__________________
Self Explanatory
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 container 10 l (2.6416 USgal)
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 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
Configuration before Maintenance Action 52-41-00-010-001 Open the APU Doors for Access 49-91-44-991-002 Fig. 402
3. Job Set-up
__________ Subtask 49-91-44-860-056
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)
Put 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 49-91-44-865-058
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 49-91-44-010-053
C. Get Access
(1)
Put the access platform in position below the APU access doors 315AL and 316AR.
(2)
Open the APU access doors 315AL, 316AR (Ref. TASK 52-41-00-010-001).
(3)
Set the LIGHT control switch 11LJ to the on position.
4. Procedure
_________
(Ref. Fig. 402/TASK 49-91-44-991-002) Subtask 49-91-44-020-051
A. Removal of the Thermal By-pass Valve
(1)
Put a container below the thermal by-pass valve (6) and oil tubes (9).
(2)
Remove bolts (3), lift the oil tube retainer (2) and remove the oil tubes (9) from the thermal by-pass valve (6), let the oil drain into the container.
(3)
Remove and discard the oil tube packing (1).
(4)
Hold the thermal by-pass valve (6), remove bolts (8) and washers (7).
(5)
Remove the thermal by-pass valve (6) from the oil cooler (4), let the oil drain into the container.
(6)
Remove and discard the packing (5).
(7)
Put blanking plugs/caps on the open tube ends, on the oil cooler and on the thermal by-pass valve.
Thermal By-Pass Valve
Figure 402/TASK 49-91-44-991-002
CES TASK 49-91-44-400-002 Installation of the Thermal By-Pass Valve (GTCP 36-300) WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______ WHEN YOU DO THE MAINTENANCE TASK(S).
WARNING : DO NOT LET OIL STAY ON YOUR SKIN FOR A LONG TIME AS IT CAN CAUSE
_______ INJURY.
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific access platform 3.5 m (11 ft. 6 in.)
No specific Torque Wrench : range 5.00 to 35.00 lbf.in
(0.05 to 0.40 m.daN)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 03-002 GB DEF-STAN 91-101 LUBRICATING OIL TURBINE ENGINE SYNT BASE (Ref. 20-31-00)
Material No. 04-014 USA MIL-PRF-907 HIGH TEMPERATURECOMPOUND (Ref. 20-31-00)
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