__________ Subtask 72-56-00-010-065
A. Get Access
(1) Remove the core nozzle (Ref. TASK 78-11-11-000-041).
(2) Remove the center body (Ref. TASK 78-11-12-000-041).
4. Procedure
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(Ref. Fig. 801/TASK 72-56-00-991-310) Subtask 72-56-00-869-054
A. Preparation for Replacement
(1) Clear away the stud to repair by removing the attachment bolts on the rear flange of the two adjacent thermal insulation blankets and lifting them.
After SB 72-247
(2) Clear away the stud to repair by removing the attachment bolts and washers on the rear flange of the two adjacent thermal insulation blankets and lifting them.
END of SB 72-247
Subtask 72-56-00-350-052
B. Replace defective studs
(1) Remove the tack weld which safeties the defective stud to the frame. To do this, use a small, narrow grinding wheel.
NOTE : Be careful not to cut into the metal of the frame when you do
____
the grinding.
(2) Loosen and remove the stud. Discard it.
(3) Complete the removal of the remaining tack weld material. To do this, use a small, manual grind tool.
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Replacement of the Defective Studs on the Turbine Frame
Figure 801/TASK 72-56-00-991-310
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(4) Blow the areas adjacent to the hole for the stud with shop air.
(5) Apply a thin layer of graphite grease (Material No. CP2101) on the stud threads which go in the hole of the frame.
(6) Tighten the new stud by hand on the turbine frame. Then use a torque wrench to complete the installation. TORQUE the stud to between 243.8 and 269.5 lbf.in (2.75 and 3.04 m.daN).
(7) Loose the stud and TORQUE it a second time to between 243.8 and 269.5 lbf.in (2.75 and 3.04 m.daN).
R NOTE : You must do the tack welding of the new stud in shop, at the
____ R next maintenance opportunity.
(8) Apply a thin layer of graphite grease (Material No. CP2101) on the
bolts which secure the thermal insulation blankets. R R PRE CFM SB 72-247 R
(9) Re-install the two adjacent thermal insulation blankets with attachment bolts on the rear flange.
R END of PRE CFM SB 72-247
R POST CFM SB 72-247 R
(10) Re-install the two adjacent thermal insulation blankets with washers and attachment bolts on the rear flange.
R END of CFM SB 72-247
(11) TORQUE the bolts to between 100 and 110 lbf.in (1.13 and 1.24 m.daN).
5. Close-up
________
Subtask 72-56-00-410-065
A. Close Access
(1) Install the center body (Ref. TASK 78-11-12-400-041).
(2) Install the core nozzle (Ref. TASK 78-11-11-400-041).
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Replacement of Defective or Missing Thermal Insulation Blankets (On Radial Struts TRF Only)
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific Torque Wrench : range 36.00 to 220.00 lbf.in
(0.40 to 2.60 m.daN)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP2101 USA MIL-T-5544 graphite grease (Ref. 70-30-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
78-11-11-000-041 Removal of the Core Nozzle Assembly 78-11-11-400-041 Installation of the Core Nozzle Assembly 78-11-12-000-041 Removal of the Centerbody 78-11-12-400-041 Installation of the Centerbody 72-56-00-991-310 Fig. 801
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