am buying a cav turbo. what can b done to make transfer box more durable?
Give it a oil change, change the accumulator, make sure all the tyres are the same tread and within 2mm of each other. Rotate them on a regular basis.
If you are going for serious power go for a sports box. All above available from www.cav16.co.uk
change the tx box oil using vaux synthetic (click cavweb how2 link below)
change the pas oil if grey/black
Change the accumulator ~£100 every 6 years/54K miles
As far as the Transfer Box goes have a look at the Workshop Manual - the sections likely to interest you most are the 'buying guid', 'Dos' & Dont's' and the 'camber kit explained'.