LeeBoy 8510b - Torque Hub Replacement

7
LeeBoy Model 8510B Conveyor Paver 7-31
Maintenance
Torque Hub Replacement
Removal
1. Raise conveyor and insert safety prop (see Raising
Conveyor in Section 7).
2. Loosen track tension cartridge in manifold (located
on rear of bottom hydraulic tank) until pressure
leaks off.
3. Remove master pin in track chain behind front idler
on bottom side.
4. Back paver up until track lays at on ground.
5. Jack paver up approximately 24 in (61 cm) off
ground and place on sturdy jack stands.
Always use safety blocking in addition
to jack when working under paver.
6. Remove the two cap screws (Figure 10-1,47)
and lock washers (Figure 10-1,48) attaching the
hydraulic drive motor (Figure 10-1,44) to the torque
hub drive (Figure 10-1,4).
NOTE: Do not disconnect hoses from the hydraulic drive
motor. Hoses are long enough to slide motor out
and place out of way.
NOTE: Mark location of torque hub to frame before
removing to assure that drive motor is reinstalled
in same position.
NOTE: Sprocket can be removed at ths time before
torque hub is taken out by removing bolts in
sprocket and removing track roller.
7. Remove bolts holding torque hub to track
undercarriage.
NOTE: Before completely removing all bolts from torque
hub, place jack or other method underneath to
safely lower torque hub to ground.
Installation
1. Install torque hub in proper position for drive motor
to line up.
2. Place thread-locking adhesive on torque hub
bolts and torque all bolts to specication (see
Specications in Section 4).
3. Check O-ring on drive motor, replace if worn. Bolt
drive motor to torque hub.
4. Place thread-locking adhesive on sprocket
bolts and torque all bolts to specication (see
Specications in Section 4).
5. Reinstall rear track roller if previously removed.
6. Fill torque hub (see 100-Hour or Monthly Routine
Maintenance in Section 7) with specied oil (see
Specications in Section 4),
7. Lower paver to ground and reconnect track.
NOTE: Removing pad from chain where master pin is
placed will make reconnecting track easier from
top side at idler rear.
8. Tighten track tension cartridge down.
9. Lower paver to ground.
Make sure hose connections are clean
before removing and also before installing.
10. Lower conveyor and bolt hopper wings down.
Do not use the hands on any hydraulic
hose, tting or system component to check the
system for possible leaks. Serious injury can result
from an oil leak under high pressure. Oil can be
injected under the skin by high pressure. Protect the
eyes by wearing safety glasses.
11. Start the engine using the correct procedures (see
Starting The Engine in Section 6).
12. Check the hydraulic system for any leaks.
Stop the engine immediately if any
hydraulic leak is noted. Do not start the engine until
any problem noted has been corrected.
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