I forgot to add that my trainer had banged on all the trailer drums. Then he set the trailer, released the tractor and banged on the tractor drums. The truck had been parked with the tractor brakes set and trailer released.
Even tho the trailer brakes were set the thing started rolling when he banged on the tractor. I'm guessing maybe ice had formed between the friction material and drum and prevented the brake from holding.
He cursed himself for forgetting to chock the wheels.
Never hurts to use chocks, but it can hurt if you don't.
Good thread.
I'm guessing we chock the wheels because we have to release the brakes before we tap them?
Since you are only attempting to free the trailer brakes, there is no need to chock the wheels. Leave the tractor brake set, only release trailer brakes.
Perfectly safe and absolutely frightening that a trainer didn’t know this leading up to narrowly escaping being run over by his own trailer.
I forgot to add that my trainer had banged on all the trailer drums. Then he set the trailer, released the tractor and banged on the tractor drums. The truck had been parked with the tractor brakes set and trailer released.
Even tho the trailer brakes were set the thing started rolling when he banged on the tractor. I'm guessing maybe ice had formed between the friction material and drum and prevented the brake from holding. He cursed himself for forgetting to chock the wheels.
Never hurts to use chocks, but it can hurt if you don't.