Gradall 534D-6T Service Manual - Manual (Page 256)

This Manual details Implement Circuit Performance Checks and Adjustments for all
Gradall C & D Series Material Handlers. Use the Manual in conjunction with the
appropriate Owner/Operator Manual and the appropriate Hydrostatic Drive
Performance Checks Manual. Make sure you read the entire Manual before testing,
adjusting, or troubleshooting on any Gradall Material Handler. Make sure you
understand and comply with all procedures as outlined in the Manual. Make sure you
understand and comply with all safety precautions noted in this Manual, the Owner/
Operator Manual and the Gradall Material Handler Safety Manual.
O RIENTATION
The directions “front”, “rear”, “left”, and “right” indicate the point of view of a person
sitting in the seat in the operator’s cab.
P REPARING T HE M ATERIAL H ANDLER F OR S ERVICE
1. Before performing any maintenance or service, position the material
handler in a safe, open, level area, well away from traffic lanes, buildings,
other equipment or personnel.
2. Set the park brake and shift the transmission to “Neutral”.
3. Lower the forks to the ground.
4. Place the controls in “Neutral”, idle the engine 3 minutes for gradual
cooling then shut the engine off.
5. Cycle the hydraulic controls, remove the ignition key and fasten a “Do Not
Operate” tag to the steering wheel.
6. Dismount from the material handler facing the machine using the proper
hand rails, grab irons and/or ladders provided. Always maintain 3-point
contact with the handler while dismounting or mounting.
7. If you must park on a slope or incline, position the material handler at right
angles to the slope and chock the wheels.
A DDITIONAL M AINTENANCE/ S ERVICE P RECAUTIONS
• If you are working with someone else, make sure they understand the
procedure. Make sure each of you knows what to expect and when to
expect it. Make sure each of you knows where the other is at all times.
• Make sure you wear all the protective clothing and personal safety gear
necessary to perform the service safely.
• Make sure there is adequate light and ventilation in the work area.
• Remove oil, grease, mud, snow, water or any other substance that might
cause slippery surfaces from all climbing, walking, and working areas.
• Clean around the area to be serviced to minimize any possibility of
contamination.
• Use only the correct tools to perform any check, service or repair.
• Make sure any lifting and supporting devices you use are stable and strong
enough to handle the weight of the material handler or component.
• Remove only the guards/covers on the area being serviced. Replace all
guards/covers immediately upon completion of the task.
• If the Material Handler has special optional equipment, make sure that the
appropriate maintenance and operational requirements are understood by
everyone who operates and services the machine.
NOTE!
Steps 4 and 5 clearly relate
to maintenance and service
procedures performed with the
machine shut down. Although
ideal, this may not be possible.
Some procedures can only be
performed with the machine
running. Therefore, this list of
precautions headed
“Preparing the Material Handler
for Service” should be modified
according to the specific
circumstances of a particular
service/maintenance proce-
dure.
I
NTRODUCTION
Since you will occasionally have
to perform service/mainte-
nance procedures with the ma-
terial handler running, you must
take extra precautions to avoid
being injured, perhaps fatally.
At a minimum this means:
• Set the park brake.
• Chock the wheels
• Avoid all exposed moving
parts.
• Post a warning in the
operator’s cab that you
are working on the
machine.
• Work with an assistant.
WARNING !