Inlet Guide-Vane Actuator Fault (APS 3200)

TASK 49-00-00-810-943-A
Inlet Guide-Vane Actuator Fault (APS 3200)

1. Possible Causes

fuel leaks
wiring
INLET GUIDE-VANE ACTUATOR (8014KM)
INLET GUIDE VANE MECHANISM
FUEL CONTROL UNIT (8022KM)
FUEL FLOW DIVIDER (8024KM)

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ESPM 2052210
ESPM 2053210
ESPM 205321A
AMM 49-00-00-710-008	Operational Test of the APU
AMM 49-23-51-000-003	Removal of the Inlet Guide Vane Actuator (APS 3200)
AMM 49-23-51-400-003	Installation of the Inlet Guide Vane Actuator (APS 3200)
AMM 49-23-51-710-001	Push/Pull Test of the Inlet Guide Vane Mechanism (APS 3200)
AMM 49-32-11-000-002	Removal of the Fuel Control Unit (APS 3200)
AMM 49-32-11-400-002	Installation of the Fuel Control Unit (APS 3200)
AMM 49-32-12-000-002	Removal of the Flow Divider (APS 3200)
AMM 49-32-12-400-002	Installation of the Flow Divider (APS 3200)
ASM 496102

3. Fault Confirmation
Subtask 49-00-00-710-313-B ** ON A/C NOT FOR ALL

A. Check/Test
(1) Push the IGV operating rod with the quick-release pin towards the CLOSE position

NOTE: As an alternative you can operate one of the LH BOOST pumps to support the APU fuel pump during the operational test. The additional pressure by the LH BOOST pump may close the IGVs.

(2) Do the operational test of the APU AMM 49-00-00-710-008.

NOTE: During the operational test of the APU, carefully examine the fuel lines from the fuel control unit to the inlet guide-vane actuator:

fuel leaks are not permitted, correct/replace as necessary.

4. Fault Isolation
Subtask 49-00-00-810-298-B ** ON A/C NOT FOR ALL

A. Maintenance Action
(1) If the APU Last Leg Report gives the maintenance message:

IGV ACTR (8014KM):
Fault Code Number: 62 or 63

do a check and repair the wiring from the ECB (59KD) AB/G8, G9, E12, E11, E8, E9 to the INLET GUIDE-VANE ACTUATOR (8014KM) P21/1, 2, 3, 4, 5, 6 ASM 496102 ESPM 2052210 ESPM 2053210 ESPM 205321A.

(a) If the fault continues:

replace the INLET GUIDE-VANE ACTUATOR (8014KM) AMM 49-23-51-000-003 and AMM 49-23-51-400-003.

(2) If the APU Last Leg Report gives the maintenance message:

IGV ACTR (8014KM):
Fault Code Number: 118

do the Push/Pull Test of the INLET GUIDE VANE MECHANISM AMM 49-23-51-710-001 .

(a) If the fault continues:

do a check and repair the wiring from the ECB (59KD) AB/E12, E11, E8, E9 to the LVDT P21/3, 4, 5, 6 ASM 496102 ESPM 2052210 ESPM 2053210 ESPM 205321A.

1 If the fault continues:

do a check of the fuel line for damage and replace if necessary.

(3) If the APU Last Leg Report gives the maintenance message:

IGV ACTR (8014KM):
Fault Code Number: 139

do the Push/Pull Test of the INLET GUIDE VANE MECHANISM AMM 49-23-51-710-001 .

(a) If the fault continues:

do a check and repair the wiring from the ECB (59KD) AB/E12, E11, E8, E9 to the LVDT P21/3, 4, 5, 6 ASM 496102 ESPM 2052210 ESPM 2053210 ESPM 205321A.

1 If the fault continues:

do a check of the fuel line for damage and replace if necessary.

2 If the fault continues:

replace the FUEL CONTROL UNIT (8022KM) AMM 49-32-11-000-002 and AMM 49-32-11-400-002.

a If the fault continues:

replace the FUEL FLOW DIVIDER (8024KM) AMM 49-32-12-000-002 and AMM 49-32-12-400-002.

b If the fault continues:

replace the INLET GUIDE-VANE ACTUATOR (8014KM) AMM 49-23-51-000-003 and AMM 49-23-51-400-003.

Subtask 49-00-00-710-314-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:34:27 UTC