Nothing will get "wound up" as one responder suggested as you still have an open diff in the rear axle. I once drove an uprated V8 110 over 500 miles on front drive only, now that was interesting (particularly as I was towing) but no harm was done.
Having rear drive only in high box is basically the same as series Land rovers were built.

Mike

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