SERVICE MANUAL A-ERGO
SERVICE MANUAL A-ERGO
Hy
Hydr
drau
aulliic s
c sys
yste
tem /
m / R
Re
epa
paiir
r in
inst
stru
ruct
ctiio
on
ns /
s / C
Co
on
ntr
tro
ol v
l val
alve
ve
8
8.2
.29
9
If the correct
If the correct lowering speed has not been obtained (see
lowering speed has not been obtained (see "Checking the lowering speed"
"Checking the lowering speed"
on page 8.28
on page 8.28) adjust the lowering
) adjust the lowering speed valve mounted on the hydraulic valve, see pos.
speed valve mounted on the hydraulic valve, see pos.
1 figure
1 figure 8.12
8.12, until the correct lowering speed is obtained.
, until the correct lowering speed is obtained.
Adjusting the working pressure
Adjusting the working pressure
1.
1.
Place
Place the m
the max t
ax truck
ruck load
load on t
on the for
he forks (s
ks (specif
pecified on
ied on the tr
the truck
uck mach
machine p
ine plate).
late).
2.
2.
Uns
Unscre
crew th
w the ad
e adjust
justin
ing sc
g screw
rew, po
, pos. 2
s. 2 see
see figu
figure
re8.12
8.12, two turns to the left.
, two turns to the left.
3.
3.
At the
At the same t
same time a
ime as the li
s the lift func
ft function fo
tion for the fo
r the fork ca
rk carriag
rriage is a
e is actua
ctuated,
ted, screw
screw in the
in the
adjusting screw until the fork carriage begins to lift fr
adjusting screw until the fork carriage begins to lift from the floor, and then screw
om the floor, and then screw
in an additional ¼ of a turn and lock.
in an additional ¼ of a turn and lock.
4.
4.
Finall
Finally
y, perf
, perform re
orm repeat
peated lift
ed lifting ope
ing operatio
rations to e
ns to ensu
nsure that
re that the lif
the lifting ca
ting capac
pacity is
ity is
sufficient.
sufficient.
5
5..
S
Seeaall!!
Emergency lowering valve
Emergency lowering valve
The emergency lowering valve is used to lower the forks during power failure.
The emergency lowering valve is used to lower the forks during power failure.
Warning!
Warning!
Make sure the forks can be lowered s
Make sure the forks can be lowered safely before the emergency lowering valve is
afely before the emergency lowering valve is
opened.
opened.
1.
1.
Open
Open the
the emerg
emergency
ency loweri
lowering va
ng valve
lve (3) u
(3) using
sing a 2.
a 2.5 mm
5 mm hexa
hexagon
gon wrenc
wrench.
h.
2.
2.
Tig
Tighten
hten the
the emerg
emergenc
ency low
y lowering
ering valv
valve (3
e (3) whe
) when th
n the for
e forks
ks are lo
are lowered
wered..
Figure 8.12
Figure 8.12
Electrically operated proportional valve
Electrically operated proportional valve
El
El
PropVent
PropVent
.
.
eps
eps
1
1
2
2
3
3
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