I only use the locking bar when checking the holding pressure of a single brake too make sure a single brake will hold the car if one brake fails ,I put the car on the safety's then sling it put a Chicago hitch on the counter weight ropes pick the counter weight for rope slack on drive sheave block up the counter weight or hang it and if the hoisting beam is still in place use chain fall and trolley to pick the motor and swing it out from behind the rail if your over two hundred pounds you'll cave the car top in so I wouldn't put that sort of weight on the car if at all possible maybe this helps just wondering why is the motor being pulled ?.
