A. Removal of the Engine-Pump Pressure Switch
(1)
Disconnect the electrical connector 3074GD-A from the pressure switch (15).
(2)
Put protective covers on the electrical connector and on the switch (15).
(3)
Remove the bolt (5), the washers (35), (40) and the nut (30) from the bonding clamp (45).
(4)
Remove the bonding jumper (50) and the clamp (45) from the switch (15).
(5)
Disconnect the hydraulic tube (25) from the pressure switch (15). NOTE : Use a second wrench to hold the pressure switch (15) when you
____
loosen the coupling nut on the tube.
(6)
Remove the two bolts (5) and the clamp (10) from the pressure switch (15).
(7)
Remove the pressure switch (15) from the engine.
(8)
Put the protective covers on the pressure switch and the tube (25).
Engine-Pump Pressure Switch
Figure 401/TASK 29-13-17-991-902
1EFF : ALL 1 29-13-17 Page 404
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TASK 29-13-17-400-041
Installation of the Engine-Pump Pressure Switch (3074GD)
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
WARNING : DO NOT TOUCH THE HYDRAULIC SYSTEM COMPONENTS FOR A SHORT TIME AFTER
_______ THE ENGINE IS SHUTDOWN. THE ENGINE COMPONENTS STAY HOT FOR SOME TIME AND CAN CAUSE INJURY.
CAUTION : DO NOT LET HYDRAULIC FLUID FALL ON THE ENGINE. UNWANTED HYDRAULIC
_______ FLUID MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT FREE CLOTH. THE FLUID CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND TO SOME PARTS.
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
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REFERENCE QTY DESIGNATION
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No specific clean cloth
No specific warning notice(s)
No specific access platform 1.5 m (4 ft. 11 in.)
No specific container 5 l (1.3208 USgal)
R No specific Torque Wrench : range 0.00 to 1.20 m.daN
R (0.00 to 9.00 lbf.ft) No specific Torque Wrench : range 1.00 to 10.00 m.daN
(8.00 to 75.00 lbf.ft)
B. Consumable Materials
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
Material No. 01-002 USA MIL-PRF-5624 GRADE JP4
FUEL, TURBO (Ref. 20-31-00)
C. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
12-12-29-611-001 Fill the Hydraulic Fluid Reservoir with a Hand Pump 29-13-00-710-002 Operational Test of the Yellow Hydraulic System 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 29-24-00-864-001 Depressurize the Yellow Hydraulic System
R 71-13-00-410-040 Closing of the Fan Cowl Doors 29-13-17-991-902 Fig. 401
3. Job Set-up
__________
Subtask 29-13-17-860-055
A. Aircraft Maintenance Configuration
(1)
Make sure that the Yellow hydraulic system is depressurized (Ref. TASK 29-24-00-864-001).
(2)
Make sure that the Yellow hydraulic reservoir is depressurized (Ref. TASK 29-14-00-614-001).
(3)
Make sure that the warning notice(s) is (are) in position to tell persons not to pressurize the Yellow hydraulic system: - on the ground service panel 198CB.
(4)
Make sure that the warning notice(s) is (are) in position on the access door 195BB to tell persons not to pressurize the Yellow hydraulic reservoir.
(5)
Make sure that an access platform is (are) in position at the engine.
(6)
Make sure that the fan-cowl door 447AL is open.
Subtask 29-13-17-941-054
B. Safety Precautions
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