LeeBoy 8515E - Two-Speed Hydraulic Motors; Hydraulic Pump;Motor Start-Up

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LeeBoy 8515E Conveyor Paver 5-33
Maintenance
Two-Speed Hydraulic MotorsTwo-Speed Hydraulic Motors
1. Move paver onto a level ramp where you can
access the undercarriage.
2. Raise conveyor bed and insert safety prop. (Page
5-5)
3. Disconnect, label and plug ttings on hydraulic
hoses to the hydraulic motors. (Figure 5-37)
Hydraulic
Motors
Torque Hubs
(Both Sides)
Figure 5-37. Hydraulic Motors and Torque Hubs
4. Place blocks sufcient to support the hydraulic
motors underneath them.
5. Remove the two screws and lock washers attaching
the hydraulic motor to the torque hub and carefully
separate motor from the torque hub. (Figure 5-38)
Figure 5-38. Remove Hydraulic Motor
6. Remove the O-Ring and drain hydraulic oil from the
motor. Discard or repair the motor as appropriate.
7. Lubricate a new O-ring with hydraulic oil and install
onto the torque hub.
8. Reattach new or rebuilt hydraulic motor to torque
hub and torque. (See Torque Specications in
Section 2)
9. Reconnect hydraulic hoses.
10. Start the engine and let machine run for 10 minutes
to work air out of the system. Check for any leaks.
Hydraulic Pump/Motor Start-UpHydraulic Pump/Motor Start-Up
Pre-StartPre-Start
If the hydraulic system is down as a result of a major
component failure:
1. Drain and clean the tank and system components
(hoses, valves, ttings and cooler) to ensure it is
free from metallic debris and other contamination.
Failure to do so may result in damage to the pump(s)
and/or other components on start-up.
2. Change all the lters.
3. Change the uid. On large systems where the cost
of changing the uid may be prohibitive, the uid
should be ltered until a cleanliness level of ISO
4406 18/13 or better is achieved.
Installation and Start-UpInstallation and Start-Up
When installing hydraulic motors, it is important that the
mounting ange of the motor makes full contact with the
mounting surface of the application. Mounting hardware
of the appropriate grade and size must be used:
1. Use Grade 8 socket-head capscrews to attach the
motor.
2. Install lock washer over capscrew. (Figure 5-38
on the following page.)
3. Apply Loctite 243 (blue) to the capscrew threads.
4. Install extra thick, hardened H-D thick washers over
the capscrew.
5. Install the capscrew-hardened washer and lock
washer in the SAE two-bolt ange.
6. Torque the capscrew to the wet torque value
dened for the capscrew grade and size. (See
Torque Specications in Section 2)
7. It is CRITICAL to use the correct
mounting hardware.
Hubs, pulleys, sprockets and couplings must be
properly aligned to avoid inducing excessive thrust or
radial loads. Although the output device must t the
shaft tightly, a hammer should never be used to install
any type of output device onto the shaft. The port
plugs should only be removed from the motor when the
system connections are ready to be made.