If the pump pressure exceeds a given value, the pressure relief valve opens and returns the excess oil into the oil reservoir.

 Fill Ports, Sight Glass and Magnetic Drain Plug
 Figure 003

 CES  STORAGE AND DISTRIBUTION ((GTCP 36-300)) - INSPECTION/CHECK

___________________________________________________________ R **ON A/C 001-003, 051-099, 401-499,
 TASK 49-91-00-210-001
 Check Lube and Alternator-Scavenge Filter Differential Pressure Indicator Position (Pop out not protruding) (GTCP 36-300)
 WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______ WHEN YOU DO THE MAINTENANCE TASK(S).
 1. Reason for the Job
__________________
 Refer to the MPD TASK: 499121-01
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s) No specific access platform 3.5 m (11 ft. 6 in.)
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-42-00-861-001 Energize the Ground Service Network from the External Power 24-42-00-862-001 De-energize the Ground Service Network Supplied from the External Power 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action 29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through
 the Ground Connector 52-41-00-010-001 Open the APU Doors for Access 24-23-51-000-001 Removal of the APU Generator 8XS (for corrective
 action) 24-23-51-400-001 Installation of the APU Generator 8XS (for corrective action)

 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
49-91-41-200-001 Remove and discard Alternator Scavenge Filter Element (8069KM) (GTCP 36-300) (for corrective action) 49-91-45-200-002 Remove and discard Lube Filter Element (GTCP 36-300) (for corrective action)
 3. Job Set-up
__________ Subtask 49-91-00-860-054
 A. Aircraft Maintenance Configuration
 (1)
 Energize the ground service network
 (Ref. TASK 24-42-00-861-001).

 (2)
 On the panel 25VU make sure that the APU MASTER SW p/bsw is OFF.

 (3)
 Make sure that there is a warning notice in the cockpit to tell persons not to start the APU.

 (4)
 Make sure that hydraulic systems are depressurized
 (Ref. TASK 29-00-00-864-001).

 Subtask 49-91-00-865-050
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41
 Subtask 49-91-00-010-050
 C. Get Access
 (1)
 Put the access platform below the APU access door 316AR.

 (2)
 Open the APU access doors 315AL, 316AR (Ref. TASK 52-41-00-010-001).

 (3)
 Set the LIGHT SW 11LJ to the ON position.

 4. Procedure
_________ Subtask 49-91-00-210-050
 A. Check Lube and Alternator-Scavenge Filter Differential Pressure Indicator Position
 (1)
 Do a visual check of the lube-pump filter differential-pressure indicator-button. Make sure that the indicator button is not extended.

 (2)
 Do a visual check of the alternator differential-pressure indicator-button. Make sure that the indicator button is not extended.

 NOTE : Replace the lube pump filter if the indicator button is
____
 extended (Ref. TASK 49-91-45-200-002).

 NOTE : Replace the alternator scavenge filter if the indicator button
____
 is extended (Ref. TASK 49-91-41-200-001).

 NOTE : If the differential pressure indicator of the lube pump filter
____ or the alternator-scavenge filter is extended, replace also the APU generator (Ref. TASK 24-23-51-000-001) and (Ref. TASK 24-23-51-400-001).
 5. Close-up
________ Subtask 49-91-00-410-050
 A. Close Access
　
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