-
for water drain valve 95QM, open access panel 196BB.

 4. Procedure
_________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 (Ref. Fig. 305/TASK 28-25-00-991-062)
 **ON A/C 301-399,

 (Ref. Fig. 305A/TASK 28-25-00-991-062-A)
 **ON A/C ALL

 Subtask 28-25-00-650-063-A
 A. To Drain Remaining Fuel with PURGING TOOL (97A28002117002) or WATER DRAIN PURGER (98A28104000002)(center tank only)
 NOTE : The PURGING TOOL can be used to drain remaining fuel from the wing
____ and center tanks, but does not prevent leaks. It is recommended that you use the WATER DRAIN PURGER to drain the remaining fuel from the center tank.
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 To Drain Remaining Fuel
 Figure 305/TASK 28-25-00-991-062

R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 28-25-00Page 332 1201-299, 401-499, 1Aug 01/05 1 1 1CES 1

 To Drain Remaining Fuel
 Figure 305A/TASK 28-25-00-991-062-A 
R 1EFF :  301-399,  1  28-25-00 Page 333 
1  1  May 01/05
 1  1
 1CES  1

 (1) To drain the remaining fuel from the wing tanks and the center tank with the PURGING TOOL (97A28002117002) do the procedure as follows:
 (a)
 On the PURGING TOOL fully retract the nut (4), the screw (3) and the plunger assembly (1).

 (b)
 Install the PURGING TOOL. Put the hexagonal end of the bush (2) into the base plate of the applicable water drain valve.

 (c)
 Turn the bush (2) through 30 deg.

 (d)
 Turn the nut (4) until it touches and seals against the wing surface.

 (e)
 Put the end of the hose into the container.

 (f)
 Hold the bush (2) and turn the screw (3) to the end of its travel. This causes the plunger (1) to open the drain valve and the fuel to flow.

 (g)
 When the fuel flow stops, hold the bush (2) and turn the screw

 (3)
 until the drain valve closes.

 (h)
 Turn the nut (4) until it is clear of the wing surface.

 (i)
 Turn the bush (2) back through 30 deg. and remove the purging tool from the applicable water drain valve.

 (j)
 Examine the water drain valve for leakage. Leaks are not
 permitted.

 NOTE : This step is very important because access to the center
____ tank water drain valves 94QM and 95QM is not easy.
 (2) To drain the remaining fuel from the center tank with the WATER DRAIN PURGER (98A28104000002) do the procedure as follows:
 (a)
 Install the WATER DRAIN PURGER. Put the end of the plunger (5) into the hole in the base plate of the applicable water drain valve.

 (b)
 Push the WATER DRAIN PURGER up until the sealing ring (6) touches and seals against the bottom of the water drain valve.

 (c)
 Push the drainer (7) up until the plunger (5) causes the drain valve to open and the fuel to flow. Hold the WATER DRAIN PURGER in the up position to keep the drain valve open.

 1EFF : ALL 1 28-25-00Page 334 1 1 May 01/05R 1 1 1CES 1

 (d)
 When the fuel flow stops or the bottle of the WATER DRAIN PURGER is full, carefully lower and remove the WATER DRAIN PURGER. This causes the water drain valve to close.

 (e)
 If necessary, empty the WATER DRAIN PURGER bottle and do steps

 (b)
 thru (d) again until there is no fuel flow.

 (f)
 Examine the water drain valve for leakage. Leaks are not permitted.

 NOTE : This is very important because access to the center tank
____ drain valves 94QM and 95QM is not easy.
 5. Close-up
________ Subtask 28-25-00-410-076
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Close the applicable access panels:

 -for water drain valve 94QM, close access panel 195BB
 -for water drain valve 95QM, close access panel 196BB. Subtask 28-25-00-942-055
 B. Removal of Equipment
 (1)
 Remove the safety barriers.

 (2)
 Remove the warning notice(s).

 (3)
 Remove the access platform(s).

 (4)
 Remove the ground support and maintenance equipment, the special and standard tools and all other items.

R 1EFF : ALL 1 28-25-00Page 335 1 1 May 01/05 1 1 1CES 1 TASK 28-25-00-650-003- 01

 To Drain Remaining Fuel from the Wing Tanks and the Center Tank
　
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