RMX SERIES
1-33
R M X S e r i e s
T e r e x S o u t h D a k o t a
4 8 3 0 1 8 - 3 / 1 5
OPERA
T
ION GUIDELINES
SETTING THE OUTRIGGERS
Before lifting or rotating the Aerial Device, all outriggers (if equipped) must be lowered firmly to the ground
on a surface that can support the load, and kept there until all work is complete and the Aerial Device is
stowed for travel. The stability of the Aerial Device depends on the gross weight of the vehicle, platform and
jib load, the slope of the ground in the work area, and whether the ground is firm enough to support the load
imposed. The condition of the truck tires, axles, torsion bars, outriggers and outrigger pads or cribbing all
contribute to proper stability. These conditions are widely variable, so the operator must exercise good
judgment and caution when setting the outriggers before utilization of the Aerial Device.
The method of setting the outriggers will vary depending on the number of outriggers and configuration. If
the vehicle is equipped with one set of outriggers, the tires and the spring force of the truck axle work with
the outriggers to provide stability. The location of the outriggers relative to the truck axles and the pedestal
will determine how much the outriggers can be extended.
When lowering the outriggers:
• Determine if truck is properly parked with brakes applied and wheels chocked.
• Position the outrigger pads and ensure that the surface will support the outrigger force, crib as
required.
• Before lowering the outriggers, check the area where the outriggers will extend to ensure no
personnel or other objects are in the path. Alert all personnel that the outriggers are being moved and
positioned.
• Units with one set of outriggers behind the rear axles on rear axle mounts, extend the outriggers until
the weight of the vehicle is off the springs. Rear tires must remain on the ground. More outrigger
extension is allowed the closer the axle is located to the outrigger.
• Units with one set of outriggers between the axles on behind-the-cab mounts, set the outriggers firmly
on the ground, but do not raise the weight of the vehicle off the springs. Tires must remain on the
ground with the truck suspension providing equal support on each side of each axle.
• Do not attempt to correct the ground slope with the outriggers; this unloads the low side tires and
suspension. The suspension may not provide enough force for stability.
• After setting the outriggers evaluate the truck position and setup. Determine if the tires are equally
supporting the load by looking at the clearance to the fenders, body, or bed and the axle location to
the axle stop, (rubber bumper) and overload springs. If one tire is closer to the body and the other
tires on the opposite side of the same axle is father away from the body the unit is not set up
properly. The spring deflection on each side must be the same or the overload springs or rubber
bumper both in contact with their stops. Tires on the low side must be cribbed to equalize the truck
suspension load so it can provide the force needed for stability if not equally loaded as parked.
419268A
and its contact point.
and obstructions are clear of the outrigger
or a signal person can see that personnel
Do not operate any outrigger unless you
OUTRIGGER CONTACT
WILL CAUSE
SERIOUS CRUSHING INJURY
419269
OUTRlGGER CONTACT WILL CAUSE
SERIOUS CRUSHING INJURY
STAND CLEAR
