Vespa GTS Super 300 ie - Service manual > Steering column

Removal

• Remove the front wheel
• Remove the brake calliper
• Loosen the screw fixing the odometer cable plate and take out the cable.

• Remove the suspension arm housing by unscrewing the three screws indicated in the photograph.

• Remove the retainer fixing the odometer cable to the mudguard indicated in the photograph

• Remove the retainer fixing the brake piping to the front shock absorber upper plate

• Remove the retainer fixing the brake piping to the suspension arm

• Pre-loosen the 3 nuts fixing the mudguard to the suspension

• Remove the rear handlebar cover.
• Remove the screw fixing the handlebar to the steering tube
• Tilt the handlebar towards the shield back plate being careful not to scratch the plastic parts

• Remove the steering tube ring nut cover

• Use a specific tool to remove the counter-ring nut, the spacer washer and the ring nut of the upper disk of the fifth wheel fitting
• Slide off the steering tube and remove permanently the mudguard from the suspension

Specific tooling
  020055Y Wrench for steering tube ring nut

Overhaul

Carry out this operation only if strictly necessary and in any case remove and replace the old part with a new one.

• Remove the steering tube
• Use a special tool remove the upper disk of the fifth wheel fitting seat on the headstock by operating form the lower part of the headstock as indicated in the photograph. Afterwards remove the lower disk of the fifth wheel operating from the upper part

Specific tooling
  020004Y Punch for removing steering bearings from headstock

• Remove the fifth wheel fitting and the dust gaiter on the steering bearing as shown in figure, using the specific tool. Proceed giving a few taps with the mallet.

Specific tooling
  020004Y Punch for removing steering bearings from headstock

• Refit the fifth wheel fitting and the dust gaiter on the steering bearing until they stop, using the specific tool.

Specific tooling
  006029Y Punch for fitting steering bearing seat on steering tube

• Use the specific tool to fit the fifth wheel fitting on the headstock as indicated in the figure

Specific tooling
  001330Y Tool for fitting steering seats

• Remove the steering tube
• Remove the attachment bracket
• Use the specific tool with the part 1 and operate the handgrip until removing temporarily the pin and the Nadella opposite the tool thrusting direction.
• To extract the second Nadella, use the tool with the part 2, instead of part 1, on opposite side to the one indicated in the figure.

Specific tooling
  020021Y Front suspension service tool

• Fit both dust guard rings "C" on the swinging hub as shown in the detail drawing "A".
• Connect the swinging hub to the steering tube with the guiding pin, part 5.
• Use the specific tool fitted with part 3 on the stem and part 4 on the tool base.
• Lubricate the pin with recommended grease and insert it temporarily on the swinging hub, move the tool handgrip until part 3 is fully inserted on the steering tube.

• Once the pin has been fitted, insert the two spacers part 17 slightly hitting with a mallet (see next figure).

CAUTION

USE NEW ROLLER CASINGS, PIN, SEALING RINGS AND DUST GUARDS FOR REFITTING.

Specific tooling
  020021Y Front suspension service tool

Recommended products

AGIP GREASE PV2 Ivory smooth-textured, slightly-stringy anhydrous calcium-base grease.

TL 9150 066, NATO G 460 symbol

To fit sealing rings, roller casings and wedging washers proceed as follows

• Lubricate the sealing rings with mineral oil and half-fill the roller casings with recommended grease.
• Insert the sealing ring on the pin and the roller bushing with wedging washers at the same time.
• Remove the specific tool and then the part 5 (guide) partially ejected in the previous assembly stage; part 4 must be always fitted.
• Replace part 3 with part 16 on the stem.
• Push, from the handgrip, the wedging washer - roller casing - sealing ring unit, placing part 16 until it stops on the swinging hub
• Repeat the operation described above using the tool fitted with part 16 and part 22* instead of part 4 on the stem, on the side opposite the one shown in the figure to refit the second wedging washer - roller casing - sealing ring unit.

To position roller casings on the pin (pin end in contact with the internal bottom of the roller casings) proceed as follows:

• Use the tool with part 20 and 21 fitted to the stem as indicated in the figure.
• Push the two roller casings with the handgrip until their bottoms make contact with the pin end.
• Use the specific tool fitted with parts 3 and 4 as indicated for fitting the spin and push with the handgrip until the washer is wedged in the swinging hub.
• Remove the spacers, part 17; fill with recommended grease the area between the steering tube and the swinging hub, and place the dust guard rings in that place.

Recommended products

AGIP GREASE PV2 Ivory smooth-textured, slightly-stringy anhydrous calcium-base grease.
TL 9150 066, NATO G 460 symbol

Refitting

To refit, carry out the removal operations but in reverse order; grease the fifth wheel fittings and tighten at the specified locking torques

Locking torques (N*m)
Handlebar to steering tube 45 ÷ 50 Steering upper ring nut 35 - 40 Steering lower ring nut 12 - 14

See also: