APU - High Oil Consumption (APS 3200)

TASK 49-00-00-810-979-A
APU - High Oil Consumption (APS 3200)

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 49-00-00-790-002	Leak Test of the APU
AMM 49-11-11-000-003	Removal of the Power Plant (APU) (APS 3200)
AMM 49-90-00-600-004	Check Oil Level and Replenish (APS 3200)

3. Fault Confirmation
Subtask 49-00-00-710-372-A ** ON A/C NOT FOR ALL

A. Do a visual check on the oil sight glass on the accessory drive gearbox:

4. Fault Isolation
Subtask 49-00-00-810-338-A ** ON A/C NOT FOR ALL

A. If the APU oil consumption is higher than the one shown in the guideline for the oil consumption of the APS3200 in service AMM 49-90-00-600-004:

Examine the APU externally for oil leaks on oil system components and oil lines AMM 49-00-00-790-002.

(1) If you find external oil leaks:

(2) If you do not find external oil leaks:

(a) If the fault continues:

Subtask 49-00-00-710-373-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:34:29 UTC