Installation of the Overheat Sensing Elements

TASK 36-22-16-400-001-A
Installation of the Overheat Sensing Elements

WARNING: MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 190
ZONE: 500
ZONE: 600
FIN: 29HF
FIN: 45HF
FIN: 56HF
FIN: 72HF
FIN: 80HF
FIN: 81HF
FIN: 82HF
FIN: 83HF

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	SAFETY BARRIER(S)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.68 and 0.56 m.daN (60.18 and 49.56 lbf.in )
98D27803000000	1	LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
190	BELLY FAIR, AIR CONDITIONING & HYD COMPT
500	LEFT WING
600	RIGHT WING
FOR [29HF] (SNSG ELEM-OVHT, L WING LOOP A)
191BB, 191BT, 191CT, 191EB, 521AB, 521BB, 521CB
FOR [45HF] (SNSG ELEM-OVHT, R WING LOOP A)
191BB, 192BT, 192CT, 192EB, 621AB, 621BB, 621CB
FOR [56HF] (SNSG ELEM-OVHT, L WING LOOP B)
191BB, 191CT, 191EB, 521AB, 521BB, 521CB
FOR [72HF] (SNSG ELEM-OVHT, R WING LOOP B)
191BB, 192CT, 192EB, 621AB, 621BB, 621CB
FOR [80HF] (SNSG ELEM-OVHT, R WING LOOP A)
192CT, 192EB, 621AB, 621BB, 621CB
FOR [81HF] (SNSG ELEM-OVHT, L WING LOOP A)
191CT, 191EB, 521AB, 521BB, 521CB
FOR [82HF] (SNSG ELEM-OVHT, R WING LOOP B)
192BT, 192CT, 192EB, 621AB, 621BB, 621CB
FOR [83HF] (SNSG ELEM-OVHT, L WING LOOP B)
191BT, 191CT, 191EB, 521AB, 521BB, 521CB

D. Referenced Information

REFERENCE	DESIGNATION
TASK 27-80-00-866-004-A	Extending the Slats on the Ground
TASK 27-80-00-866-005-A	Retracting the Slats on the Ground
TASK 36-22-00-710-001-A	Operational Test of the Overheat Detection System
TASK 36-22-00-710-802-A	Operational Test of the Overheat Detection System
TASK 36-22-16-400-002-A	Installation of the Cables
TASK 53-35-11-000-001-A	Removal of the Wing-to-Fuselage Fairings
TASK 53-35-11-400-001-A	Installation of the Wing-to-Fuselage Fairings
TASK 53-35-13-000-002-A	Removal of the Quick-Release Access Panels from the Belly Fairing Structure
TASK 53-35-13-400-002-A	Installation of the Quick-Release Access Panels on the Belly Fairing Structure
TASK 57-41-37-000-004-A	Removal of the Pressure Relief Panels
TASK 57-41-37-000-005-A	Removal of the NACA Duct Panel
TASK 57-41-37-400-002-A	Installation of the Pressure Relief Panels
TASK 57-41-37-400-005-A	Installation of the NACA Duct Panel
Overheat Sensing Elements and Cables - Access Panels ** ON A/C NOT FOR ALL
Overheat Sensing Elements
Overheat Sensing Elements
Overheat Sensing Elements
Overheat Sensing Elements - Typical Assemblies
Overheat Sensing Elements and Cables - Access Panels ** ON A/C NOT FOR ALL
Permitted Tolerances of the Sensing Elements
Sensing Elements - Typical Installation

3. Job Set-up
Subtask 36-22-16-941-057-A

A. Safety Precautions
(1) Make sure that the SAFETY BARRIER(S) are in position.
(2) Make sure that the WARNING NOTICE(S) is in the cockpit to tell persons not to operate the slat controls.

