TEST BRAKES (FUNCTIONAL TEST)
Hydraulic Test Stand Type D6A, D5B, or Other Source
of 1000 Psi
Medium Helicopter Repairer
Off Helicopter Task
High pressures used in testing
hydraulic components can cause line
rupture or component failure. Only
qualified personnel shall operate,
service and maintain hydraulic
test equipment. Use heavy plastic
shielding, 1/2 inch thickness or more,
when applying pressures over 250
psi, to prevent injury to personnel.
Procedure is same for all brakes.
Install brake disk (1) between brake linings (2
and 3) (Task 3-74).
Connect test stand hose fitting (4) to brake (5).
Apply 935 psi to brake (5) for 2 minutes. There
shall be no leaks.
Apply and release pressure 10 times. Check
that brake disk is free when pressure is released.
Keep brake in static condition for 2 minutes.
There shall be no static leaks.
Disconnect test stand hose fitting (4) from brake
END OF TASK