Pajero Owners Club of South Africa

My 1997 2.8 tdi pajero lwb with manual transmision have a terible shudder when I am accelerating from 0 while turning 60degrees or more to anyone direction. Had cluth and propshaft checked but these are still OK. Someone advised I should check the gearbox and engine mountings. Does this make sence and if so what should I check for? Vehicle got 540 000 problem free km on the clock. (Had turbo serviced twice).
Could it be the limited slip dif that needs maintenance?

has the difflock not engaged?

jack up both rear tyres. Block one and try to turn the other. If it doesn't your difflock locked.

Mine doesn't have a rear difflock. Could it be the front one. How should I check that?