I have used a large syringe (100ml, bought from boots) to remove oil from an inaccessible place in the past. I forget from which of many vehicles... you may struggle a little with groil due to the viscosity. If you can remove the grease nipple and apply suction through the hole (my syringe came with several plastic ends), with patience, wheel waggling and possibly a little heat to soften the grease... You could try pushing in diesel, waggling and sucking out, but there may be weird stuff in the diesel that will eat your bushes... someone else may advise?
Either that or buy some waterproof trousers!
May 10, 2017 - 8:12AM
Re: Overfilling the steering box
The only other option I can think of is to loosen the steering box side plate and let it leak for a while. Obviously retighten and check adjustment before you drive the car - no offence intended!
I think this might be possible in situ.
Incidentally, I think monster syringes are available for emptying modern sumps that have no drain plug.