TM 10-3930-659-20 10-5. BRAKE VALVES PRESSURE TEST (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. 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 (5) and preformed packing (6) from tee (9).  Discard preformed packing. 4. Install two preformed packings (10 and 12) on tee (11). 5. Install quick coupler (13) and adapter (14) on tee (11). 6. Install tee (11) on tee (9). 7. Install hose (5) on tee (11). 8. Install hose (7) and pressure gage (8) on adapter (14). 9. Start engine and run at slow engine idle speed (see TM 10-3930-659-10). 10. Press right brake pedal (1) and note reading on pressure gage (8).  Reading must be 1350-1600 psi (9308-11032 kPa).  If brake valve pressure is not within specification, perform fork/brake hydraulic pump standby pressure test (see paragraph 17-3).  If standby pressure test is within specification, replace brake valve (see paragraph 10-9). 11. Shut down engine (see TM 10-3930-659-10). 12. Repeat steps 1 and 2. 13. Remove pressure gage (8) and hose (7) from adapter (14). TA706939 10-16