C. Prepare to Remove the Ball Valve
NOTE: For toilet systems with a ball valve in the drain line.
____ S 864-002
(1)
Pull the drain valve handle in the down direction which will open the ball valve and the drain valve at the same time.
S 174-003
(2)
Flush the toilet drain line with water (AMM 12-17-00/301) but do not add the chemical precharge.
S 494-021
CAUTION: MAKE SURE YOU PUT A PLASTIC COVER AND A CONTAINER UNDER THE
_______ BALL VALVE TO PROTECT THE ELECTRONIC EQUIPMENT. THE ELECTRONIC EQUIPMENT CAN BE DAMAGED IF IT GETS WET.
(3) Put a plastic cover and a shallow pan under the ball valve to protect the electronic equipment and contain the water (2-3 gallons) that can come from the drain line.
D. Remove the ball valve
S 864-035
(1) Push the drain valve handle on the service panel up which will close the drain valve and the ball valve at the same time.
NOTE: Make sure the drain valve in the toilet tank is closed.
____
S 684-006
(2) Allow the fluid to drain.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH FORWARD LAVATORY WASTE ú
38-32-91
DRAIN BALL VALVE ú ú 02 Page 401 ú Mar 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
SUPPORT
TOILET BRACKETTANK
SUPPORT STRUCTURE
CONTROL CABLE SERVICETOILET TIE ROD PANELDRAIN (2 LOCATIONS)LINE BALL VALVE
SEE A
BOLT
NUT WASHER TIE ROD CLAMP SUPPORT
(4 LOCATIONS) (2 LOCATIONS) BRACKET BALL
VALVE
CLAMP
ACTUATOR LEVER
CONTROL CONTROL CABLE CABLEFWD COTTER PIN WASHER (2 LOCATIONS)
BALL VALVE
A
Forward lavatory Waste Drain Ball Valve Removal/Installation Figure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH FORWARD LAVATORY WASTE ú
38-32-91
DRAIN BALL VALVE ú ú 03 Page 402 ú Jul 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 034-023
(3)
Disconnect the two clevis that are attached to the actuator lever on the ball valve.
S 034-007
(4)
Disconnect the two tie-rods that attach to the ball valve.
S 034-024
(5)
Remove the bolt, the nut and, the washer (4 locations) that attach the ball valve bracket to the support structure bracket.
S 034-010
(6)
Move the two clamps on the ball valve to the left and the right side.
S 024-027
(7)
Remove the ball valve.
TASK 38-32-91-404-012
3. Ball Valve Installation (Fig. 401)
_______________________
A. Consumable Materials
(1) A00247 Sealant - BMS 5-95, Type I, Class B.
B. Access
(1) Location Zone
205 Electronic Equipment
C. Procedure
S 424-013
(1)
Install the ball valve.
S 434-014
(2)
Install the two clamps on the left and right sides of the ball valve.
S 434-015
(3)
Install the bolt, the washer, and the nut (4 locations) that attach the ball valve bracket to the support structure bracket.
NOTE: Apply the sealant to the bolt threads, the washer, and the
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