1EFF : ALL 1 34-42-45Page 401 1 1 Feb 01/98 1 1 1CES 1 Subtask 34-42-45-865-050

 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 3SA1
 121VU COM NAV/RAD ALTM/1 1SA1 K11 FOR 3SA2
 121VU COM NAV/RAD ALTM/2 1SA2 K12
 Subtask 34-42-45-010-050
 C. Get Access
 (1)
 Open the AFT Cargo Door 826 (Ref. TASK 52-30-00-860-001).

 (2)
 Put the access platform at the aft cargo door 826.

 (3)
 Remove the access panel 152HW.

 4. Procedure
_________
 (Ref. Fig. 401/TASK 34-42-45-991-001) Subtask 34-42-45-020-052
 A. Removal of the Radio Altimeter Transceiver Fan NOTE : The procedure is the same for the radio altimeter-transceiver fans
____
 3SA1 and 3SA2.

 (1)
 Disconnect the electrical connector (8).

 (2)
 Remove the screws (2), the washers (3) and remove the fan assembly (1).

 (3)
 Remove the nuts (6), the washers (5), the bolts (4), and remove the cover (7).

 (4)
 Disconnect the electrical connections (13).

 (5)
 Put blanking caps on the disconnected electrical connectors.

 (6)
 Remove the nuts (11), the washers (10) and the bolts (9).

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 Radio Altimeter-Transceiver Fan.
 Figure 401/TASK 34-42-45-991-001
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1  1  Feb 01/98
 1  1
 1CES  1

 (7) Remove the blower (12).

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 Installation of the Radio Altimeter-Transceiver Fan 3SA1 (3SA2)
 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 2 m (6 ft. 7 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
R 34-42-00-750-001 Detailed Inspection and Operational Check of the
R Radio Altimeter Fan 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump 52-30-00-860-002 Close the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump
 3. Job Set-up
__________
 Subtask 34-42-45-860-050
 A. Aircraft Maintenance Configuration
 (1)
 Make sure that the ground service network is energized (Ref. TASK 24-42-00-861-001)

 (2)
 Make sure that the Aft cargo-compartment door (Ref. TASK 52-30-00-860-001) is open.

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 (3)
 Make sure that the access panel 152HW is removed.

 (4)
 Make sure that the access platform is in position at the Aft cargo door 826.

 Subtask 34-42-45-865-051
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 3SA1
 121VU COM NAV/RAD ALTM/1 1SA1 K11 FOR 3SA2 121VU COM NAV/RAD ALTM/2 1SA2 K12
 4. Procedure
_________ Subtask 34-42-45-420-050
 A. Installation of the Radio Altimeter Transceiver Fan
 (1)
 Clean the component interface and/or the adjacent area.

 (2)
 Do an inspection of the component interface and/or the adjacent area.

 (3)
 Remove the blanking caps from the electrical connectors.

 (4)
 Make sure that the electrical connectors are clean and in the correct condition.
　
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