Installation of the Transfer Gearbox Module [CFMB]

A. Preparation for Installation:
   (1) Install the TGB on the 856A2719 FIXTURE,SUPPORT-TGB R/I (856A2719G02) as follows:
     (a) Adjust the 2 front plates of the tool to engage the 2 lockpins in the forward flange holes at 4:30 and 7:30 o'clock positions. Tighten the 2 knurled knobs.
     (b) Attach the support, with the lockpin, to the rear mount flange of the TGB.
   (2) Install the radial drive shaft (440) in the fan frame and IGB as follows:
     (a) Remove the radial drive shaft (440) from storage tube assy (460).
     (b) Installation of new O-ring.
       1 Lightly coat a new AIPC 72-62-00-05-020 O-RING (450) with engine oil (Material No.CP2442) and install it in the groove of the shaft (440).
     (c) Coat the shaft splines.
       1 Lightly coat the shaft splines (both ends) and the roller bearing to prevent the fall of the rollers with vaseline (Material No.CP5070) .
     (d) Install 856A2727 PULLER RADIAL DRIVE SHAFT (856A2727G01) in the lower end of the shaft.
     (e) Slide shaft in the fan frame into strut and IGB, engaging splines of shaft in splines of IGB.
     (f) Ensure shaft remains in place. Remove puller.
   (3) Inspect gaskets (90), (240) and (410) before installation to make sure that they are serviceable. If necessary, replace gaskets.

B. Installation of the TGB on fan frame:
   (1) If necessary, remove the handcranking cover (Ref. AMM TASK 72-63-00-000-002) and disengage the horizontal drive shaft (Ref. AMM TASK 72-63-00-860-001).
   (2) Remove covers, plugs and cap from the TGB housing.
   (3) Remove cover from AGB horizontal drive shaft housing.
   (4) Lightly coat the horizontal drive shaft splines and the gasket (410) to be installed between AGB and TGB, with engine oil (Material No.CP2442) .
   (5) Lubricate a new AIPC 72-62-00-05-060 SEAL RING (295) with engine oil (Material No.CP2442) and install into the seal groove on the TGB adapter.
   (6) Lubricate a new AIPC 72-63-00-04-010 O-RING (420) with engine oil (Material No.CP2442) . Install the O-ring (420) on the horizontal drive shaft.
   (7) Install the AIPC 72-62-00-05-030 O-RING (430) in the groove on the oil distributor in the bevel gear:
     (a) Engage the AIPC 72-62-00-05-030 O-RING (430) by the hole of the oil distributor in the bevel gear with PLIERS - NOSE, SOFT, LONG.
     (b) Put the AIPC 72-62-00-05-030 O-RING (430) in the groove of the oil distributor in the bevel gear with PLIERS - NOSE, SOFT, LONG.

NOTE: Make sure that O-ring (430) is correctly installed in the groove of the oil distributor in the bevel gear.

   (8) Raise and position TGB at desired level under fan frame using hydraulic hoist platform and taking care not to interfere with adjacent accessories or tubes. Adjust jack details of fixture to complete positioning.
   (9) Insert the gasket (410) and hold it in place between TGB and AGB mating flanges.
   (10) Lightly coat threads of 3 bolts (160) with graphite grease (Material No.CP2101) and install at 2:30, 6:30, and 10:30 o'clock positions (flanged bushings positions) with washers (140) and nuts (130) to secure AGB and TGB handtight.
   (11) Install TGB mounting pin (400) as follows:
     (a) Lightly coat threads of pin with graphite grease (Material No.CP2101) and install 856A2537 PROTECTOR-MOUNTING PIN (856A2537G01) on to threaded end of pin.
     (b) Position TGB mount link, located on fan frame, in TGB clevis mount, align holes and engage pin (400).
     (c) Remove protector, install washer (390) and nut (380).
     (d) TORQUE to between 460 and 420 lbf.in (5.20 and 4.75 m.daN ) .
     (e) Safety nut with a new AIPC 72-00-00-07-070 COTTER PIN (370).
   (12) Loosen the 2 lockpins of 856A2719 FIXTURE,SUPPORT-TGB R/I (856A2719G02) from the 4:30 and 7:30 o'clock position holes in the TGB forward flange. Loosen handknobs to lower the 2 front plates of the tool.
   (13) Lightly coat threads of 2 bolts (350) with graphite grease (Material No.CP2101) and install at 4:30 and 7:30 o'clock positions with washers (340) and nuts (330) handtight.
   (14) Install TGB brackets as follows:
     (a) Loosen bolts (160), nuts (130) and washers (140) from 2:30 and 6:30 locations.
     (b) Lightly coat threads of a bolt (190) with graphite grease (Material No.CP2101) . Secure lower bracket (150) at the bottom and to the front face of TGB/AGB interface with bolts (160) and (190), washers (140) and (200), and nuts (130) and (210). Tighten by hand.
     (c) Lightly coat threads of 2 bolts (190) with graphite grease (Material No.CP2101) . Secure the support bracket at the left side and onto the rear face of TGB/AGB interface with bolts (190), washers (200) and nuts (210).
     (d) Lightly coat threads of bolt (300) with graphite grease (Material No.CP2101) . Secure forward bracket (260) on the TGB RH upper corner. TORQUE to between 110 and 100 lbf.in (1.24 and 1.13 m.daN )
     (e) Lightly coat threads of 2 bolts (190) with graphite grease (Material No.CP2101) . Attach brackets (250) and (260) on the RH side of the TGB/AGB interface with bolts (190) and (160), washers (200), and nuts (130) and (210).
   (15) Install the 3 remaining bolts (190), washers (200) and nuts (210).
   (16) TORQUE all bolts of TGB/AGB interface to between 280 and 250 lbf.in (3.16 and 2.83 m.daN )

