Vespa Primavera 50 - Service manual > Front shock absorber

Removal

• Unscrew the fixing screw of the shock absorber cover and remove the plastic by unscrewing it downwards.

• Remove the swinging hub cover by disengaging the fittings.

• Support the vehicle adequately.
• Remove the wheel hub.
• Remove the seeger indicated in the photograph.
• Unscrew and remove the shock absorber lower retainer.
• Remove the brake calliper shock absorber support.

• Remove the two upper fixing screws.

• Remove the front shock absorber.

Refitting

To refit, carry out the removal operations in reverse order, observing the prescribed tightening torques.

Locking torques (N*m)
shock absorber lower clamping 20 - 27 shock absorber upper clamp 20 to 30

Shock-absorber - calliper bracket

Removal

• Unscrew the fixing screw of the shock absorber cover and remove the plastic by unscrewing it downwards.

• Remove the swinging hub cover by disengaging the fittings.

• Undo the indicated screw and remove the speed sensor.

• Remove the front wheel hub with the brake disc.
• Remove the seeger indicated in the photograph.
• Unscrew and remove the front shock absorber lower retainer.

• Remove the bracket locking Seeger ring
• Unscrew the bracket

• Before refitting the bracket in the wheel axle, place the O-ring as shown in the photograph so that it is correctly placed after fitting the bracket.
• Refit the washer and the Seeger ring.
• Refit the lower screws fixing the shock absorber to the bracket and tighten at the prescribed torque.

Locking torques (N*m)
Lower shock absorber clamp 20 to 27

Overhaul

• Remove the two roller bearings from the bracket with the specific tool operating on the shock absorber attachment side as shown in the photograph

Specific tooling

020376Y Adapter handle
020441Y 26 x 28 mm adaptor
020365Y 22 mm guide

• Remove the oil seal on the wheel hub side with the screwdriver as shown in the photograph

• Suitably hold the brake calliper - shock absorber attachment bracket
• Fit a new oil seal and move it until it stops using the specific tool

Specific tooling

020376Y Adapter handle
020360Y 52 x 55-mm adaptor

• Assemble a new roller bearing on the shock absorber side and move it until it stops using the specific tool

Specific tooling

020036Y Punch

• Suitably hold the brake calliper - shock absorber attachment bracket
• Assemble a new roller bearing on the wheel hub side and move it until it stops using the specific tool

Specific tooling

020037Y Punch

Refitting

• Refit the parts in reverse order of the removal operation.

CAUTION

BEFORE CARRYING OUT REFITTING OPERATIONS IN THE AREAS MARKED WITH AN ASTERISK, LUBRICATE THEM WITH THE RECOMMENDED PRODUCT

Specific tooling

020036Y Punch
020037Y Punch

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

TL 9150 066, symbol NATO G 460

PAY PARTICULAR ATTENTION TO THE FITTING OF THE SPEED SENSOR; PROCEED AS FOLLOWS:

• Mount the sensor on its seat.
• Measure the distance "Y" between the brake disc and the sensor with a feeler gauge.
• Based on the measured distance, insert the calibration thickness number (from the spare parts catalogue) indicated in the table between sensor and support.

Characteristic

Calibration thickness
0.3 +- 0.03 mm

Locking torques (N*m)
Speed sensor fastener screw 8 ÷ 10

SPEED SENSOR MOUNTING

Steering bearing

Removal

• Use the specific tool both to remove the lower seat of the upper bearing and to remove the upper seat of the lower bearing fitted on the chassis.

N.B.

TO REMOVE THE LOWER SEAT OF THE LOWER STEERING BEARING JUST USE A SCREWDRIVER AS A LEVER BETWEEN THE SEATING AND THE SLEEVE.

Specific tooling

020004Y Punch to remove 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 to remove 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

See also: