Vespa GTS Super 300 ie - Service manual > End gear
Removing the hub cover
- Empty the rear hub through the oil drainage plug.
- Remove the 7 flanged screws indicated in the figure.
- Remove the hub cover and its gasket.
Removing the wheel axle
- Remove the wheel axis complete with gear.
- Remove the intermediate gear.
Removing the hub bearings
- Check the state of the bearings being examined (wear, clearance and noisiness). If faults are detected, do the following.
- Use the specific bearing extractor to remove the three 15 mm bearings (2 in the crankcase and 1 in the hub cover).
Specific tooling
001467Y013 Calliper to extract ΓΈ 15-mm bearings
Removing the wheel axle bearings
- Take out the clip on the outside of the hub cover.
- Support the hub cover and expel the bearing.
By means of the appropriate tools, remove the oil guard as in the figure.
Specific tooling
020376Y Adaptor handle
020477Y 37 mm adaptor
020483Y 30-mm guide
020359Y 42 x 47-mm Adaptor
020489Y Hub cover support stud bolt kit
Removing the driven pulley shaft bearing
- As you need to remove the driven pulley shaft, its bearing and oil seal, remove the transmission cover as described above.
- Extract the driven pulley shaft from its bearing.
- Remove the oil seal using a screwdriver, working from inside the bearing and being careful not to damage the housing, make it come out of the belt transmission side.
- Remove the Seeger ring shown in the figure
- Remove the driven pulley shaft bearing using the modular punch.
Specific tooling
020376Y Adaptor handle
020375Y 28 x 30 mm adaptor
020363Y 20-mm guide
Inspecting the hub shaft
- Check the three shafts for wear or distortion of the toothed surfaces, the bearing housings, and the oil seal housings.
- If faults are found, replace the damaged components.
Inspecting the hub cover
- Check that the fitting surface is not dented or distorted.
- Check the bearing bearings.
- In case of faults, replace the damaged components.
Refitting the wheel axle bearing
- Support the hub cover on a wooden surface.
- Heat the crankcase cover with the specific heat gun.
- Fit the wheel shaft bearing with a modular punch as shown in the figure.
- Fit the Seeger ring.
- Fit the oil guard with seal lip towards the inside of the hub and place
it flush with the internal surface by means of the appropriate tool used
from the 52-mm side.
The 52-mm side of the adapter must be turned towards the bearing.
Specific tooling
020376Y Adaptor handle
020360Y 52 x 55-mm Adaptor
020483Y 30-mm guide
Refitting the hub cover bearings
In order to fit the hub box bearings, the engine crankcase and the cover must be heated with the special heat gun.
- The three 15-mm bearings must be fitted using the appropriate tools:
- The 42-mm side of the adapter must be turned towards the bearing.
Specific tooling
020150Y Air heater mounting
020151Y Air heater
020376Y Adaptor handle
020359Y 42 x 47-mm Adaptor
020412Y 15-mm guide
N.B.
TO FIT THE BEARING ON THE COVER, ADEQUATELY SUPPORT THE COVER WITH THE STUD BOLT KIT.
- Refit the driven pulley shaft bearing with a modular punch as shown in the figure.
N.B.
IF THE BEARING HAS AN ASYMMETRICAL BALL RETAINER, PLACE IT SO THAT THE BALLS ARE VISIBLE FROM THE HUB INNER SIDE.
Specific tooling
020376Y Adaptor handle
020359Y 42 x 47-mm Adaptor
020363Y 20-mm guide
N.B.
WHEN FITTING THE BEARINGS ON THE ENGINE CRANKCASE, SUPPORT THE CRANKCASE PREFERABLY ON A SURFACE TO ALLOW THE BEARINGS TO BE DRIVEN VERTICALLY.
- Refit the Seeger ring with the opening facing the bearing and fit a new oil seal flush with the crankcase from the pulley side.
Refitting the hub bearings
- Install the three shafts in the engine crankcase as shown in the figure.
Refitting the ub cover
- Fit a new gasket together with the alignment dowels.
- Seal the gasket of the breather pipe using black silicone sealant.
- Fit the gearbox cover, making sure the breather pipe is in the correct position.
- Position the shorter screw that can also be recognised from the different colour as shown in the figure.
- Fix the breather tube support by means of the lower screw.
- Fit the remaining screws and tighten the seven screws to the prescribed torque.
See also:
Vespa GTS Super 300 ie - Service manual > Refitting the driving pulley
Preassemble the movable half-pulley with the roller contrast plate by putting the rollers in their housings with the larger support surface touching the pulley according to the direction of rotation. Check that the roller contact plate does not have flaws and is not damaged on the grooved edge. Mount the complete bushing unit on the crankshaft. Fit the driven pulley/Clutch/belt unit on the engine. Fit the steel shim in contact with the bushing and the stationary drive pulley. Install the appropriate tool as described in the removal phase. Tighten the nut with washer to the prescribed torque.
Vespa GTS Super 300 ie - Service manual > Flywheel cover
Removing the hub cover Remove the clip fixing the sleeve to the cylinder. Remove the 10 clamps Remove the flywheel cover.
