Equipment Type

Many Factors Keep Lifts Upright

The combined affect of several stability-related issues — even if no single one of them is severe enough to upset a telehandler or aerial-work platform — can result in tipping the machine. For example, if one tire's pressure is low and it comes to a stop on uncompacted ground on the downhill side of a slightly sloping surface, the machine may well be stable enough that not even the ...

November 01, 2006

This is the position of least backward stability for this boom. The machine could tip if operated on a slope with the counterweight downhill, if the upright is extended, or if a combination of other stability factors shifts the center of gravity back.

The combined affect of several stability-related issues — even if no single one of them is severe enough to upset a telehandler or aerial-work platform — can result in tipping the machine. For example, if one tire's pressure is low and it comes to a stop on uncompacted ground on the downhill side of a slightly sloping surface, the machine may well be stable enough that not even the operator notices.

But booming down over that low tire, an overloaded platform or forks, a strong gust of wind, and/or an abrupt control movement could send the machine over.

Don't use the tilt alarm as a level indicator. The tilt alarm, on machines so equipped, typically only sound when the machine is on a severe slope.

  • Always inspect the site for hazardous conditions and the machine for maintenance needs before operating.
  • Remember that booming down usually reduces stability.
  • Know your load, and never overload a boom or telehandler's rating.

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