Pinguely-Haulotte HA20PX, Repair Manual

Page: 259 / 282

CORRECTIVE MAINTENANCE SHEET
Folio 1/2
CHANGING THE SWING JOINT ASSEMBLY
Sheet C100
Caution!
Put the turntable rotation
blocking pin into place.
Caution!
It is essential to put the
component in slings before
dismantling/re-assembling
it.
Caution!
Ensure that the oil is not too
hot.
Caution!
Use a container to collect oil
to prevent pollution of the
environment.
5
6
1 - Preliminary operations
• Lift the boom sufficiently to enable access to the swing joint.
• Place wedges under the boom to bear its weight.
• Put the machine in the maintenance configuration (see corresponding
paragraph).
• Switch off electric power (see corresponding paragraph).
• If necessary, close the shut-off valve or empty the hydraulic tank.
2 - Removing the swing joint
• Open the chassis box, mark and disconnect all electric connectors (5).
• Open the turntable box, mark and disconnect all electric connectors (6)
from the swing joint wiring harness.
• Free the two electric wiring harnesses (2) of the swing joint after marking
their respective paths.
• Mark and disconnect the hydraulic caps and hoses (1) of the swing joint
(3), on the turntable and below the chassis.
NB: Unscrew hoses slowly to release residual hydraulic pressure.
• Put caps on the hoses.
• Put the swing joint in slings.
• Remove the swing joint’s stop screw (4).
• Remove the screws (7) fixing the swing joint to the chassis.
• Remove the swing joint from underneath the chassis.
3 - Installing the swing joint assembly
• Put the swing joint into place from underneath the chassis, and fix with
fixing screws equipped with new nylstop nuts.
• Put back the swing joint rotation stop screw (4).
• Reconnect the hydraulic hoses and caps on the swing joint according to
the marks made during dismantling.
• Pass the wiring harnesses in the machine along their original paths.
• Reconnect the electric connections in the chassis box and turntable box
according to the marks made during dismantling.
4 - Additional operations
• Put the machine back in the operational configuration.
• Remove the wedges from under the boom.
• Make several steering and travel movements using all possible travel
speeds to purge the hydraulic circuit.
• Check that the electric controls work properly.
• Check the level of the hydraulic oil tank.