162
Section 5 – Procedures Turret
5.5 Turret
5.5-1 Check and Replace the High
Pressure Filter
1. Start the engine from the base control console.
2. Inspect the filter restriction indicator gauge
1
. The filter should be operating with the gauge
pointing to the green area. If it is in the red area,
the filter needs to be replaced.
3. To replace the filter, turn the engine off.
4. Place a suitable container under the filter.
4
3
5
2
1
5. Using a 30 mm box wrench on the filter housing
nut
2
, loosen the filter housing
3
and remove it
from the filter head
4
.
6. Remove the filter element
5
from the filter head
and install a new high pressure filter element.
7. Apply hydraulic oil to the o-ring on the high
pressure filter housing.
8. Reinstall the housing, screwing it in fully, then
backing it off by one quarter turn.
5.5-2 Adjust the Turret Rotation Gear
Backlash
NOTE
The adjustment of the backlash must be
performed on a flat level surface.
1. Raise the riser and support it with a suitably rated
lifting device, or cylinder chocks on both riser
cylinder rods.
2. Slowly lower the riser until it is just above the
supportive device being used.
3. Loosen the mounting fasteners
1
on the swing
drive.
4. Push the swing drive towards the rotation gear as
close as possible (this will push the swing drive
gear
2
into the rotation gear
3
).
4
1
2 35
5. Loosen the lock nut
4
on the adjustment bolt
5
.
6. Tighten the adjustment bolt clockwise until it
contacts the plate of the swing drive.
7. Turn the adjustment bolt ½ turn counterclockwise,
then tighten the lock nut on the adjustment bolt.
8. Pull the swing drive away from the rotation gear
until it contacts the adjustment bolt.
9. Tighten the mounting fasteners on the swing drive.
10. Rotate the turret 360° and check for a smooth
rotation of the turret.
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