(3)
Look at the quantity indicator on the hydraulic reservoir and make sure:
-that the fluid level is correct, add fluid as necessary (Ref. TASK 12-12-29-611-001).
(4)
Look at the air pressure gage on the hydraulic reservoir and make sure:
-that the air pressure in the reservoir of the Blue System is 50 psi, pressurize the hydraulic reservoir as necessary (Ref. TASK 29-14-00-614-002).
(5)
Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
Subtask 12-36-29-010-099
B. Get Access
(1)
Open the access door 197EB.
(2)
Open the access door 197FB.
4. Procedure
_________
(Ref. Fig. 317/TASK 12-36-29-991-017) Subtask 12-36-29-615-052
A. Clean the Fluid in the Blue Hydraulic System WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE
_______
LANDING GEAR.
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES
_______ ARE CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
(1)
Prepare the HYDRAULIC PURIFIER (HSPA181-380J) as given in the subsequent steps:
(a)
Make sure that the hydraulic fluid content indicator (2) shows the maximum fill level.
-If necessary fill the reservoir of the HYDRAULIC PURIFIER (HSPA181-380J) with HYDRAULIC FLUIDS (Material No. 02-003) through the fill connection (21).
(b)
Connect the electrical connection (20) of the HYDRAULIC PURIFIER (HSPA181-380J).
(c)
Set the main switch (15) to the ON position:
-The white power on light (19) comes on.
(d)
Make sure that the red light (18) does not come on.
-If the red light (18) comes on, the rotary direction of the internal electrical pump is not correct. Change two phases of the electrical connection.
(e)
Turn the switch (14) to the START position.
(f)
Set the switch (16) to the ON position.
(g)
Fill the reservoir of the HYDRAULIC PURIFIER (HSPA181-380J) with HYDRAULIC FLUIDS (Material No. 02-003) through the fill connection (21) until the hydraulic fluid quantity is in the middle between the MIN and MAX mark of the hydraulic fluid content indicator (2).
(h)
Make sure that all values shown on the gages:
-
inlet oil temperature (5),
- outlet pressure (6),
-
inlet pressure (7) and
-chamber vacuum (8)
are in the given limits.
(i)
Turn the switch (14) to the AUTOMATIC position.
(j)
Close the fill connection of the (21) HYDRAULIC PURIFIER
(HSPA181-380J).
(k)
After approximately 30 minutes:
-
Set the switch (13) to the OFF position.
-
Set the main switch (15) to the OFF position.
(l)
Put a container below the valve (4).
(m)
Open the valve (4) to remove collected water.
(2)
Do the cleaning procedure of the Blue hydraulic system as follows:
(a)
Make sure that the hydraulic system of the HYDRAULIC PURIFIER (HSPA181-380J) is depressurized. The low pressure indicator (10) and the high pressure indicator (9) must show 0.
-If necessary depressurize the hydraulic system by opening the drain valves (3).
(b)
Make sure that the drain valves (3) are closed.
(c)
Connect the hydraulic lines (1) of the HYDRAULIC PURIFIER (HSPA181-380J) to the aircraft connectors
-2006GM suction
-2008GM delivery.
(d)
Set the main switch (15) to the ON position:
-The white power on light (19) comes on.
(e)
Turn the switch (14) to the START position.
(f)
Set the switch (16) to the ON position.
(g)
Make sure that all values shown on the gages:
-
inlet oil temperature (5),
- outlet pressure (6),
-
inlet pressure (7) and
-chamber vacuum (8)
are in the given limits.
(h)
Turn the switch (14) to the AUTOMATIC position.
(i)
Set the main pump switch (17) to the ON position.
(j)
Make sure that the low pressure indicator (10) shows the same pressure as shown on the gage of the Blue hydraulic reservoir. If necessary, adjust the pressure with the pressure control valve (11).
