Low Bleed Temperature of the Engine 2 in Descent

TASK 36-11-00-810-895-A
Low Bleed Temperature of the Engine 2 in Descent

1. Possible Causes

SENSOR-EXCHANGER OUT TEMP, ENG 2 [6HA2]
wiring
VALVE-HP BLEED [4000HA]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 36-11-00-740-001	BITE Test of the BMC 1(2)
ASM 361102
AMM 36-11-17-000-001	Removal of the Heat-Exchanger Outlet-Temperature Sensor
AMM 36-11-17-400-001	Installation of the Heat-Exchanger Outlet-Temperature Sensor
AMM 36-11-51-000-040	Removal of the High Pressure Bleed Valve
AMM 36-11-51-000-042	Removal of the High Pressure Bleed Valve
AMM 36-11-51-400-040	Installation of the High Pressure Bleed Valve
AMM 36-11-51-400-042	Installation of the High Pressure Bleed Valve

3. Fault Confirmation
Subtask 36-11-00-710-237-A ** ON A/C NOT FOR ALL

A. Test
(1) Do the BITE test of the BMC 2 AMM 36-11-00-740-001.

4. Fault Isolation
Subtask 36-11-00-810-145-A ** ON A/C NOT FOR ALL

A. If the BITE test gives no maintenance message:

no maintenance is necessary.

(1) If the BITE test gives the class 3 maintenance message:
TEMP SENSOR 6HA2

Replace the SENSOR-EXCHANGER OUT TEMP, ENG 2 [6HA2] AMM 36-11-17-000-001 and AMM 36-11-17-400-001.

(a) If the fault continues:

Do a check and repair the wiring ASM 361102 between:
. pin 4 of the engine 2 exchanger output temperature sensor (6HA2) and pin AA/10B of the BMC 2 (1HA2)
. pin 2 of the engine 2 exchanger output temperature sensor and AA/9B of the BMC 2
. pin 1 and the ground.

(2) If the BITE test gives the class 3 maintenance message:
HP BLEED-V 4000HA2

Replace the VALVE-HP BLEED [4000HA] of the engine 2 AMM 36-11-51-000-040 and AMM 36-11-51-400-040.

Subtask 36-11-00-810-145-B ** ON A/C NOT FOR ALL

A. If the BITE test gives no maintenance message:

no maintenance is necessary.

(1) If the BITE test gives the class 3 maintenance message:
TEMP SENSOR 6HA2

Replace the SENSOR-EXCHANGER OUT TEMP, ENG 2 [6HA2] AMM 36-11-17-000-001 and AMM 36-11-17-400-001.

(a) If the fault continues:
- Do a check and repair the wiring ASM 361102 between:
. pin 4 of the engine 2 exchanger output temperature sensor (6HA2) and pin AA/10B of the BMC 2 (1HA2)
. pin 2 of the engine 2 exchanger output temperature sensor and AA/9B of the BMC 2
. pin 1 and the ground.
(2) If the BITE test gives the class 3 maintenance message:
HP BLEED-V 4000HA2

Replace the VALVE-HP BLEED [4000HA] of the engine 2 AMM 36-11-51-000-042 and AMM 36-11-51-400-042.

Subtask 36-11-00-710-238-A ** ON A/C NOT FOR ALL

B. After the subsequent flight, make sure that the fault does not continue.

[Rev.8 from Aug 2018] 2026.04.04 04:33:48 UTC