1. Variator belts:

As reported in Pyne (1984), the variator belt was changed twice (at 788 km and 1600 km) whilst towing moderate loads. We do not consider this excessive and are not surprised that one field party using Grizzlys this season did not experience this problem as their total mileage was only approximately 450 km, and another party changed their belts at approximately 500 km (J. McConchie, pers. comm.).