1
1
6
6
6
6
O
O
p
p
e
e
r
r
a
a
t
t
i
i
n
n
g
g
I
I
n
n
s
s
t
t
r
r
u
u
c
c
t
t
i
i
o
o
n
n
s
s
–
–
3
3
5
5
8
8
8
8
0
0
1
1
1
1
6
6
0
0
1
1
E
E
N
N
–
–
1
1
2
2
/
/
1
1
1
1
Maintenance
Maintenance
5
5
Troubleshooting
Troubleshooting
Troub
Troublesh
leshooti
ooting
ng guid
guide
e Hydra
Hydraulic
ulic syst
system)
em)
S
Su
uc
cttiio
on
n fi
filltte
err rre
es
sttrriic
ctte
ed
d.
.
R
Re
en
ne
ew
w tth
he
e fi
filltte
err..
Suc
Sucti
tion
on hos
hoses
es le
leaki
aking,
ng, oil
oil foa
foami
ming.
ng. Tighten
Tighten lines. Replace suct
lines. Replace suction
ion
hoses. Check oil level, top up if
hoses. Check oil level, top up if
necessary.
necessary.
Hydraulic pump or motor
Hydraulic pump or motor failure,
failure,
sea
seals
ls def
defect
ective
ive,, cau
causin
sing
g ai
airr int
intake
ake..
Have hydraulic unit inspected by
Have hydraulic unit inspected by
your
your autho
authorise
rised
d deal
dealer.
er.
Abnormal
Abnormal noise
noise
Inc
Incorr
orrect
ect oil
oil vis
viscos
cosit
ity,
y, low oi
low oill lev
level
el
in
in ta
tank
nk or
or in
in hy
hydr
drau
auli
lic
c pu
pump
mp..
Change oil, be sure to use the
Change oil, be sure to use the
cor
correc
rectt vi
visco
scosi
sity,
ty, top
top up
up oil
oil..
Pu
Pump
mp su
suct
ctio
ion
n de
defe
fect
ctiv
ive,
e, no
nois
ise.
e.
Ch
Chan
ange
ge oi
oil,
l, to
top
p up
up oi
oil.
l. Co
Cont
ntac
actt yo
your
ur
auth
authorise
orised
d deal
dealer.
er.
Pump failure, leakages, pressure
Pump failure, leakages, pressure
valves do not close, valve seat
valves do not close, valve seat
damage.
damage.
Cont
Contact
act your
your auth
authoris
orised
ed deal
dealer.
er.
P
Piip
pe
e b
brro
ok
ke
en
n o
orr lle
ea
ak
ky
y.
.
R
Re
ep
plla
ac
ce
e o
orr ttiig
gh
htte
en
n lliin
ne
e..
Oil of low
Oil of low viscosity, causing high
viscosity, causing high
leakage losses.
leakage losses.
Change oil, be sure to use oil of
Change oil, be sure to use oil of
corre
correct
ct visco
viscosit
sity.
y.
No or too low
No or too low
pre
pressu
ssure
re in
in sys
system
tem
Oil temperature warning lamp
Oil temperature warning lamp
illuminated.
illuminated.
Ch
Chec
eck
k oi
oill le
leve
vel,
l, cl
clea
ean
n oi
oill co
cool
oler
er..
Ca
Caus
use
e as
as un
unde
derr ab
abno
norm
rmal
al no
nois
ise.
e.
Se
See
e ab
abno
norm
rmal
al no
nois
ise.
e.
Pressure limiting valves or boost
Pressure limiting valves or boost
press
pressure
ure valve
valves
s stic
sticking
king..
Cont
Contact
act your
your auth
authoris
orised
ed deal
dealer.
er.
Lift and tilt cylinders have tight
Lift and tilt cylinders have tight
spots.
spots.
Cont
Contact
act your
your auth
authoris
orised
ed deal
dealer.
er.
Oil pressure
Oil pressure
fluctuating
fluctuating
Mast does not
Mast does not extend compl
extend completely
etely
or retracts slightly after being
or retracts slightly after being
extended.
extended.
To
Top
p up
up hy
hydr
drau
auli
lic
c oi
oil.
l.
Fil
Filte
terr res
restr
trict
icted
ed (if
(if acc
accom
ompan
panie
ied
d by
by
noise).
noise).
Cle
Clean
an or
or rep
replac
lace
e filt
filter.
er.
Pump failure, leakages, pressure
Pump failure, leakages, pressure
limi
limitin
ting valves
g valves do not
do not clos
close, valv
e, valve
e
seat
seat dama
damaged.
ged.
Cont
Contact
act your
your auth
authoris
orised
ed deal
dealer.
er.
P
Piip
pe
e b
brro
ok
ke
en
n o
orr lle
ea
ak
kiin
ng
g.
.
T
Tiig
gh
htte
en
n o
orr rre
ep
plla
ac
ce
e lliin
ne
e..
Valv
Valves
es rest
restrict
ricted.
ed.
Cont
Contact
act your
your auth
authoris
orised
ed deal
dealer.
er.
No oil flow or low oil
No oil flow or low oil
flow
flow
Hydra
Hydraulic
ulic syst
system
em overh
overheati
eating.
ng.
Check
Check oil
oil level,
level, use
use specified
specified oil,
oil,
cl
clea
ean
n oi
oill co
cool
oler
er,, if
if ne
need
eded
ed..
https://www.besttruckmanuals.com/
Summary of Contents for H120-1200
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Page 11: ...1 1 Introduction Introduction https www besttruckmanuals com ...
Page 19: ...2 2 Safety Safety https www besttruckmanuals com ...
Page 27: ...3 3 Overview Overview https www besttruckmanuals com ...
Page 35: ...4 4 Operation Operation https www besttruckmanuals com ...
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Page 188: ...6 6 Tec Techni hnical cal dat data a https www besttruckmanuals com ...
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