Pinguely-Haulotte HA20PX, Repair Manual

Page: 269 / 282

CORRECTIVE MAINTENANCE SHEET
Folio 1/1
CHANGING THE EMERGENCY ELECTROPUMP UNIT
Sheet C109
Caution!
Ensure that the oil is not too
hot.
Caution!
Use a container to collect oil
to prevent pollution of the
environment.
2
3 4
5
2
1
6
1 - Preliminary operations
• Put the machine in the maintenance configuration (see corresponding
paragraph).
• Switch off electric power (see corresponding paragraph).
• Disconnect the « - » then « + » terminals of the starter battery.
2 - Removing the emergency electropump unit
• Mark the connections and path of the electric wires (1) of the electropump
unit (2).
• Disconnect the electropump unit’s electric connections.
• Disconnect the electropump unit’s hydraulic hoses (3).
NB: Unscrew the hoses slowly to release residual hydraulic pressure.
• Put caps on the hoses.
• Remove the pressure limiter (4) of the emergency hydraulic circuit (see
corresponding sheet).
• Unscrew the fixing screws and remove the electropump unit.
• Mark and retain the hydraulic connectors and unions (5) screwed on the
electropump unit.
3 - Installing the electropump unit
• Put the hydraulic unions and connectors retained from the removal opera-
tion in the same places on a new electropump unit.
• Put back the pressure limiter (see corresponding sheet).
• Put the electropump back into place using the fixing screws.
• Reconnect the hydraulic hoses.
• Reconnect the electric wires according to the marks made during dismant-
ling.
• Reconnect the « + » then « - » terminals of the starter battery.
• Put the machine back in the operational configuration.
• Do not start the thermal motor and trip the emergency electropump unit.
• Make several movements to purge the hydraulic circuit.
• Put the machine back in the operational configuration.
• Check the level of the hydraulic oil tank.