any ideas mk drive line crunching

[chrisandthebeast]

Hi Guys just wondering if someone would have any ideas. I bought a new toy (MK patrol) for weekend fun and took it up some tough hills today. Now there is a high pitched grinding noise in the driveline. The noise does not happen when stationary and get worse as I increase in speed. I assumed a uni but they look fine all be it 27years old. Any ideas? could this be my rear diff?

[Avo]

check to see if you still have the brake disc cover on,if not or maybe even if so check to see if no dirt has got between the brake pads and the disc...If it was this you'd think it wouldn'y last long but as it would grind away but would be easy to check...

[GQ TANK]

Does it make the noise in 2wd & 4wd

Does the sound like the noise is coming from the front or back

If you brake does it go away

If you pull on the hand brakea little does the noie se change pitch