TM 10-3930-659-34 4-54.  ACCUMULATOR CHARGING (Con’t). CHARGING WARNING Pressure  stored  in  accumulator  is  approximately  500  psi  (3448  kPa).    Ensure  that  accumulator pressure  is  relieved  before  charging  accumulators.    Failure  to  follow  this  warning  may  result  in serious injury or death to personnel. NOTE • It is necessary to hold boot of one brake pedal with hand while opposite brake pedal is pumped. Movement inside boot will be felt as opposite brake pedal is pumped.  Accumulator pressure is relieved when movement stops. • Each brake pedal should be pumped a full 75 times even if no movement is felt after pumping brake pedal several times. 1. boot  (3)  of  left  brake  pedal  (4)  with  hand  and pump  right  brake  pedal  (1)  75  times.    Release boot. 2. boot  (2)  of  right  brake  pedal  (1)  with  hand  and pump  left  brake  pedal  (4)  75  times.    Release boot. 4-203