R **ON A/C 051-051,
R R Pre SB CFMI 72-0368 R Pre SB CFMI 72-0176 R
R NOTE : This descripton is for Turbine Frame with Tangential Non
____ R Symetrical Section Struts only.
R A. Turbine Frame with Tangential Non Symetrical Section Struts
R (Ref. Fig. 002A)
R The turbine frame assembly is made of nickel alloy and consists of a hub
R and a polygonal outer casing connected with tangential struts.
R (Ref. Fig. 001A)

R (1) There are 16 struts, airfoil-shaped and tangential to the hub. The
R struts provide internal passage for the following items :
R (Ref. Fig. 003A)

R (a) Aft sump oil scavenge tube (No. 7 strut)

R (b) Oil supply tube for the No. 4 and No. 5 bearings (No. 10 strut).

R (2) The aft sump overboard seal drain tube is routed between struts No. 7
R and No. 8.

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 E E201-207, May 01/05 E E ECES E F 『 E C F M E E E E 56-5B E F 『 E C F M E E E

R  Turbine Frame Section 
R  Figure 003A
 F R EEFF :  051-051,  『 E 72-56-00 Page 11 
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 E 56-5B E

 Turbine Frame Section
 Figure 003B

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 E 56-5B E

 Oil Pressurizing Seals-Location
 Figure 004

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 E  E
 E  56-5B  E
 E  E 

R  (3) The front flange of the outer casing is bolted to the LPT case. The 
R  outer casing rear flange supports the primary exhaust nozzle. At its 
R  periphery, there are 3 clevis mounts for engine/airframe adaptation, 
R  and 2 brackets for handling and installation on engine storage stand. 
R  (Ref. Fig. 003A) 
R  (4) On its front side, the hub of turbine frame has 3 attachment flanges 
R  that are, from the center and outward: 
R  - the hub inner front flange. This flange supports the No.5 bearing 
R  support. 
R  - the hub mid front flange. This flange supports the oil collector 
R  (or aft oil sump assembly). 
R  - the hub outer front flange. This flange supports the seal cover. 
R  The seal cover also provides forward retention of the inner flow 
R  path tiles. 
R  (5) On its rear side, the turbine frame has the following attachment 
R  items that are, from the center and outwards: 
R  - a flange located on the hub of turbine frame. This flange provides 
R  the support and attachment for the sheet metal flange assembly. 
R  This sheet metal flange assembly itself supports and centers the 
R  flame arrestor and also provides a rear support and centering for 
R  the oil inlet cover. 
R  - a circle of studs (quantity: 16). There is a stud projecting 
R  rearward at the root section of each tangential strut. The studs 
R  provide support and attachment for the engine exhaust plug 
R  (centerbody) with nuts. 
R  (6) The inner wall of the turbine frame gaspath is lined with stainless 
R  steel protective tiles. These tiles are located between the 
R  tangential struts. They have two stiffeners on their inner side to 
R  better withstand vibrations. 
R 
R  Pre SB CFMI 72-0176 
R  Pre SB CFMI 72-0368 
R 
R  B. No. 5 Bearing Support for Turbine Frame with Tangential Non Symetrical 
R  Section Struts 
R  (Ref. Fig. 004A) 
R  The No. 5 bearing support is made of steel alloy. Its attachment flange 
R  is bolted to the hub inner front flange of the turbine frame. The inner 
R  front bore of the No. 5 bearing support accommodates the No. 5 bearing 
R  outer race and an adjusting sleeve.

 E E May 01/05 E E ECES E F 『 E C F M E E E E 56-5B E

R  Oil Pressurizing Seals-Location 
R  Figure 004A
 F EEFF :  051-051,  『E 72-56-00 Page 15 
E  E  May 01/05
 E  E
　
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