L is for long (56" front axle set back compared to the VNM series with a 51" front axle set back), M is for medium....
The figure 42 is a conventional 4x2 tractor configuration i.e. single rear axle or a 6 wheeler.
The figure 64 is a 6x4 tractor configuration, i.e. with tandem rear axle, called a ten wheeler or the most common tractor you see around for pulling trailers....
The T stands for "tractor"..
So you end up with VNL 64 T 61 0
The 61 for the sleeper size....in inches...
the zero ??? I dont know why they throw in the 0...
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