(g)
Install a new lubricated O-ring on the end cap.
(h)
Put the rubber shock cushion smoothly on the end cap.
(i)
Put the end cap on the ULB.
(j)
Tighten the end cap until the cap flange touches the ULB body.
NOTE: Use hand force only on the spanner wrench.
____
TASK 31-24-09-712-023
5. Underwater Locator Beacon - Operational Test
____________________________________________
A. Equipment
(1)
42A12 Ultrasonic Test Set (alternative)
Dukane Corporation
2900 Dukane Drive
St. Charles, IL 60174
(2)
PL1 Ultrasonic Test Set (alternative)
Dukane Corporation
2900 Dukane Drive
St. Charles, IL 60174
(3)
PL3 Ultrasonic Test Set (alternative)
Dukane Corporation
2900 Dukane Drive
St. Charles, IL 60174
(4)
ATS-260 Acoustic Test Set (alternative)
Datasonics INC.
1400 Route 28A
Cataumet, MA 02534
B. Procedure
S 712-068
(1) If you have a 42A12 test set, do this test of the ULB:
(a)
Put the test set approximately three feet from the ULB.
(b)
Set the ON-OFF-GAIN control on the test set to the middle position. 1) Make sure you hear sounds through the earphone on the test
set.
(c)
Set the TUNING CONTROL to 37 |1 KHz.
(d)
Set the INPUT SELECTOR switch to the INT position.
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31-24-09
ALL ú ú 10 Page 208 ú Jul 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
(e) Make sure the test set operates correctly.
1) Shake a set of keys or some coins in front of the microphone to make sure the test set operates.
NOTE: This will supply ultrasonic sound.
____
a) Make sure you hear sounds through the test set earphone.
(f) Use a piece of tape to attach a wire or other conductive material to the ULB case and the center of the water switch.
NOTE: This will make a short circuit from the center of the
____ water switch to the outer part of the ULB.
1) Make sure you hear a pulsed tone at 1-second intervals.
(g)
Remove the wire or the conductive material from the ULB case and center of the water switch. 1) Make sure you do not hear a pulsed tone.
(h)
Set the ON-OFF-GAIN control switch to the OFF position.
S 712-069
(2) If you have a PL1 test set, do this test of the ULB:
(a) Use a piece of tape to attach a wire or other conductive material to the ULB case and the center of the water switch.
NOTE: This will make a short circuit from the center of
____ the water switch to the outer part of the ULB.
(b)
Put the end of the test set against the ULB, approximately one inch from the water switch.
(c)
Push and hold the operation switch on the test set. 1) Make sure the BEACON ACTIVE WHEN FLASHING light flashes 2) Remove the wire or conductive material from the ULB case
and center of the water switch. 3) Make sure the BEACON ACTIVE WHEN FLASHING light does not flash.
(d)
Release the operation switch on the test set.
(e)
Remove the test set.
S 712-166
(3) If you have a PL3 test set, do this test of the ULB.
(a)
Put the end of the PL3 test set against the ULB water switch. 1) Make sure you hear a tone. 2) Make sure the LED light flashes.
(b)
Remove the PL3 test set from the ULB.
S 712-070
(4) If you have an ATS-260 test set, do this test of the ULB:
(a) Put the test set clip on the ULB.
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