Pinguely-Haulotte HA20PX, Repair Manual

Page: 263 / 282

CORRECTIVE MAINTENANCE SHEET
Folio 1/3
CHANGING THE SLEW RING
Sheet C106
Caution!
Ensure that the oil is not too
hot.
Caution!
Ensure 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.
1
2
1 - Preliminary operations
• Move the turntable to the locking position.
• Put the machine in the maintenance configuration (see corresponding
paragraph).
• Switch off electric power (see corresponding paragraph).
2 - Removing the slew ring
• Open the chassis box (1), mark and disconnect all electric connectors (2).
• Free the electric wiring harness (3) of the swing joint (4) after marking its
path.
• Mark and disconnect the hoses of the swing joint (4) under the chassis
(travel motor oil supply and return).
NB: Unscrew the hoses slowly to release residual hydraulic pressure.
• Put caps on the hoses.
• Remove the swing joint’s rotation stop screw (5).
• Put the turntable in slings and unlock the turntable rotation blocking pin.
• Remove the 24 screws (6) and washers fixing the slew ring to the lower
part (7) of the machine.
• Remove the turntable carefully, avoiding damage to the swing joint (4).
• Wedge the ring (8), mark its position in relation to the turntable.
• Remove the 24 screws (9), bolts (10) and washers fixing the slew ring (8)
to the turntable.
• Free the turntable.
3 - Installing the slew ring
• Put the slew ring (8) into place on suitable supports in the position marked
during dismantling.
• Position the turntable on the ring.
• Fix the ring with the 24 screws (9), bolts (10) and washers without pre-
stressing.
• Tighten in a star pattern (see figure 2) to a torque of 27 m.daN (199 lb.ft).
• Place the tur ring assembly on the chassis in the locking position.
• Fix the ring (8) to the chassis (7) using the 24 screws (6) and washers
without pre-stressing.
• Tighten in a star pattern (see figure 2) to a torque of 27 m.daN (199 lb.ft).
• Remove the slings from the turntable.
• Put back the rotation stop screw (5) of the swing joint (4).
• Reconnect the hoses of the swing joint (4) according to the marks made
during dismantling.
• Reconnect the electric connectors (2) of the chassis box (1) according to
the marks made during dismantling.
• Adjust the position of the reducing gear (11) using the adjusting screws
(12) and (13):
- Turn the reducing gear to position the ring teeth marked with a colour
opposite the reducing gear pinion (this coloured mark corresponds to the
most excentric point of the ring).
- Adjust the gap between the teeth to 300
µ
m with a set of flakes.
- When the gap is set, block the counter-nuts of the adjustment screws
(12) and (13).
4 - Additional operations
• Put the machine back in the operational configuration.
• Lubricate the ring.