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Main Tank Float Switch and Conduit Installation (Type II) 500
28-21-71 Figure 402 (Sheet 1) May 01/03
Page 410
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Main Tank Float Switch and Conduit Installation (Type II)
May 01/03 Figure 402 (Sheet 2) 28-21-71
Page 411
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Main Tank Float Switch and Conduit Installation (Type II) 500
28-21-71 Figure 402 (Sheet 3) May 01/03
Page 412
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Main Tank Float Switch and Conduit Installation (Type II)
May 01/03 Figure 402 (Sheet 3) 28-21-71
Page 413
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Center Tank Float Switch Installation (Type II) 500
28-21-71 Figure 403 (Sheet 1) May 01/03
Page 414
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Center Tank Float Switch Installation (Type II)
May 01/03 Figure 403 (Sheet 2) 28-21-71
Page 415
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Center Tank Float Switch Installation (Type II) 500
28-21-71 Figure 403 (Sheet 3) May 01/03
Page 416
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Center Tank Float Switch Installation (Type II)
May 01/03 Figure 403 (Sheet 4) 28-21-71
Page 417
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Center Tank Float Switch Installation (Type II) 500
28-21-71 Figure 403 (Sheet 5) May 01/03
Page 418
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Center Tank Float Switch Installation (Type II)
May 01/03 Figure 403 (Sheet 6) 28-21-71
Page 419
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
Center Tank Float Switch Installation (Type II) 500
28-21-71 Figure 403 (Sheet 7) May 01/03
Page 420
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
7. AIRPLANES WITH TYPE II FLOAT SWITCH; Float Switch Installation (Fig. 402. Fig. 403)
A. Equipment
(1)
Puller -wire, to pull wires through the electrical conduit
(2)
Ohmmeter - to measure electrical continuity
(3)
Splices - moistureproof, to connect wires
B. Consumable Materials
(1) D00504 Grease, Petrolatum - VV-236
C. AIRPLANES WITH TYPE II FLOAT SWITCH;
Tank No. 1 or No. 2 Float Switch Installation Procedure (Fig. 402)
(1)
For the float switch in the tank No. 1 or No. 2, separate the float switch from the conduit and from the liner adapter sufficiently to slide the float switch cable into the bracket slot.
CAUTION: SEPARATE THE FLOAT SWITCH FROM THE CONDUIT JUST ENOUGH TO SLIP THE FLOAT SWITCH CABLE INTO THE BRACKET SLOT WHILE KEEPING THE LINER FROM SLIDING OUT OF THE CONDUIT. TOO MUCH SEPARATION CAN CAUSE LOSS OF MOISTURE SEAL IN THE CONDUIT.
(2)
Put the electrical cable for the float switch into the slot on the float switch mounting bracket.
(3)
Lubricate the O-ring (21) with grease, VV-P-236 and install it on the bulkhead union (20).
(4)
Put the bulkhead union with the O-ring (21) and retainer (22) into the hole in the front spar.
(a) Make sure the liner extends out of the union sufficiently to be attached to the coupling ring subsequently.
(5)
Install the float switch mounting nut (3) and the washer (13).
(a) Tighten the mounting nut (3) with your hand only.
(6)
Install the conduit captive nut (8).
(a) Tighten the conduit captive nut (8) with your hand only.
(7)
From out of the tank, install the washer (23) and the conduit mounting nut (18) on the bulkhead union (20).
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