Pinguely-Haulotte HA20PX, Repair Manual

Page: 231 / 282

CORRECTIVE MAINTENANCE SHEET
Folio 1/2
DISMANTLING / RE-ASSEMBLING THE JIB
Sheet C069
Caution!
Ensure that the oil is not too
hot.
Caution!
Make sure that the lifting
equipment is in good
condition and of sufficient
capacity.
Caution!
Use a container to collect oil
to prevent pollution of the
environment.
Caution!
It is essential to put the
component in slings before
dismantling/re-assembling it.
1 - Preliminary operations
• Put the machine in the maintenance configuration (see corresponding
paragraph).
• Switch off electric power (see corresponding paragraph).
• Remove contactor SQ2 (see corresponding sheet).
2 - Removing the psupport assembly
• Mark and disconnect the electric connections at the platform box.
• Mark and disconnect the hydraulic hoses of the platform rotation motor
and the jib cylinder (1).
NB: Unscrew the hoses slowly to release residual hydraulic pressure.
• Fit caps to the hoses.
• Open the two cable passage collars on the platform, and the three collars
along the jib.
• Mark the path of the electric cables and hoses, then remove all cables
passing along the length of the jib.
• Put the platform into slings.
• Put the jib cylinder (1) and vertical elements (2) and (3) into slings.
• Remove the four bolts and pin stop rings (5) fixing the platform assembly
(4).
• Remove the two Mécanindus pins blocking the pins (5).
• Remove the two pins (5) and remove the platform assembly.
3 - Removing the jib
• Mark the position of the cam (6) of sensor SQ2 (7).
• Remove the two pins (8) fixing the jib to the jib link part, as described
above, then remove the vertical parts of the jib (2) and (3) and the cylinder
(1).
4 - Removing the jib link part (9)
• Put the jib link part into slings (9).
• Put the receiver compensation cylinder into slings (10).
• Remove the Mécanindus pin blocking the pin, then remove the pin (11) of
the receiver compensation cylinder (10).
• Remove the male clevis blocking the link part rotation pin (12) by remo-
ving its fixing screw.
• Remove the rotation pin (12) then remove the jib link part (9).
5 - Installing the jib link part
NB: Lubricate all bores before re-installing the pins.
Only use lubricants recommended by the manufacturer.
• Check the condition of the rings of the different jib pins, and replace if
necessary.
• Put the jib link part back into place.
• Install the link part rotation pin.
• Install the clevis and block using the screw, previously coated with normal
blue loctite 243.
• Install the receiver compensation cylinder pin and block with a new Méca-
nindus pin.