Loss of the Accumulator Yellow-Pressure Indication on the Triple Indicator (Electrical Failure)

TASK 32-44-00-810-805-A
Loss of the Accumulator Yellow-Pressure Indication on the Triple Indicator (Electrical Failure)

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 29-24-00-863-001	Pressurize the Yellow Hydraulic System with the Electric Pump
AMM 29-24-00-864-001	Depressurize the Yellow Hydraulic System
AMM 29-32-11-000-004	Removal of the Hydraulic Pressure Transducer
AMM 29-32-11-400-004	Installation of the Hydraulic Pressure Transducer
ASM 324401
AMM 32-44-21-000-001	Removal of the Brake Yellow Pressure Triple Indicator
AMM 32-44-21-400-001	Installation of the Brake Yellow Pressure Triple Indicator
AWM 324503

3. Fault Confirmation
Subtask 32-44-00-865-052-A

A. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	L/G/Y BRK/PRESS/IND	61GG	C10
** ON A/C NOT FOR ALL
49VU	ABCU &/Y BRK/PRESS IND	61GG	C10

Subtask 32-44-00-860-052-A

B. Pressurize the Yellow hydraulic system
AMM 29-24-00-863-001

Subtask 32-44-00-700-050-A

C. Test
Make sure that there is no accumulator Yellow-pressure indication on the triple indicator.

4. Fault Isolation
Subtask 32-44-00-810-054-A

A. If the test confirms the fault:

Replace the HYDR. PRESSURE TRANSMITTER [3068GN] AMM 29-32-11-000-004 and AMM 29-32-11-400-004.

(1) If the fault continues:

Replace the IND-BRK YELLOW PRESS TRIPLE [60GG] AMM 32-44-21-000-001 and AMM 32-44-21-400-001.

(a) If the fault continues:

Do a check for a ground signal at pins A/F, B of the pressure transducer (3068GN) ASM 324401.

1 If there is no ground signal:

Repair the wiring from the pressure transducer (3068GN) pin A/F,B to the ground ASM 324401.

2 If there is a ground signal:

Do a check for continuity from the pressure transducer (3068GN) pin A/A to the terminal block (7528VT) pin 2/J AWM 324503.

a If there is no continuity:

b If there is continuity:

Do a check and repair the wiring from the pressure transducer (3068GN) to the triple indicator (60GG): pins A/D, E to pins A/D, E ASM 324401.

Subtask 32-44-00-700-051-A

B. Test
Make sure that there is an accumulator Yellow-pressure indication on the triple indicator.

5. Close-up
Subtask 32-44-00-860-050-A

A. Depressurize the Yellow hydraulic system
AMM 29-24-00-864-001.

[Rev.8 from Aug 2018] 2026.04.04 04:31:43 UTC