Correct Answer And Feedback

a pressure loss it will not open, thereby preventing the flow of

the hydraulic fluid preventing the door from closing. (Page 7,

para 1)

Hydraulic brake.

System pressure on the supply line to the stacker hydraulic motor

causes the brake to release. If there is a pressure loss, the

brake will engage, preventing the stacker tray from falling.

(Page 7, para 4 and Page 8, para 1)

1550 psi.

The main pressure relief valve opens and relieves back to the

hydraulic reservoir when pressure exceeds 1550 psi.

(Page 11,

para 3)

Closed.

The dump valve must be closed.

If the dump is open, it will

allow the hydraulic fluid to return to the reservoir.

pressure will build and the backup hydraulic pump will not engage

and the hydraulic circuits will not function. (Page 12, para 6)

On.

The MASTER switch must be in the on position. You must give the

hydraulic fluid in the actuator and lines a path back to the

reservoir when you manually open the rear door and force the

fluid to move. With electric power available, you can properly

position directional control valve spool using the solenoid and

electricity. (Page 14, para 8)

OD1703

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