A320飞机维护手册 AMM ENGINE 发动机 2(124)_航空信息_民用航空_通用航空

(11) Remove the bolt (70) securing lower LH bracket (80) on the left side of the TGB housing (120).

(12) Remove the bolt (300) securing forward bracket (260) on the right side of the TGB housing (120).

Subtask 72-62-00-480-052
B. Installation of support equipment.
(1) Install TURNBUCKLE - TGB R/I (856A2805G01) as follows:
NOTE : To prevent AGB rotation during the TGB removal it is necessary
____
to install the TGB turnbuckle.

(a) Remove the pneumatic starter (Ref. TASK 80-11-10-000-002).

(b) Remove bolts and nuts from holes No. 46 and 47 on flange F to free brackets at this place.

(c) Install the TGB turnbuckle yoke on the flange F of the fan inlet case. Attach the yoke at holes No. 47 and 48, with the 2 lockpins supplied.

(d) Adjust the height of tool, using the coupling screw to obtain the exact position of the baseplate on the AGB rear flange.

(e) Attach the TGB turnbuckle to the AGB housing with screws and washers supplied.

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(f) Handtighten the coupling screw in order to lock the AGB relative to the fan frame.
(2) Install FIXTURE, SUPPORT - TGB R/I (856A2719G02) as follows:
(a) Install TGB removal/installation support on an hydraulic hoist platform.

(b) Position hydraulic hoist platform under TGB module.

(c) Remove the 2 bolts (350), nuts (330) and washers (340) securing TGB housing to the horizontal drive shaft housing at the 4:30 and

7:30 o'clock positions.

(d) Actuate hydraulic hoist platform and adjust rear yoke of TGB support with TGB rear mount until the lockpin can be inserted.

(e) Adjust the 2 front plates of tool and engage the 2 lockpins in the 4:30 and 7:30 o'clock position holes of the TGB forward flange.

(f) Remove the bolts. CAUTION : DO NOT REMOVE THE 3 BOLTS, NUTS AND WASHERS INSTALLED

_______ IN THE HOLES FITTED WITH FLANGED BUSHINGS.
1 Remove the 7 bolts (190) nuts (210) and 4 washers (200)
_ securing TGB housing and the LH support bracket to the horizontal drive shaft housing.
Subtask 72-62-00-020-052
C. Removal of the TGB from the Fan Frame.
(1) Install PROTECTOR - MOUNTING PIN (856A2537G01) on the external threads of the mounting pin (400).

(2) Install impact puller into the tapped head of mounting pin (400).

(3) Remove mounting pin (400). Remove the impact puller from the mounting pin.

(4) Separate TGB from fan frame by slowly lowering TGB and fixture assy using a hydraulic hoist platform.

(5) Keep gasket (410) located between AGB and TGB.

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R (6) Remove and discard the O-ring (420) on the horizontal drive shaft.
R (7) Remove the O-ring (430) on the oil distributor in the bevel gear.
R R R NOTE : Make sure that O-ring (430) is serviceable and O-ring outer____ diameter is correct. If it is not serviceable, remove and discard it with soft nose pliers.
R (8) Remove and discard the seal ring (295). (Ref. Fig. 403/TASK 72-62-00-991-302)
R (9) Two different cases may appear after lowering the TGB:
(a) If the radial drive shaft (440) comes with the TGB, remove the shaft from TGB and perform step (12).
(b) If the radial drive shaft (440) remains into the fan frame proceed as follows:
1_ Install PULLER RADIAL DRIVE SHAFT (856A2727G01) to the radial drive shaft.
2_ Attach slide hammer assy CG240 to the puller.
3_ Extract radial drive shaft from fan frame.
R (10) Remove and discard the O-ring (450) located in groove at lower side of shaft.
R (11) Store the radial drive shaft into its storage tube assy.
Subtask 72-62-00-420-056
D. Installation of blanking plugs and covers and handcranking assy.
(1) Installation of blanking plugs and covers on the TGB.
(a) Install cover (510) onto forward face of TGB housing.
(b) Install cover (470) onto upper face of TGB housing.
(c) Install plug (500) onto port of TGB vent tube of TGB housing.
(d) Install plug (490) onto scavenge tube port of TGB housing.
(e) Install cap (480) onto TGB oil supply tube nipple.