2001 Mitsubishi Montero timing belt tensioner

The tensioners are pretty strong and unlikely to break. It doesn't much matter anyway. If the tensioner broke the belt jumped off or broke. When that happens, the camshaft(s) stop turning but the crankshaft doesn't. With valves opened when the piston reaches the top, out of time, the piston(s)collides with the valve(s) damaging either the valve or the piston or both. Most commonly it's the valves. You'll find out when you pull the cylinder head if there's piston damage. The recommended interval on this vehicle for timing belt replacement is 60,000 miles.