Komatsu 170-3 Series, Руководство по ремонту, Страница: 130 / 454

12-5-1
170-3 SERIES
TESTING AND ADJUSTING
Component
Name
Connec-
tor No.
Inspec-
tion
Method
Criteria
Measurement
conditions
Fuel rail pressure
sensor
RPR
M
ea
su
rem
e
nt
of
vol
tage
If the condition is within the range shown in the table below,
it is normal.
1) Connect T-adapter
to connector.
2) Turn starting switch
ON.
Timing rail
pressure sensor
TPR
M
e
as
ur
em
en
t of
vo
ltag
ee
If the condition is within the range shown in the table below,
it is normal.
1) Connect T-adapter
to connector.
2) Turn starting switch
ON.
Fuel pump
actuator
FTS/
FLTP
M
ea
sur
em
ent
of
re
si
st
an
ce
If the condition is within the range shown in the table below,
it is normal.
1) Turn starting switch
OFF.
2) Disconnect connec-
tor.
Fuel shut-off
valve
FSO+•
FSO-
M
e
as
ur
em
en
t
of
r
es
ist
anc
e
If the condition is within the range shown in the table below,
it is normal.
1) Turn starting switch
OFF.
2) Disconnect connec-
tor.
Fuel rail actuator RAIL
M
eas
ur
em
e
nt
of
re
si
st
an
ce
If the condition is within the range shown in the table below,
it is normal.
1) Turn starting switch
OFF.
2) Disconnect connec-
tor.
Timing rail
actuator
TIMG
M
ea
sur
em
e
nt
of
re
si
st
an
ce
If the condition is within the range shown in the table below,
it is normal.
1) Turn starting switch
OFF.
2) Disconnect connec-
tor.
Pin Fuel pressure Voltage
Between (A) – (B) — 4.75 – 5.25 V
Between (C) – (B)
103 kPa
{10.5 kg/cm
2
}
0.5 ± 0.04 V
1,722 kPa
{17.56 kg/cm
2
}
4.5 ± 0.06 V
Pin Fuel pressure Voltage
Between (A) – (B) — 4.75 – 5.25 V
Between (C) – (B)
0 kPa
{0 kg/cm
2
}
0.5 ± 0.04 V
2,582 kPa
{26.33 kg/cm
2
}
4.5 ± 0.06 V
Pin Resistance
Between (A) – (C) 7 – 9
Ω
Between (A), (C) – ground Min. 1 M
Ω
Pin Resistance
Between FSO+ – FSO- 23 – 40
Ω
Between FSO+, FSO- – ground Min. 1 M
Ω
Pin Resistance
Between (A) – (C) 7 – 9
Ω
Between (A), (C) – ground Min. 1 M
Ω
Pin Resistance
Between (A) – (C) 7 – 9
Ω
Between (A), (C) – ground Min. 1 M
Ω
(10)
STANDARD VALUE TABLE FOR ELECTRICAL PARTS
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