Doosan D20S-5 Operation & Maintenance Manual page 24

Safety Section Safety Section
Lift Truck Stability Base Lift Truck Stability Base
For the lift truck to be stable (not tip over forward or For the lift truck to be stable (not tip over forward or
to the side), the CG must stay within the area of the to the side), the CG must
lift truck stability base – a triangular area between lift truck stability base – a triangular area between
the front wheels and the pivot of the steer wheels. If the front wheels and the pivot of the steer wheels. If
the CG moves forward of the front axle, the lift truck the CG moves forward of the front axle, the lift truck
will tip forward. If the CG moves outside of the line will tip forward. If the CG moves outside of the line
on either side of the stability base, the lift truck will on either side of the stability base, the lift truck will
tip to the side. tip to the side.
Dynamic forces (braking, acceleration, turning) Dynamic forces (braking, acceleration, turning)
also affect stability and can produce tipover also affect stability and can produce tipover
even when the CG is within the stability even when the CG is within the stability
triangle. triangle.
Capacity Load (Weight and Load Center) Capacity Load (Weight and Load Center)
The capacity load of the lift truck is shown on the The capacity load of the lift truck is shown on the
capacity/nameplate riveted to the truck. It is capacity/nameplate riveted to the truck. It is
determined by the weight and load center. The load determined by the weight and load
center is determined by the location of the CG of center is determined by the location of the CG of
the load. the load.
The load center shown on the nameplate is the The load center shown on the nameplate is the
horizontal distance from the front face of the forks, horizontal distance from the front face of the forks,
or the load face of an attachment, to the CG of the or the load face of an attachment, to the CG of the
load. The location of the CG in the vertical direction load. The location of the CG in the vertical direction
is the same as the horizontal dimensi is the same as
stay within the area of the
WARNING WARNING
center. The load
the horizontal dimension. on.
Remember that, unless otherwise indicated, the Remember that, unless otherwise indicated, the
capacity load shown on the nameplate is for a capacity load shown on the nameplate is for a
standard lift truck with standard backrest, forks and standard lift truck with standard backrest, forks and
mast, and having no special-purpose attachment. mast, and having no special-purpose attachment.
In addition, the capacity load assumes that the load In addition, the capacity load assumes that the load
center is no further from the top of the forks than it center is no further from the top of the forks than it
is from the face of the backrest. If these conditions is from the face of the backrest. If these conditions
do not exist, the operator may have to reduce the do not exist, the operator may have to reduce the
safe operating load because the truck stability may safe operating load because the truck stability may
be reduced. The lift truck should not be operated if be reduced. The lift truck should not be operated if
its capacity/nameplate does not indicate capacity its capacity/nameplate does not indicate capacity
load. load.
NOTE: NOTE: If t If the load is n he load is not uniform,
portion should be placed closer to the portion should be placed closer to the
backrest and centered on the backrest and centered on the forks.
1. 1. Capacity/Nameplates Capacity/Nameplates
forklifts sold by DOOSAN shall not be removed, forklifts sold by DOOSAN shall not be removed,
altered or replaced without DOOSAN's approval. altered or replaced without DOOSAN's approval.
2. 2. DOOSAN assumes no responsibility for lift trucks DOOSAN assumes no responsibility for lift trucks
placed in service without a valid DOOSAN placed in service without a valid DOOSAN
Nameplate. Nameplate.
3. 3. If nece If necessary to change your specification, contact ssary to change your specification, contact
your DOOSAN lift truck dealer. your DOOSAN lift truck dealer.
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ot uniform, the heaviest the heaviest
forks.
NOTICE NOTICE
originally originally attached attached to to