Unsatisfactory Air Pressure in the Air Supply System

TASK 38-42-00-810-802-A
Unsatisfactory Air Pressure in the Air Supply System

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 38-41-00-820-001	Adjustment of the Pressure Reducing and Relief Valve
AMM 38-41-43-000-001	Removal of the Pressure Reducing Valve
AMM 38-41-43-400-001	Installation of the Pressure Reducing Valve
AMM 38-42-00-710-001	Operational Test of the Auxiliary Air Supply System.
AMM 38-42-00-720-001	Functional Test of the Pressure Switch
AMM 38-42-16-000-001	Removal of the Pressure Switch
AMM 38-42-16-400-001	Installation of the Pressure Switch
AMM 38-42-51-000-001	Removal of the Compressor
AMM 38-42-51-400-001	Installation of the Compressor

3. Fault Confirmation
Subtask 38-42-00-710-054-A ** ON A/C NOT FOR ALL

A. Test
(1) Do a test of the auxiliary air-supply system AMM 38-42-00-710-001.

4. Fault Isolation
Subtask 38-42-00-810-053-A ** ON A/C NOT FOR ALL

A. If the test is not satisfactory:

(1) If the test is not satisfactory:

(2) If the fault continues:

(3) If the fault continues:

(4) If the fault continues:

5. Close-up
Subtask 38-42-00-710-055-A ** ON A/C NOT FOR ALL

A. Do the test as given in paragraph 3. A. to check the correct operation (no maintenance message is shown).

[Rev.8 from Aug 2018] 2026.04.04 04:34:17 UTC