Dismantling Instructions
Dismantling the GFA Module with Shaft lid generation 1
The instruction below shows an example of a GFA module. The module comprises a housing which contains a number of gears depending on model of the GFA system.
For service tool, see Service Equipment for the specific GFA model.
Secure the housing in a vice and loosen the nut.
Loosen the cover cap.
Remove the bearing housing.
Loosen the hex screws. The module can be fastened with two or four hex screws, depending on the model (2, 3, or 4-stage).
Place the GFA module on a rubber mat. Hit the shafts to loosen the upper and lower part of the housing, and separate the housings.
Remove the output gear.
Note the direction of the output gear (hexagonal shape up or down). It should be placed in the same way when assembling the GFA module.
Remove the idle gears, needle roller bearings, and shafts.
Turn the input gear all the way back to the locked position. Then turn it forward 1/4 of a revolution. Push in the pawl by using a 0.1 mm feeler gauge. Remove the collar back latch.
Remove the pawl and the spring from the collar back latch.
Remove the nut from the bearing housing.
Remove the input gear from the bearing housing. Remove the ball bearing from the input gear if needed.
Remove the needle roller bearing from the input gear.
Dismantling the GFA Module with Shaft lid generation 2
The instruction below shows an example of a GFA module. The module comprises a housing which contains a number of gears depending on model of the GFA system.
For service tool, see Service Equipment for the specific GFA model.
Secure the housing in a vice and loosen the nut.
Turn the GFA module upside down and secure it in the vice. Loosen the two screws securing the shaft lid plate.
Remove the shaft lid plate.
Remove the shaft lid.
Remove the bearing housing.
Loosen the hex screws. The module can be fastened with two or four hex screws, depending on the model (2, 3, or 4-stage).
Place the GFA module on a rubber mat. Hit the shafts to loosen the upper and lower part of the housing, and separate the housings.
Remove the output gear.
Note the direction of the output gear (hexagonal shape up or down). It should be placed in the same way when assembling the GFA module.
Remove the idle gears, needle roller bearings, and shafts.
Turn the input gear all the way back to the locked position. Then turn it forward 1/4 of a revolution. Push in the pawl by using a 0.1 mm feeler gauge. Remove the collar back latch.
Remove the pawl and the spring from the collar back latch.
Remove the nut from the bearing housing.
Remove the input gear from the bearing housing. Remove the ball bearing from the input gear if needed.
Remove the needle roller bearing from the input gear.
Removing a Fixed Index Adapter
For service tool, see Service Equipment for the specific GFA model.
Fasten the drive unit, together with the GFA system, in a vice.
Loosen the nut from the adapter.
Remove the GFA unit from the adapter.
Loosen the adapter clockwise to remove it from the drive unit.
The adapter is fixed to the drive unit with Loctite. Loosening the tool from the adapter requires strong force. It is recommended to use a heat gun to facilitate the loosening.
Removing a Fork Adapter
For service tool, see Service Equipment for the specific GFA model.
Fasten the drive unit in a vice and loosen the nut, using a C-spanner.
Remove the GFA module.
Loosen and remove the adapter from the fork adapter, using a C-spanner.
The adapter is fixed with Loctite. Loosening the adapter requires strong force. It is recommended to use a heat gun to facilitate the loosening.
Loosen and remove the bearing shell adapter from the fork adapter, using a C-spanner.
The bearing shell is fixed with Loctite. Loosening the bearing shell requires strong force. It is recommended to use a heat gun to facilitate the loosening.
Remove the fork adapter from the angle head.
If applicable, fasten the tool's bearing shell to the angle head. Note: this is not the same bearing shell as the one for the adapter, in Step 4.
