RMX SERIES
1 - 4 6
4 8 3 0 1 8 - 3 / 1 5
T e r e x S o u t h D a k o t a
R M X S e r i e s
OPERA
T
ION GUI
D
ELI
N
ES
WHAT CAN HAPPEN WHEN HYDRAULIC LINES FAIL?
Hydraulic oil, when confined within the hydraulic system and properly maintained, is non-conductive and not
subject to being ignited. There are numerous hazards that develop when there is a hydraulic line separation:
• Personnel may suffer burns from contact with hot oil.
• A vacuum may be created in the line and breech the insulated portion of the booms causing the Aerial
Device to be conductive.
• If the hydraulic line failure creates a mist of oil, it very easily can be ignited by any outside source of
ignition; such as, electric arcing, sparks, and flames.
• The reservoir may be drained of oil, which will make the Aerial Device inoperable.
WHAT TO DO IF HYDRAULIC LINES FAILS?
A quick response to stop oil flow caused by a hydraulic line failure is important to prevent further damage
and prevent injury.
The following sequence can be used to stop the flow.
From The Platform
• Release the function being operated. Shut off tool valve if tool, tool hoses, or tool connections are
involved.
• Activate the stop control, which will divert the flow back to the tank.
• Activate the engine stop/start switch, if so equipped. This will stop the engine driving the pump.
• Get ground assistance if all these fail.
From The Vehicle Bed
• Move the control selector at the lower controls to the lower control position. This will stop all flow to
upper controls.
• Push the engine stop/start switch, if so equipped. This will stop the engine driving the pump.
From The Ground
• Shut off the pump engine. This will stop the pump.
• Disengage the power take-off. This will stop the pump.
• Move the control selector at the outrigger control valve to the outrigger position. This will stop all flow
to the Aerial Device and send it to the outrigger circuit.
• Push the engine stop/start, if so equipped. This will stop the engine driving the pump.
Once the flow is stopped, determine where the line failure is located. The following examples describe some
emergency procedures that can be followed for some specific types of hydraulic line failures:
• If the line failure is between the upper and lower controls, overriding the upper controls and only
operating from the lower controls may reduce the rate of hydraulic oil loss. The intermittent loss of
hydraulic oil may allow the Aerial Device to be stored.
• It may be necessary to use another Aerial Device to bring the operator down.
NOTE: Oil spills may require notifying Local, State, or Federal Authorities.
The vehicle may be energized. If mounting or operating the vehicle from the ground, use
proper personal protective equipment; such as rubber gloves, rubber boots, rubber mats,
and/or a hot stick. See Emergency Operation section for procedure to approach vehicle.
The Aerial Device must not be operated until repairs have been completed and the Aerial
Device cycled from the lower controls to purge air.
