VESPA PX 150 USA Workshop Manual page 75

Vespa PX 150 USA
Suspensions
Recommended products
AGIP GREASE SM 2 Grease for odometer
transmission gear case
Lithium grease with NLGI 2 molybdenum disul-
phide; ISO-L-XBCHB2, DIN KF2K-20
Insert the sealing ring on the pin and the roller
bushing with its wedging washer at the same time.
- Remove the tool and the part 5 (guide), which has
been partially ejected during the previous pin fitting
phase, and leave part 4 always fitted.
- Replace part 3 with part 16 (on the stem).
- By moving the tool handgrip, push the wedging
washer - roller bushing - seal ring unit, placing part
16 until it stops on the swinging hub.
- 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.
SUSP - 75