Subtask 36-22-16-860-065-A

B. Aircraft Maintenance Configuration
(1) Make sure that the slats are fully extended (Ref. AMM TASK 27-80-00-866-004).
(2) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is on the flap/slat control lever on panel 114VU.
(3) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position below the applicable access panels.
(4) Make sure that the applicable access panels are removed, (Ref. AMM TASK 53-35-13-000-002), (Ref. AMM TASK 53-35-11-000-001), (Ref. AMM TASK 57-41-37-000-004), (Ref. AMM TASK 57-41-37-000-005):
(a) FOR [56HF] (SNSG ELEM-OVHT, L WING LOOP B)

Panels 191BB, 191EB 191CT 521AB 521BB 521CB.

(b) FOR [81HF] (SNSG ELEM-OVHT, L WING LOOP A)

Panels 191EB 191CT 521AB 521BB 521CB.

Panels 191BB, 192EB 192CT 621AB 621BB 621CB.

(d) FOR [80HF] (SNSG ELEM-OVHT, R WING LOOP A)

Panels 192EB 192CT 621AB 621BB 621CB.

(e) FOR [29HF] (SNSG ELEM-OVHT, L WING LOOP A)

Panels 191BB, 191EB 191CT 191BT 521AB 521BB 521CB.

(f) FOR [83HF] (SNSG ELEM-OVHT, L WING LOOP B)

Panels 191EB 191CT 191BT 521AB 521BB 521CB.

(g) FOR [45HF] (SNSG ELEM-OVHT, R WING LOOP A)

Panels 191BB, 192EB 192CT 192BT 621AB 621BB 621CB.

(h) FOR [82HF] (SNSG ELEM-OVHT, R WING LOOP B)

Panels 192EB 192CT 192BT 621AB 621BB 621CB.

Subtask 36-22-16-865-056-A

C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR BLEED/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B06
** ON A/C NOT FOR ALL
49VU	AIR BLEED/ENG 2/MONG	3HA2	D12
49VU	AIR BLEED/ENG 1/CTL	2HA1	D11
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B01
** ON A/C ALL
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21
** ON A/C NOT FOR ALL
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22
** ON A/C NOT FOR ALL
122VU	AIR BLEED/ENG 1/MONG	3HA1	Z23
122VU	AIR BLEED/ENG 2/CTL	2HA2	Z22

4. Procedure
Subtask 36-22-16-420-057-A

A. Preparation for Installation
(1) Clean the component interface and/or the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Do an inspection of 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) Examine the applicable sensing element (1), (2), (7) and (8) for the correct condition. The element tube must not be twisted and the surface must be free of damage other than the limits that follow:
(a) The maximum permitted depth of abrasions or dents is 0.05 mm (0.0020 in.).
(b) The minimum permitted tube diameter at a dent is 1.78 mm (0.0701 in.).
(5) Remove the blanking caps from the applicable connectors and examine the connectors for the correct condition. Put the blanking caps on the connectors again.

Subtask 36-22-16-420-050-A

CAUTION: REMOVE OR INSTALL THE SENSING ELEMENTS CAREFULLY. DO NOT TWIST, BEND OR CAUSE KINKS IN THE SENSING ELEMENTS. IF YOU DO, YOU CAN CAUSE DAMAGE TO THEM.

B. Installation of the Overheat Sensing Elements

NOTE: Obey the permitted tolerances for the installation of the sensing elements:

Permitted Tolerances of the Sensing Elements

Sensing Elements - Typical Installation

(1) Carefully install the applicable overheat sensing element (1), (2), (7) or (8). Do not remove the blanking caps.
(2) Install a protective sleeve (26) on the overheat sensing element (1), (2), (7) or (8) at each clamp (25).
(3) Close the clamps (25) sufficiently to hold the overheat sensing element (1), (2), (7) or (8) in position. The overheat sensing element must be free for you to make the connections.
(4) Install the overheat sensing element 29HF(45HF) (1) and 56HF(72HF) (8) as follows:
(a) Remove the blanking caps from the connectors (19) and (22).
(b) Install the connector (22) in the flanged attachment (21).
(c) Install the nut (20) on the connector (22).
(d) TORQUE the nut (20) to between 0.68 and 0.56 m.daN (60.18 and 49.56 lbf.in )

