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LeeBoy 8520C Conveyor Paver 5-35
Maintenance
Capscrew
(or Bolt)
+
+
Grease
Shaft
Splines
Capscrew
(or Bolt)
O-Ring
(Required)
Figure 5-43. Hydraulic Motor Mount
To avoid contamination:
• Remove all matter from around the ports of the
motor and the threads of ttings.
• Fill the case of the motor being used (piston-type,
gear motor, gerotor motor, geroller motor or vane
motor) with clean hydraulic uid through the highest
case drain port and connect the case drain line.
Failure to do so will result in damage to the motor
through inadequate lubrication on start-up.
• Units that are mounted vertically with the shaft up
require special attention to ensure the uid level in
the case is high enough to lubricate the front shaft
bearing(s).
Once all system connections are made, the motor
should be run for 15 - 30 minutes at no-load and half-
speed to bleed air from the hydraulic system.
Torque HubTorque Hub
If the torque hub has been damaged or worn, use to fol-
lowing procedures for replacement:
1. Raise conveyor and insert safety prop. (Pages 5-6
and 5-7)
2. Loosen the track tension valve on the track tension
manifold to release pressure. (Page 5-50)
3. Remove master pin in the track chain behind the
front idler (bottom side).
4. Back paver up until track lays at on the ground.
5. Jack up the paver at least two feet off the ground
for enough clearance under the undercarriage and
place on sturdy jack stands.
6. Remove the two cap screws and lock washers
attaching the drive motor to the torque hub drive.
NOTE: DO NOT disconnect hoses from the hydraulic
drive motor. Hoses are long enough to
slide the motor out. Clean hoses before
reinstalling.
NOTE: Mark location of torque hub to the
undercarriage before removing to ensure the
drive motor is reinstalled in the same position.
NOTE: Sprocket can be removed before the torque
hub by removing the rear track roller and bolts
in the sprocket.
7. Remove bolts holding torque hub to track
undercarriage. (Figure 5-44)
M16
Bolts
(16)
Figure 5-44. Torque Hub
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