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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
2. BOLT (4 LOCATIONS)  L-A9896 (0000) 
10. ADJUSTER  4. BOLT 7. NUT 
SUPPORT BRACKET UPPER  SEE  B 
SEE  A  BRACKET SUPPORT LOWER  B A  A B  5. BOLT 9. NUT 8. BUSHING 
TCC (LPT) COLLECTOR AIR SHUTOFF VALVE 1. HPT TCC  CONTROL CABLE 3. BOLT (4 LOCATIONS) (4 LOCATIONS) 14. NUT 
2. BOLT 10. ADJUSTER 5. BOLT 9. NUT 8. BUSHING ENGINES WITH PHASE 3 A TCC (HPT) COLLECTOR (4 LOCATIONS) 
4. BOLT 7. NUT 
LPT TCC SHUTOFF VALVE  B  B  CABLE CONTROL 
A  A  SEE  B 
AIR SHUTOFF VALVE 1. HPT TCC  3. BOLT 14. NUT (4 LOCATIONS) (4 LOCATIONS) 
ENGINES WITHOUT PHASE 3 
A 
Figure 401 (Sheet 1) HPT TCC Air Shutoff Valve Installation 

F01168
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LPT TCC AIR

LINK
B-B
HPT TCC Air Shutoff Valve Installation
Figure 401 (Sheet 2)

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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
5. BOLT
9. NUT
CONTROL CABLE
8. BUSHING

L-A0741 0286
16. IDLER ARM  16. IDLER ARM
9. NUT
8. BUSHING
ENGINES WITH PHASE 3 AND ENGINES WITHOUT PHASE 3 AND WITH PW SB 75-136 WITH PW SB 75-136

B 
B
L-B7115 (1298)
1
IF INSTALLLED  PW V
HPT TCC Air Shutoff Valve Installation
Figure 401 (Sheet 3)

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S 034-016-N00
 (2)  Remove the shutoff valve (10):
 (a)  Remove the bolt (4) and the nut (7) that holds the end rod of the control cable.
 NOTE: The control cable is attached to the idler arm of the
____
 valve assembly.

 (b)  Remove the bolts (2 and 15) that hold the top flange of the shutoff valve (1) and the upper support link.
 NOTE: They are attached to the upper support bracket.
____
 1)  Turn the support link in the direction of the engine case.
 (c)  
Remove the bolts (3) and the nuts (14) that hold the lower valve flange to the lower support bracket.

 (d)  
Pull the shutoff valve (1) aft and out from between the upper and the lower support brackets.

 (e)  
If you will replace the shutoff valve (1), remove the adjuster assembly and the idler arm assembly: 1) Remove the bolt (5) and the nut (9) that hold the rod end

 of the adjuster assembly (10).
 NOTE: It is attached to the idler arm of the valve
____
 assembly.

 a)  Remove the adjuster assembly (10) and the bushing (8).
 NOTE: The bolt and nut that connects the rod end to
____ the LPT valve lever are removed with the LPT valve (AMM 75-24-04/401).
 2)  ENGINES PRE-PW-SB 75-136; Remove the nut (11) that holds the idler arm assembly (12) to the shutoff valve (1).
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