F.  External Surface and Doors
CAUTION:  DO NOT PERMIT THE REMOVER TO BECOME DRY. DO NOT PERMIT THE REMOVER TO TOUCH THE ACRYLIC MORE THAN 60 MINUTES. DO NOT PERMIT THE REMOVER TO TOUCH THE HIGH-STRENGTH STEEL PARTS (180,000 PSI AND OVER).
(1)  
Apply a layer approximately 20 mils thick of Ardrox 7050-W remover and permit a dwell time of at least 10 minutes.

(2)  
Use high pressure water that is less than 140°F to rinse the area.

(3)  
Remove the tape from the control cabin windows and windshields, external openings, doors, hatches and nose radome.

(4)  
Lubricate all the external doors (Ref 12-25-21, 12-25-41, 12-25-51, and 12-25-91).

(5)  
Visually examine the door seals for flat spots or deterioration.

(6)  
Do a check of the internal and external door handles on the entry and service doors for the correct torque loads.

(7)  
Operate the internal and the external handle many times.

NOTE:  Use the internal and the external handle to make sure the operation of the handles are smooth.
500 
Jun 20/93  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  10-12-0 Page 227 

G. Hydraulic System
(1)
Do a check of all the hydraulic system components and replace them if it is necessary.

NOTE: To replace a component, follow the applicable maintenance manual procedure.

(2)
Supply pressure to the hydraulic system and do a check for leaks (Ref 29-11-0).

(3)
Service the hydraulic system reservoirs (Ref 12-12-0)

(4)
Service the parking brake accumulator (Ref 12-15-11).

(5)
Bleed and do a test of the hydraulic system:

(a)
The Main (Left, Right and Center) Systems (Ref 29-11-0)

(b)
The Hydraulic Fluid Quantity Indicating System (Ref 29-33-0)

(c)
The Hydraulic Pressure Indicating System (Ref 29-31-0)

(d)
The Hydraulic Fluid Overheat Warning System (Ref 29-32-0)

(6)
Replace these hydraulic system filters:

(a)
The pump case drain module filters (Ref 29-11-41)

(b)
The return module filter (Ref 29-11-111)

H. Equipment/Furnishings
(1)
Remove the dust covers from the seats, if installed.

(2)
Fill the toilet tanks and cycle flush systems to make sure they operate correctly.

(3)
Do a test of all the galley and lavatory plumbing and drains for air locks and leaks.

(4)  
Replace the carpets and seats if they are not installed.

(5)  
Do a check of the pressure of the escape slide bottle and rearm all the automatic escape slides.

(6)  
Do a check of the portable fire extinguishers:

(a)  
Weigh the portable fire extinguishers.

(b)  
If the weight is less than the quantity shown on the nameplate, recharge or replace it.

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10-12-0 Page 228  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Sep 01/02 

I.  Landing Gear
(1)  
Remove the wheel chocks and covers from all the wheels.

(2)  
Make sure the shock struts of the landing gear are serviceable (Ref 12-15-31, 12-15-41).

(3)  
Inflate the tire to the correct pressure (Ref 12-15-51).

(4)  
Remove the MIL-C-16173, Class 2 per BAC5835.

(5)  
Remove the unwanted MIL-G-21164 grease from the inner cylinders of the shock struts.

(6)  
Lubricate all the joints with lubrication fittings with BMS 3-33 (Ref 12-25-131, 12-21-11, and 12-21-21).

(7)  
Tow or taxi the airplane sufficiently before a flight to remove flat spots from the tires.

(8)  
Lubricate the landing gear doors.

(9)  
Visually examine the landing gear door seals for flat spots or deterioration (Ref 32-12-01).

J.  Oxygen System
WARNING:  FOLLOW PROCEDURES AND CAUTIONS IN 12-15-21, OXYGEN – SERVICING WHEN YOU REMOVE AND INSTALL THE OXYGEN CYLINDERS. IF YOU ARE NOT CAREFUL, YOU CAN CAUSE INJURY TO PERSONS.
(1)  
Do a check of the oxygen system for corrosion.

(2)  
Flush the plumbing for the crew oxygen system with dry nitrogen or clean air.

(3)  
Install the portable oxygen bottles and the crew oxygen bottle (with the regulator).

(4)  
Open the high pressure valves on the oxygen supply cylinders.

(5)  
Install oxygen masks for the crew.

NOTE:  You must examine crew oxygen masks that have been in storage for more than 3 months. The rubber and plastic components must be in good condition.
　
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