5) Remove drain plug wrench.
CAUTION: IF DRAIN PLUG WRENCH DOES NOT DISENGAGE EASILY, THE DRAIN PLUG IS NOT PROPERLY LOCKED IN POSITION. REPEAT DRAIN PLUG REMOVAL AND REINSERTION STEPS UNTIL PLUG IS PROPERLY LOCKED.
(3) On airplanes without drain plug, disconnect flush line and waste drain hose.
J. On airplanes with OPEN/CLOSED levers,
close flapper valve and disconnect service cart as follows.
(1)
Rotate CLOSE lever clockwise to close flapper valve and move OPEN lever counterclockwise and then clockwise to lock flapper valve in closed position.
(2)
Disconnect toilet service cart flush line, waste drain hose and Y-fitting (if so equipped from service panel).
K. Connect chemical hose from toilet service cart to flushing connection and replenish the system with a minimum of 3 gallons of a recommended chemical precharge.
NOTE: A charge in excess of 4 gallons may result in overfilling if toilet usage is considerable.
L. Disconnect chemical hose and reinstall cap on flush line.
M. Clean and dry all service panel components and doors.
N. Check seal in drain line cap for aging, cuts, wear, or other signs of deterioration. Deteriorated seals should be replaced. Check end of drain tube for nicks, dents, scratches or cracks. Any irregularity in the end of the tube should be smoothed to prevent leakage.
CAUTION: DETERIORATED SEALS CAN RESULT IN TOILET FLUID LEAKAGE IF TOILET DRAIN VALVE HAS LEAKED.
O. Close drain tube cap.
NOTE: On airplanes equipped with drain cap having lockout pin, the drain cap will not close if toilet drain plug has not been reinstalled.
P. Close and secure service panel door.
Q. Restore airplane to normal configuration.
4. Servicing Panel Cleaning
A. Equipment and Materials
(1)
Manual alkaline emulsion cleaner (Ref. 12-40-0, Cleaning and Washing)
(2)
Soft-bristle brush or sponge
B. Clean Panel
(1)
Periodically wash panel with water and cleaner. Use soft-bristle brush or sponge as necessary to remove contamination.
(2)
Dry with clean cloth.
5E3
May 01/01 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 12-17-0 Page 205
PERIODIC LUBRICATION - GENERAL
1. General (Ref 20-30-2)
A. Certain bearings and bushings used throughout the airplane have Teflon bearing surfaces and do not require additional lubrication.
CAUTION: ONLY BEARINGS AND BUSHINGS PROVIDED WITH LUBRICATION FITTINGS SHOULD BE LUBRICATED, SINCE LUBRICATION OF BEARINGS AND BUSHINGS CONTAINING TEFLON WILL CAUSE DETERIORATION OF THE TEFLON AND REDUCE BEARING LIFE.
B. Information regarding airplane lubrication, such as item to be lubricated, lubricant to be used and method of application are provided in the following lubrication subjects of this section.
C. Lubrication equipment, such as grease guns, brushes and oil cans must be clean and free of everything but the lubricant involved during use.
D. Lubrication blocks are used to locate the component or unit to be lubricated. Each block is divided into two sections, one section calls out the method of application, the other section calls out the type of lubricant.
E. Where access to lubrication points is not obvious, the access panel number is called out directly above or below the lubrication callout. Refer to the appropriate section on access doors and panels in this chapter.
F. Figure 201 shows examples of lubrication blocks that may be used in the following lubrication subjects. If more detailed lubrication instructions are required, detailed lubrication instructions will be provided.
H29659
500 Lubrication Block Examples
May 01/01 Figure 201 12-20-0
Page 201
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
G. Lubrication of sealed ball and roller bearings having lubrication provisions requires care to prevent seal blowout during lubrication. A restrictor type nozzle used on the grease gun will aid in preventing seal blowout by limiting the rate of grease flow. The flow of grease should be discontinued at the first evidence of seal deformation or grease seeping from the bearing.
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