l Make sure all personnel stand clear when operating boom to avoid injury to personnel.
l When testing hydraulic system, be sure boom is in stowed position as failure of system
may result in injury to personnel.
Steps 1 thru 5 are written for one
pressure relief valve, but apply to all
1 Adjust check valve. Refer to page 2-179.
2 Turn off hydraulic system (TM
3 Remove manifold tee tube cap (1) from
valve tube tee (2).
4 Install 500 psi (3448 Pa) oil pressure
tester on valve tube tee (2).