TASK 49-61-03-404-011
 3.  Exhaust Gas Temperature Thermocouple Installation (Fig. 401)_________________________________________________
 A. Consumable Materials
 (1)  Tape - Velcro Steel, Woven Fastener, Hook and Wide Loop (One Inch Wide) - commercially available
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SEE B
FWD 
SEE  A 
APU COMPARTMENT 
FWD 
A (VIEW IN THE UP DIRECTION) 
EGT THERMOCOUPLE (6 LOCATIONS)  SEE  C 
FORWARD AND AFT SEALING COVER (THERMOCOUPLE) (4 LOCATIONS) 

FORWARD AND AFT SEALING COVER (SCAVENGE TUBE)  FORWARD AND AFT SEALING COVER (BREATHER TUBE) 
B 

Exhaust Gas Temperature Thermocouple Installation
Figure 401 (Sheet 1)

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1. BOLT (2 LOCATIONS)

1A. WASHER (2 LOCATIONS)
1B. INSULATOR BRACKET (2 LOCATIONS)
NEGATIVE (KN)
BUS BAR
CHROMEL (KP)
TERMINAL LUG
2. NUT (2 LOCATIONS)
Exhaust Gas Temperature Thermocouple Installation
Figure 401 (Sheet 2)

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 B. Parts ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 4 | Immersion Thermocouple (Exhaust | 49-61-03 | 01 | 75 | | | | Gas Temperature Thermocouple) | | | | 2.......….......…...................................…...........…......….......1
 C. Access
 (1)  
Location Zones
 221 Control Cabin - Left
 222 Control Cabin - Right
 310 Fuselage - Station 2360 to Station 2792

 (2)  
Access Panels
 317AL APU Access Door - Left
 318AR APU Access Door - Right

 D.
Procedure

 S 424-033
 CAUTION: REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY.
_______ IF YOU DO NOT REMOVE THE PROTECTION COVERS, DAMAGE TO THE APU CAN OCCUR.
 (1)  
Do these steps to install the EGT thermocouple (4):

 (a)  
Install the EGT thermocouple (4) in the turbine exhaust housing with the two bolts (3). 1) Tighten the two bolts (3) to 36-40 inch-pounds (4.1-4.5

 newton-meters).

 (b)  
Install the aft sealing cover (6) and then the forward sealing cover (5) on the turbine exhaust housing.

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 (c)  
Attach the forward and aft sealing covers (5), (6) with velcro steel tape.

 (d)  
Install the alumel (KN) terminal lug to the negative (KN) bus bar with the bolt (1), washer (1A), insulator bracket (1B) and nut (2).

 NOTE: The hole on the alumel (KN) terminal lug is larger
____ than the hole on the chromel (KP) terminal lug.
　
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