221
229042ABASJ46 AJ+, SJ46 AJ, SJ51 AJ
Turret Section 5 – Procedures
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 operate 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.
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
The swing drive is located near the center of the turret,
underneath the riser/main boom.
NOTE
The adjustment of the backlash must be
performed on a flat level surface.
WARNING
Make sure there are no personnel or obstructions
in the test area and there is sufficient room for the
boom to lift.
WARNING
The operator must lock the turret to the base to
prevent the turret from turning spontaneously.
1. Lock the turret to the base with the turret lock
pin
1
.
2. Raise the riser boom to access the swing drive
motor.
3. Support the boom with an overhead crane.
4. Turn the main disconnect switch to the off
position
.
4
3
5
2
1
1
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