Today was the road test...the crane behaved has it should..it pulled well even though its weight is 62 tons
Picture below while out on the road.
Although we went down a steep hill the crane driver never touched the main brakes has the crane had great braking power with the exhaust brake and gearbox intarder..The gearbox has its own oil cooler which shares the same coolant has the engine...this cooler had failed and contaminated the engine coolant with oil causing the overheat and the rest is history..
Below is the brown sludge in the coolant expansion tank.
The end...