S 034-089

 (3)  
Disconnect the coupling from the vent tube inlet.

 NOTE: Discard the coupling O-rings.
____
 S 024-122
 (4)
Do these steps to disconnect the vent tube inlet (View A-A):

 (a)  
Support the vent tube inlet.

 (b)  
Remove the fasteners from the vent tube bracket support (four locations).

 NOTE: Keep the bolts, nuts and washers for the installation.
____
 (c)  Remove the vent tube inlet from the airplane.
 TASK 28-13-03-404-099
 5.  Vent Tube Inlet Installation (Fig. 402)____________________________
 A. Equipment
 (1)  
Bonding Meter (SWPM 20-20-00) Approved for fuel tank use

 B.
Consumable Materials

 (1)  
D00128 Petrolatum - Technical, VV-P-236

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 C. References
 (1)  
AMM 28-11-00/201, Fuel Tanks (Purging and Tank Entry)

 (2)  
AMM 28-11-03/401, Wing Surge Tank Access Door

 (3)  
AMM 28-11-00/801, Fuel Tanks

 (4)  
AMM 28-13-01/401, Fuel Vent Drain Valve

 (5)  
SWPM 20-20-00, Electrical Ground and Bond

 (6)  
AIPC 28-13-01

 D.
Access

 (1)  
Location Zone 555 Surge Tank, Front Spar to Rear Spar, Left Side 655 Surge Tank, Front Spar to Rear Spar, Right Side

 (2)  
Access Panel
 555AB Surge Tank Access Door
 655AB Surge Tank Access Door

 E.
Vent Tube Inlet Installation

 S 424-123
 (1)  
Install a vent drain on the vent tube inlet (if necessary) (AMM 28-13-01/401).

 S 114-101

 (2)  
Prepare the faying surfaces of the vent tube inlet and the bonding clamp for an electrical surface bond (SWPM 20-20-00).

 S 424-102

 (3)  
Install new O-rings lubricated with petrolatum, into the coupling.

 S 424-103

 (4)  
Put the vent tube inlet into its position.

 S 434-104

 (5)  
Loosely install the fasteners (bolts, nuts and washers) (four locations) to attach the vent tube inlet to the vent tube bracket support.

 NOTE: Do not tighten the fasteners.
____
 S 434-105
 (6)  
Install the coupling (AMM 28-00-00/201).

 (7)  
Tighten the fasteners at the vent tube bracket support.

 S 434-106
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 S 434-110
 (8)
Connect the bonding jumper and bonding clamp (SWPM 20-20-00).

 S 764-111

 (9)  
Measure the bonding resistance across the bonding jumper (SWPM 20-20-00).

 NOTE: The bonding resistance must not be more than 0.010 ohm.
____
 S 024-124
 (10)
 Install lockwire on the coupling.

 F.
Put the Airplane Back to Its Usual Condition

 S 864-120
 (1)  
Get out of the surge tank and close the surge tank
 (AMM 28-11-00/201).

 (2)  
Install the surge tank access doors (AMM 28-11-03/401).

 S 414-121
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