Installation of the Forward Cargo-Compartment Temperature-Selector

TASK 21-43-16-400-801-A
Installation of the Forward Cargo-Compartment Temperature-Selector

ZONE: 210

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

B. Referenced Information

REFERENCE	DESIGNATION
TASK 21-43-00-710-002-A	Operational Test of the FWD Cargo Compartment Heating System
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
Forward Cargo-Compartment Temperature-Selector

3. Job Set-up
Subtask 21-43-16-862-051-A ** ON A/C NOT FOR ALL

A. Make sure that the aircraft electrical circuits are de-energized
(Ref. AMM TASK 24-41-00-862-002).

4. Procedure

NOTE: Two persons are necessary for this procedure. One person must hold panel 22VU while the other connects the electrical connector.

Subtask 21-43-16-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Forward Cargo-Compartment Temperature-Selector
(1) Do an inspection of the component interfaces and the adjacent area.
(2) Clean the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Install the temperature selector (4). Put the locating stud (5) at the top, opposite to the black mark (6).
(5) Make sure that the locating stud (5) is in position in the hole on the shaft below the black mark (6).
(6) Install the washer (7) and the nut (8).
(7) Tighten the nut (8).
(8) Align the knob (9) with the flat surface of the shaft. Push the knob (9) until it is fully engaged.
(9) Tighten the two screws (10).
(10) Remove the CAP-BLANKING from each electrical connector and receptacle.
(11) Make sure that all the electrical connections are clean and in the correct condition.
(12) Connect the electrical connector (3) to the temperature selector (4).
(13) Put panel 22VU (1) in position on its housing.
(14) Tighten the quarter-turn fasteners (2).

Subtask 21-43-16-861-052-A ** ON A/C NOT FOR ALL

B. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 21-43-16-710-050-A ** ON A/C NOT FOR ALL

C. Do an operational test of the forward cargo-compartment heating-system (Ref. AMM TASK 21-43-00-710-002).

5. Close-up
Subtask 21-43-16-942-050-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.

Subtask 21-43-16-862-050-A ** ON A/C NOT FOR ALL

B. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.02 06:11:20 UTC