TM 10-3930-659-20 10-10.    LEFT BRAKE VALVE-TO-FRONT BRAKE HOSE AND FITTINGS REPLACEMENT (Con't). 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 Hold  boot  (3)  of  left  brake  pedal  (4)  with  hand and   pump   right   brake   pedal   (1)   75   times. Release boot. 2. Hold boot (2) of right brake pedal (1) with hand and    pump    left    brake    pedal    (4)    75    times. Release boot. 3. Remove hose (13) and preformed packing (14) from tee (16) on left brake valve (15).  Discard preformed 4. Remove hose (13) and preformed packing (12) from bulkhead union (11).  Discard preformed packing. packing. 5. Remove hose (9) and preformed packing (18) from bulkhead union (11).  Discard preformed packing. 6. Remove nut (17) and bulkhead union (11) from plate (10). 7. Remove hose (9) and preformed packing (8) from adapter (7).  Discard preformed packing. 8. Remove adapter (7) and preformed packing (6) from front differential (5).  Discard preformed packing. b. INSTALLATION 1. Install new preformed packing (6) and adapter (7) on front differential (5). 2. Install new preformed packing (8) and hose (9) on adapter (7). 3. Install bulkhead union (11) on plate (10) with nut (17). 4. Install new preformed packing (18) and hose (9) on bulkhead union (11). TA706949 10-30