CENTER EPR (PT4.95) MANIFOLD
EPR MANIFOLD TEE
EGT (TT4.95) THERMOCOUPLE CABLE SUPPORT BRACKET
TURBINE EXHAUST CASE
RIGHT EPR (PT4.95)
(VIEW LOOKING UP)
MANIFOLD
A-A
Engine Pressure Ratio (PT4.95) Manifold Installation
Figure 401 (Sheet 2)

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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
LEFT EPR 
(PT4.95) 
LEFT EGT (TT4.95)  MANIFOLD 
THERMOCOUPLE 
BOLT  CABLE HALF  NUT 

NUT 
FLANGE T 
CLAMP  BRACKET 
CLAMP 
LEFT EGT (TT4.95) 
THERMOCOUPLE 
E  LEFT  CABLE HALF 
EPR (PT4.95) 
MANIFOLD 
CLAMP  CLAMP 
BOLT 
(4 PLACES) 
F 
BOLT 
PLATE 
FLANGE 
T  RIGHT 
EGT (TT4.95)  PLATE 
THERMOCOUPLE 
CABLE HALF 
(REF) 
RIGHT EPR  RIGHT EGT  RIGHT EPR 
(PT4.95) MANIFOLD  CLAMP  NUT  (TT4.95) THERMOCOUPLE  MANIFOLD (PT4.95) 
CABLE HALF 
BRACKET  (REF) 
FWD 
G 
FLANGE T 
BOLT 
FWD  BRACKET  NUT 
CLAMP 
H 

Engine Pressure Ratio (PT4.95) Manifold Installation
Figure 401 (Sheet 3)

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(3)  S 034-004-N00Disconnect the EEC tube nut (installed aft of flange P at the 7 o'clock position) from the center manifold.
 (4)  S 034-023-N00Disconnect the left manifold tube nut (installed at the 7:30 o'clock position) from the center manifold.
 (5)  S 034-024-N00Disconnect the right manifold tube nut (installed at the 5:30 o'clock position) from the center manifold.
 (6)  S 034-005-N00Remove the bolt and the nut (installed at the 10 o'clock position) that connects the EGT cable clamp to the left manifold clamp.
 (7)  S 034-006-N00Remove the bolts and the nuts that attach the manifold clamps to flange T brackets (9 locations; Views A-A, F, G, and H).
 (8)  S 034-025-N00Remove the bolt and the nut (installed at the 10 o'clock position) that attaches the EGT cable clamp to the bracket on the manifold (View C).
 (9)  S 034-026-N00Remove the bolt and the nut (installed at the 4 o'clock position) that attaches the EGT cable clamp to the manifold.
 S 024-027-N00

 (10) To remove the left manifold, do the steps that follow:
 (a)  Turn the left manifold clockwise (as viewed from rear) until the manifold tube end is clear of the EGT probe, cable, and bracket (approximately 5 inches).
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(b)  
Turn the manifold counterclockwise (as viewed from rear) to put the manifold tube end above the EGT probe and bracket locations and below the cable support bracket (installed at the 9:30 o'clock position).

 (c)  
Remove the left manifold.

 (d)  
Install caps on the manifold tube ends.

 S 024-028-N00
 (11) To remove the center manifold, do the steps that follow:
 (a)  
Turn the center manifold clockwise (as viewed from rear) until the manifold is clear of the cable support bracket.
　
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