C. Removal of support equipment.
   (1) Removal of the 856A2719 FIXTURE,SUPPORT-TGB R/I (856A2719G02)
     (a) Remove the pin which attaches the fixture to the TGB rear mount.
     (b) Lower the fixture with the hydraulic hoist platform, and remove it.
   (2) Removal of the 856A2805 TURNBUCKLE-TGB R/I (856A2805G01)
     (a) Loosen the coupling screw.
     (b) Remove the screws and washers which attach the baseplate of the tool to the rear face of the AGB.
     (c) Remove the pins which attach the turnbuckle yoke to the flange F of the fan case and remove the turnbuckle.
     (d) Reinstall bolts and nuts removed from the flange F, bolt heads forward. TORQUE nuts to between 110 and 98 lbf.in (1.24 and 1.11 m.daN ) .

D. Installation of the transfer gearbox module.
   (1) Installation of the handcranking drive assembly:
     (a) Push the handcranking drive shaft and install the handcranking drive (Ref. AMM TASK 72-63-00-860-001).
     (b) Install the handcranking drive cover (Ref. AMM TASK 72-63-00-400-002).
   (2) Installation of TGB external parts
     (a) Installation of brackets
       1 Lightly coat the 2 bolts (360) with graphite grease (Material No.CP2101) and secure bracket (60) on the rear face of TGB housing (120). TORQUE the bolts to between 110 and 100 lbf.in (1.24 and 1.13 m.daN ) .
       2 Lightly coat 2 bolts (290) with graphite grease (Material No.CP2101) . Position the bleed bias bracket (280) on the RH rear bracket (270). Attach the brackets to the TGB housing (120) with bolts (290). TORQUE the bolts to between 110 and 100 lbf.in (1.24 and 1.13 m.daN ) .
       3 Lightly coat a bolt (70) with graphite grease (Material No.CP2101) and secure lower bracket (80) handtight on the LH side of TGB housing.
       4 Lightly coat 2 bolts (40) and (50) with graphite grease (Material No.CP2101) . Secure upper bracket (30) on the rear face of TGB housing. Secure brackets together on the LH side of TGB housing.
       5 TORQUE the 3 bolts (40), (50) and (70) to between 110 and 100 lbf.in (1.24 and 1.13 m.daN ) .
     (b) Installation of tubes on TGB housing (120).

CAUTION: USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:

• ONE WRENCH TO HOLD THE UNION, AND
• ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.

THIS PREVENTS DAMAGE TO THE PARTS.

       1 Connect TGB oil supply tube (180) as follows:
         a Lightly coat threads of nipple with engine oil (Material No.CP2442) .
         b Connect oil supply tube to nipple with union nut (100). Make sure tube is unstrained. TORQUE nut to between 300 and 270 lbf.in (3.39 and 3.05 m.daN ) .
       2 Connect oil tank vent tube (220) assy as follows:
         a Lightly coat gasket (240) with engine oil (Material No.CP2442) .
         b Lightly coat threads of the 4 bolts (230) with graphite grease (Material No.CP2101) .
         c Install gasket (240) and attach the oil vent tube (220) flange on TGB housing using the 4 bolts (230). TORQUE to between 50 and 45 lbf.in (0.57 and 0.51 m.daN ) .
       3 Connect the TGB scavenge tube (170) as follows:
         a Lightly coat gasket (90) with engine oil (Material No.CP2442) .
         b Lightly coat threads of the 4 bolts (110) with graphite grease (Material No.CP2101) .
         c Install gasket (90) and secure the scavenge tube (170) flange on TGB housing (120) using the 4 bolts (110). TORQUE to between 50 and 45 lbf.in (0.57 and 0.51 m.daN ) .
       4 Check for oil scavenge plug lockwire. Proceed as follows if lockwire is not present.
         a Loosen scavenge plug from TGB housing.
         b Remove O-ring (10) and discard.
         c Lightly coat new O-ring (10) and threads of scavenge plug (20) with engine oil (Material No.CP2442) . Install new AIPC 72-62-00-05-040 O-RING (10) on scavenge plug (20).
         d Tighten scavenge plug (20) on TGB housing. TORQUE to between 130 and 110 lbf.in (1.47 and 1.24 m.daN ) . Safety with a CP8001lockwire 0.032 in. (0.8 mm) dia. and CP8002lockwire 0.032 in. (0.8 mm) dia.
   (3) Installation of the Pneumatic Starter:
     (a) Reinstall the pneumatic starter (Ref. AMM TASK 80-11-10-400-002).