4.3.2 Standard mast with two stage triplex mast (DZ)
Three-stage mast design (DZ)
The three-stage mast (DZ) consists of the following components:
– Outer mast.
The outer mast is rigidly connected to the basic truck.
– Intermediate mast.
The intermediate mast runs in the outer mast.
– Inner mast.
The inner mast runs in the outer mast.
– Fork carriage with forks.
The fork carriage runs in the inner mast.
– The DZ mast always has free lift. The free lift corresponds to the maximum lift
height to which the fork carriage can be lifted before the height of the lift mast
changes. The free lift allows the load to be raised from the ground without
affecting the dimension "lift mast lowered (h
1
).
Operating principle of the three-stage mast (DZ):
When operating the hydraulic "lift" function, the centre-mounted free-lift cylinder
completely lifts the fork carriage by chains. The intermediate mast is then lifted by
the two outer hydraulic cylinders. At the same time, the inner mast is raised by
chains.
Z
For a description of hydraulic "lift" function, see page 171.
WARNING!
Risk of collision caused by the load when the free lift is fully extended
When the fork carriage is fully raised, the height over the load can exceed the
dimension "lift mast lowered“ (h
1
). The operator must take the height of the raised
load into account when operating the truck (e. g. when driving through doorways,
when the ceiling is low, etc.).
u
When operating the truck, ensure that the load does not collide with obstacles.
Description EFX 410 EFX 413
h
1
Mast height lowered 2100 – 3180 2100 – 3180 mm
h
2
Free lift 1410 – 2490 1410 – 2490 mm
h
3
Lift 4000 – 7000 4000 – 7000 mm
h
4
Mast height extended 4690 – 7690 4690 – 7690 mm
h
6
Height of overhead guard
2277
1)
2277
1)
mm
h
7
Seat height 1205 1205 mm
1 with a strobe light this dimension increases to approx. 2377 mm
34
04.19 en-GB
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