LeeBoy 685D - Wheel Steering Cylinder

6. Carefully slide the articulate cylinder from the frame
to remove it. Clean the area thoroughly before
installing new cylinder.
7. Position the new articulate cylinder into
place. Insert the cylinder and cotter pins. (It is
recommended that you use new cotter pins.)
8. Complete Steps 3 - 7 on the other side if needed.
9. Reconnect the hydraulic hoses according to the
tags for correct reconnection.
10. Using a grease gun, lubricate the rods on each
cylinder.
11. Start the engine and idle for a few minutes to ensure
the hydraulic oil has warmed in the system.
12. Articulate the boom right and left several times to
ensure proper operation and check for leaks.
Wheel Steering Cylinder
The wheel steering cylinder hydraulically turns the front
wheels right and left. The cylinder can be accessed
without jacking up the front end, but working underneath
provides better access.
It is recommended that you use a
hydraulic lift if available when raising the vehicle.
Otherwise, use jack stands on a solid, at surface
to prevent the machine from tipping when it is
raised. Block the remaining wheels using sturdy
wheel chocks. DO NOT lie under the machine while
supported only by a jack. Death or serious injury can
result from improperly supporting a raised machine.
To replace the wheel steering cylinder:
1. Park the grader on a level surface in a designated
area where oil does not touch or run off onto the
ground.
2. Engage the park brake, shut down the engine, and
place wheel chocks on wheels for safety.
3. Use a block or other means of supporting the
steering cylinder.
4. Disconnect, plug and tag the hydraulic hoses, being
very careful to prevent any contamination when
plugging the hydraulic hose ttings.
NOTE: Inspect the hydraulic ttings. Replace any
damaged or worn ttings.
5. The cylinder end connectors are a tie rod end
shaft connected to the tie rod end housing. While
supporting the cylinder, remove the mounting nut
and washers, then loosen the jam nut. (Figure
5-45)
Steering Cylinder
Jam Nut
Mounting
Nut
Figure 5-45. Wheel Steering Cylinder
6. Use a ball joint removal tool to remove the end
connectors from the frame mounts.
7. Carefully slide the wheel steering cylinder from
the frame to remove it. Clean the area thoroughly
before installing new cylinder.
8. Position the new wheel steering cylinder into place.
9. Reinstall the mounting nut and washers, then
retighten the jam nut.
10. Reconnect the hydraulic hoses according to the
tags for correct reconnection.
11. Using a grease gun, lubricate the rods on each
cylinder.
12. Start the engine and idle for a few minutes to ensure
the hydraulic oil has warmed in the system.
13. Turn the steering wheel right and left several times
to ensure proper operation and check for leaks.
Maintenance
LeeBoy 685D Motor Grader5-38