Cessna 750 User manual

CESSNA AIRCRAFT COMPANY
MODEL 750
INTERIOR MAINTENANCE MANUAL AND ILLUSTRATED PARTS CATALOG
CONTENT Original Issue
Subject Forward Maintenance Parts
Lavatories
Aft Vanity ......................................................................................................... 25-40-01 ............... 25-40-02
Aft Bulkhead Closet ........................................................................................ 25-40-03 ............... 25-40-04
Water Barrier ................................................................................................... 25-40-05 ............... 25-40-06
Toilet Installation ............................................................................................. 25-40-07 ............... 25-40-08

CESSNA AIRCRAFT COMPANY
MODEL 750
INTERIOR MAINTENANCE MANUAL AND ILLUSTRATED PARTS CATALOG
Page 1
25-40-01 Original Issue
AFT VANITY - MAINTENANCE
1 General
CAUTION: Vanity cabinets incorporating electrical components must have electrical wire bundle(s)
properly routed and secured.
(1) Verify appropriate circuit breaker is disengaged before performing maintenance on any
electrical components or wiring.
(2) Secure and protect electrical wires to prevent fraying and contact with moving parts such as
drawers and hardware.
(3) Ensure clearance between electrical wiring and heat generating components.
(4) Ensure electrical wiring is not crushed or pinched removal/installation of the cabinets.
(5) Ensure electrical wiring insulation is not frayed and bare wires are repaired or replaced. Wire
bundles should be properly routed using grommets, necessary clamps and tie-straps.
2 Aft Vanity Removal/Installation (See Illustration)
A. Remove Aft Vanity.
(1) Disconnect battery and remove external power from aircraft.
(2) Disengage AFT VANITY circuit breaker for vanity, located in J-box in bottom of aft bulkhead closet
under lower, left-hand shelf. Lift handle and open shelf door. J-box has four (4) screws that hold cover
on. Remove cover and pull breakers.
(3) Empty water tank in vanity and replace (Refer to Aft Vanity Water System Operation below).
(4) Remove two (2) screws securing vanity to bulkhead closet. Remove top drawer and toilet-paper drawer
to access screws from inside vanity.
(5) Remove three (3) screws securing vanity to aft divider panel. Remove top, middle and lower drawers
to access screws from inside vanity.
(6) Remove left-hand aft divider to allow enough room to remove vanity (Refer to section 25-20-33, Aft
Divider Maintenance). Reposition passenger seat forward or remove as necessary to make room for
divider removal (Refer to section 25-20-21, Passenger Seat Maintenance).
(7) Remove plugs, bolts and washers securing closet to floorboard attach brackets and tag for
reinstallation.
(8) Remove vanity reveal panel by first removing PSU fascia panel (Refer to section 25-20-23, PSU
Installation Maintenance) and then disengaging hook and pile fasteners by pulling top of reveal panel
inboard. Lift panel up and out of channels on back of vanity to remove.
(9) Move vanity inboard by first tilting top inboard, then move bottom inboard enough to disconnect
electrical wiring and remove drain hose.
(10) Tag and disconnect electrical wiring.
(11) Disconnect hoses.
(12) Protect vanity and interior by covering with Rino-Hyde before removal.
CAUTION: Two people are required to maneuver vanity from aircraft without causing damage
to vanity or other furnishings.
(13) Remove vanity from aircraft without causing damage to interior furnishings.

