VESPA 664787 Service Station Manual page 104

Suspensions
- Repeat the above operation using the tool with
part 16 and part 22, instead of part 4, always fitted
to the stem, on the side opposite that indicated in
the figure to fit the second wedging washer - roller
bushing - sealing ring unit.
WARNING
BEFORE PROCEEDING WITH THE DESCRIBED PRE-FIT-
TING, DIP THE SEALING RINGS IN MINERAL OIL AND THE
"NADELLA" ROLLER BUSHINGS (PREVIOUSLY WASHED
IN PURE PETROL OR NEUTRAL PETROLEUM TO ELIMI-
NATE THE ANTIRUST PROTECTION), HALF-FILLED WITH
GREASE.
Specific tooling
020021Y Front suspension service tool
Recommended products
AGIP GREASE MU3 Grease for odometer
transmission gear case
Soap-based lithium grease with NLGI 3; ISO-L-
XBCHA3, DIN K3K-20
- Use the tool fitted with part 20 on its stem and
part 21 on the tool base as shown in the figure.
- By moving the tool handgrip, push the two NA-
DELLA bushings until their internal bottoms make
contact with the pin end.
- Use the tool fitted with parts 3 and 4 to fit the pin,
and press moving the tool handgrip, until wedging
the washers on the swinging hub.
- Now, remove the two spacers (parts 17 and 16)
and, once the space between the NADELLAs -
steering tube and swinging hub - has been fully
filled with grease, move the dust guard rings until
they are placed in that space.
- By wedging the washers as described above, the
front suspension unit refitting stage is finished.
Recommended products
AGIP GREASE MU3 Grease for odometer
transmission gear case
Soap-based lithium grease with NLGI 3; ISO-L-
XBCHA3, DIN K3K-20
SUSP - 104
Vespa S 50 2T