61-101-00802.EF2 (REV. G) CH. 2
January 7, 2015 Page 7 of 44
(12) Allow test set to stabilize. Sometimes the reading never completely
stabilizes. If the reading is in the acceptable range after 30 seconds it
should be considered OK.
(13) Verify the test set reading is less than 50nS at each position except
SIG/RTN.
(14) With switch rotated to SIG/RTN, verify a test set “over range” reading
of “1”.
(15) Release fuel panel select switch.
Note: If a test does not meet specification, repeat test to verify
readings. If wrong reading remains, isolate fault by referring to
the aircraft wiring drawings and disconnecting the interconnect
fuel line receptacle. Then, repeat test. Verify that the reading
with the fuel panel select switch in any position is less than
005 nS. If fault remains, the problem may be with the a/c
wiring between interconnect fuel line receptacle and the
indicator connector. Correct the fault and perform the
Insulation Test (Individual Probes). (See section 2.
INSULATION TEST (INDIVIDUAL PROBES). When all
problems are corrected, perform the System Insulation Test
again.
(16) Set T/S ON/OFF switch to OFF.
(17) Open circuit breakers
(18) Disconnect a/c battery.
Note: If testing the opposite side, repeat procedure.
E. Disconnecting/Reconfiguring
(1) Disconnect the test set from the aircraft harness.
(2) Reconnect the aircraft wiring plug to the indicator.
(3) Return the aircraft to its original configuration.
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