CESSNA AIRCRAFT COMPANY
MODEL 750
INTERIOR MAINTENANCE MANUAL AND ILLUSTRATED PARTS CATALOG
Page 2
25-40-01 Original Issue
AFT VANITY WATER SYSTEM OPERATION - MAINTENANCE
B. Install Aft Vanity.
(1) Position vanity in aircraft near installed position.
(2) Remove Rino-Hyde protective covering and clean as needed.
(3) Identify and connect electrical wiring.
(4) Connect water hoses.
(5) With top of vanity tilted inboard, place bottom in against wall, then tilt top back into position.
(6) Install bolts, washers and plugs securing the closet to floorboard attach brackets.
(7) Replace left-hand aft divider (Refer to section 25-20-33, Aft Divider Maintenance). Reposition
passenger seat aft or replace if previously removed (Refer to section 25-20-21, Passenger Seat
Maintenance).
(8) Replace three (3) screws securing vanity to aft divider panel. Remove top, middle and lower
drawers to access screws from inside vanity.
(9) Replace two (2) screws securing vanity to bulkhead closet. Remove top and toilet-paper drawers
to access screws from inside vanity.
(10) Fill water tank in vanity and replace for water system testing (Refer to Aft Vanity Water System
Operation below).
(11) Connect battery and replace external power from aircraft.
(12) Engage AFT VANITY circuit breaker for vanity located in J-box in bottom of aftbulkhead closet
under lower, left-hand shelf. Lift handle and open shelf door. J-box has four (4) screws that hold
cover on. Push breaker in to engage.
(13) Check vanity lights and water heater for proper operation and evidence of shorting or overheating.
(14) Prime pump and check faucet for proper operation (Refer to Aft Vanity Water System
Operation on next page).
3 Operations and Inspections
A. Inspect Aft Vanity.
(1) Inspect vanity for nicks, cracks, dents and security of installation.
(2) Check doors and drawers for proper operation.
(3) Check switches and controls for evidence of arcing, shorts or overheating.
(4) Check controls for proper operation.
(5) Check heated drains for security, damage and proper operation.
(6) Check plumbing for leaks or corrosion.

CESSNA AIRCRAFT COMPANY
MODEL 750
INTERIOR MAINTENANCE MANUAL AND ILLUSTRATED PARTS CATALOG
Page 3
25-40-01 Original Issue
4 Aft Vanity Water System Operation
The vanity water system consists of a water tank, pump, water faucet and supply lines. The water tank is
located in the bottom-center compartment of the vanity and is easily removed for filling. The vanity switch
panel controls the temperature of the heater for the water tank.
CAUTION: If the aircraft is stored overnight or longer in temperatures below freezing, the vanity water system
must be drained to prevent pump failure or damage.
A. Drain Aft Vanity Water System.
Note: Make certain switch for hot water container is “Off” before attempting to remove water tank
from vanity. Vanity switch panel is located aft of vanity on bulkhead closet.
(1) Disconnect water tank by pressing release button to disconnect water line and empty water from
tank. Lift up slightly on front of hot water tank and slide inboard to remove.
(2) Reconnect empty water tank to system.
(3) Press water button to cycle the pump. Repeat until no water comes out of faucet for three
cycles of the water button.
(4) Disconnect water tank and empty any remaining water in tank and reconnect tank, or remove tank
from aircraft.
B. Prime Aft Vanity Water System.
Note: Make certain switch for hot water container is “Off” before attempting to replace water tank
into vanity. The vanity switch panel is located aft of vanity on bulkhead closet.
(1) Fill water tank with water and connect tank to system.
(2) Press water button to cycle pump. Repeat until water comes out of the faucet (the pump will
self prime).
(3) Check system for water leaks and security of installation.
5 Overboard Drain Operation
Note: For Overboard Maintenance Practices, refer to 38-30-02 WATER OVERBOARD DRAINS -
DESCRIPTION AND OPERATION in IPC.
A. Potable and wash water waste is drained from aft vanity basin through a flexible hose to an overboard
drain weld assembly. The overboard drain weld assembly is installed through the bottom of aircraft
fairing and is electrically heated to prevent ice formation that could block or impair normal drainage.
For overboard drain locations, refer to Chapter 6 in the IPC, Aircraft Drains Locations - Description
and Operation. Waste water from aft vanity wash basin and/or potable water source is released through
a heated overboard drain by simply opening the basin drain. 28 VDC electrical power from aft interior
junction box electrical circuit is used to heat overboard drains.
(1) Check to make sure water flows freely down drain (water will exit bottom of aircraft).
AFT VANITY WATER SYSTEM OPERATION - MAINTENANCE

Page 1
25-40-02 Original Issue
CESSNA AIRCRAFT COMPANY
MODEL 750
INTERIOR MAINTENANCE MANUAL AND ILLUSTRATED PARTS CATALOG
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