Front of Lorry would be in air if it if tail was shut as nut at top of ram would hold it
This is from driver abuse over long time sending it up to top hard
The body should never be tipped high enough with that much of a load in it to over center the body and put strain on the top nut
Yes I agree driver abuse but I have had a driver on tar put the body all the way up as this happens
They always raise the body until you can hear the load shift then drop it slightly and not raise it until the chutes are empty
Plus you can never strain the nut at the top by sending it up to hard
Only by reverse and slam breaks on or by leaving tailgate closed and tipping to high
In theory with a decent driver the top nut shouldn't have be there as should never take any load as the body's always have weight forwards, they are single acting rams so if banging them to the end of there travel alone was to damage them then the body would be weighted in the wrong direction to self lower.