3. Job Set-up
__________ Subtask 38-14-43-860-051
A. Aircraft Maintenance Configuration
(1)
Make sure that the ground service network is energized from the external power (Ref. TASK 24-42-00-861-001).
(2)
Make sure that the potable water tank is drained (Ref. TASK 12-24-38-680-001).
Subtask 38-14-43-865-052
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and
tagged -------------------------------------------------------------------------------PANEL SERVICE IDENT. LOCATION -------------------------------------------------------------------------------
2001VU WATER SYS - QUANT IND 1MA B06 2001VU WATER SYS DRAIN 1MP B05
Subtask 38-14-43-560-050
C. Preparation for Installation
(Ref. Fig. 401/TASK 38-14-43-991-001)
(1)
Clean the component interface and/or the adjacent area.
(2)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(3)
If removed attach the motorized fill/overflow-drain valve 8MA (13) to the bracket (12).
(a)
Put the insulation plates (18) in position.
(b)
Put the motorized fill/overflow-drain valve (13) on the bracket and install the washers (17) and the bolts (16).
(c)
Do not fully tighten the bolts (16) at this time.
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4. Procedure
_________
(Ref. Fig. 401/TASK 38-14-43-991-001) Subtask 38-14-43-420-051
A. Installation of the Motorized Fill/Overflow-Drain Valve 8MA
(1)
Installation of the motorized fill/overflow-drain valve 8MA (18).
(a) Remove the blanking plugs and the blanking caps.
(2)
Put the motorized fill/overflow-drain valve 8MA (18) in position.
(a) Install the bolts (16), the washers (17), the washers (4) and the nuts (5).
(3)
Installation of the bonding strap.
(a)
Put the bonding strap (12) in position.
(b)
Install the screw (13) and the nut (11).
(c)
Protect the bonded connection (Ref. TASK 20-28-00-912-004).
(4)
Installation of the control cable.
(a)
Put the control cable (8) in position.
(b)
Install the pin (9) the washers (10) and the washer (7).
(c)
Install a new cotter pin (6).
(5)
Installation of the distribution lines.
(a)
Put the overflow lines in position and connect the connections
(1) and (15).
(b)
Put the fill/drain lines in position and connect the connections
(2) and (14).
(6)
Make sure that the electrical connectors are clean and in the correct condition.
(7)
Connect the electrical connector 8MA-A (3) to the fill/overflow-drain valve 8MA (18).
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Subtask 38-14-43-860-050
B. Preparation for Test
(1)
Fill the potable water system with water (Ref. TASK 12-15-38-613-001).
(2)
Pressurize the potable water system (Ref. TASK 38-10-00-614-001).
(3) Examine the motorized fill/overflow-drain valve 8MA for leaks. Subtask 38-14-43-865-051
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit
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