Telescopic Boom Series
Models SJ61T & SJ66T
194312
December 2007 Page 185
Section 5 - Procedures Service and Maintenance
Turret
5.3-1 Check and Replace High Pressure
Filter
1. Start engine from base control console.
2. Inspect lter restriction indicator gauge. (The
lter should be operating with the gauge
pointing to the green area. If it is in the red
area, the lter needs to be replaced)
3. Turn engine off.
4. Place a suitable container under lter.
High Pressure Filter
Bolt
Housing
Head
Filter
5. Using a 30 mm box wrench, loosen bolt and
remove high pressure lter housing from
lter head.
6. Remove high pressure lter from lter head
and install a new high pressure lter.
7. Apply hydraulic oil to the o-ring on the high
pressure lter housing.
8. Reinstall lter and re-tighten bolt. For torque
specication, refer to Section 2.
5.3-2 Adjust Turret Rotation Gear
Backlash
The swing drive motor is located in the engine com-
partment.
NOTE
The adjustment of the backlash must be
performed on a at level surface.
1. Ensure aerial platform is on a firm level
surface.
Swing Drive Assembly
Swing Drive Motor
Mount Fastener
Adjustment Bolt & Nut
2. Loosen mounting fasteners on the swing
drive motor.
3. Push the swing drive motor towards the
turret as close as possible. (this will push
the rotation gear into the rotation bearing)
4. Loosen lock nut on adjustment bolt.
5. Tighten adjustment bolt clockwise until it
contacts the plate of gearbox.
6. Turn adjustment bolt ½ turn counterclockwise,
then tighten lock nut on adjustment bolt.
7. Pull swing drive motor away from turret until
it contacts the adjustment bolt.
8. Tighten mounting fasteners on swing drive
motor.
7. Rotate turret through an entire rotation and
check for a smooth rotation of the turret.
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