.
(e) Install the connector (19) on the connector (22).
(f) TORQUE the connector (19) to between 0.68 and 0.56 m.daN (60.18 and 49.56 lbf.in )

.
(5) Install the overheat sensing element 81HF(80HF) (7) and 83HF(82HF) (2):
(a) Remove the blanking caps from the connectors (19), (22), (23) and (24).
(b) Install the connectors (22) and (23) in the flanged attachment (21).
(c) Install the nut (20) on the connectors (22) and (23).
(d) TORQUE the nut (20) to between 0.68 and 0.56 m.daN (60.18 and 49.56 lbf.in )

.
(e) Install the connectors (19) and (24) on the connectors (22) and (23).
(f) TORQUE the connectors (19) and (24) to between 0.68 and 0.56 m.daN (60.18 and 49.56 lbf.in )

.
(6) Install the parts of the cables 21HF(37HF) (40) and 77HF(64HF) (44) (Ref. AMM TASK 36-22-16-400-002) (that you removed to help the removal of the overheat sensing elements 56HF(72HF) (8) and 81HF(80HF) (7)).

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(7) Safety the applicable connectors (19), (22), (23) and (24) and the nuts (20) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(8) Close all the clamps (25) to hold the applicable overheat sensing element (1), (2), (7) or (8). Lock the quick-release fasteners (27).

Subtask 36-22-16-865-057-A

C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR BLEED/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
** ON A/C NOT FOR ALL
49VU	AIR BLEED/ENG 2/MONG	3HA2	D12
49VU	AIR BLEED/ENG 1/CTL	2HA1	D11
** ON A/C NOT FOR ALL
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22
** ON A/C NOT FOR ALL
122VU	AIR BLEED/ENG 1/MONG	3HA1	Z23
122VU	AIR BLEED/ENG 2/CTL	2HA2	Z22

Subtask 36-22-16-710-050-A ** ON A/C NOT FOR ALL

D. Test
(1) Do an operational test of the overheat detection system (Ref. AMM TASK 36-22-00-710-001).

Subtask 36-22-16-710-050-B ** ON A/C NOT FOR ALL

D. Operational Test
(1) Do an operational test of the overheat detection system (Ref. AMM TASK 36-22-00-710-802).

5. Close-up
Subtask 36-22-16-410-050-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable access panels, (Ref. AMM TASK 53-35-13-400-002), (Ref. AMM TASK 53-35-11-400-001), (Ref. AMM TASK 57-41-37-400-002), (Ref. AMM TASK 57-41-37-400-005):
(a) FOR [56HF] (SNSG ELEM-OVHT, L WING LOOP B)

Install 191BB, 191EB 191CT 521AB 521BB 521CB.

(b) FOR [81HF] (SNSG ELEM-OVHT, L WING LOOP A)

Install 191EB 191CT 521AB 521BB 521CB.

Install 191BB, 192EB 192CT 621AB 621BB 621CB.

(d) FOR [80HF] (SNSG ELEM-OVHT, R WING LOOP A)

Install 192EB 192CT 621AB 621BB 621CB.

(e) FOR [29HF] (SNSG ELEM-OVHT, L WING LOOP A)

Install 191BB, 191EB 191CT 191BT 521AB 521BB 521CB.

(f) FOR [83HF] (SNSG ELEM-OVHT, L WING LOOP B)

Install 191EB 191CT 191BT 521AB 521BB 521CB.

(g) FOR [45HF] (SNSG ELEM-OVHT, R WING LOOP A)

Install 191BB, 192EB 192CT 192BT 621AB 621BB 621CB.

(h) FOR [82HF] (SNSG ELEM-OVHT, R WING LOOP B)

Install 192EB 192CT 192BT 621AB 621BB 621CB.

Subtask 36-22-16-865-058-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B06
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B01
** ON A/C ALL
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21

Subtask 36-22-16-860-064-A

C. Aircraft Configuration
(1) Retract the slats fully (Ref. AMM TASK 27-80-00-866-005).

Subtask 36-22-16-942-050-A

D. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 01:17:01 UTC