Komatsu Galeo PC138US-8 Shop Manual page 569

SEN02464-01
Model
Machine serial No.
Engine
Engine serial No.
A. Visual check
1 Fuel leakage to outside
2 Clogging of fuel tank breather
B. Check with machine monitor (Fault history function, monitoring function, and reduced cylinder mode function)
3 Check of failure code
Check of monitoring information
Code Displayed item
*1 Engine speed
*2 Throttle opening degree
*3 Fuel injection command
Common rail pressure
4
*4
command
Common rail fuel
*5
pressure
Fuel injection timing
*6
command
*7 Boost pressure
Engine coolant
*8
temperature
*9 Fuel temperature
Check of reduced cylinder mode operation (Engine speed)
Reduced cylinder
Function
No. 1 cylinder
5
No. 2 cylinder
*10
No. 3 cylinder
No. 4 cylinder
C. Check of fuel circuit pressure
6 Fuel low-pressure circuit pressure High idle or rated load
D. Check of strainers and filters
7 Visual check of fuel filter
E.Check of leakage and return rate
8 Leakage through pressure limiter
9 Return rate from injector
18
Check sheet for no-pressure feed
#
#
Checking condition
Low idle
High idle
Equivalent to rating
Low idle
High idle
Equivalent to rating
Equivalent to rating
Equivalent to rating
Low idle
High idle
Equivalent to rating
Equivalent to rating
Low idle
Low idle
Checking condition
Low idle
Low idle
Low idle
Low idle
Checking condition
Checking condition
Equivalent to rating
Equivalent to rating 1,600 rpm
Equivalent to rating 1,700 rpm
Equivalent to rating 1,800 rpm
Equivalent to rating 1,900 rpm
Equivalent to rating 2,000 rpm
Work No.
Date of check
Service meter
Worker's name
/ / / /
Standard value
Unit
(Reference value)
rpm 1,100 ± 50
rpm 2,300 ± 60
rpm 2,200
% 0
% 100
mm 3 —
MPa
MPa
CA —
CA —
CA —
kPa —
°C —
°C —
Standard value
Unit
(Reference value)
rpm —
rpm —
rpm —
rpm —
Standard value
Unit
(Reference value)
MPa -49 – 0 kPa
2
{kg/cm } {-0.5 – 0 kg/cm
Standard value
Unit
(Reference value)
cc/min Max. 20 (*)
cc/min 190
cc/min 200
cc/min 210
cc/min 220
cc/min 230
40 Troubleshooting
/ /
h
Good NG
Good NG
Measured value Good NG
—
—
—
—
—
—
—
Measured value
Good NG
—
—
—
—
Measured value
Good NG
}
2
Good NG
Measured value
Good NG
Speed:
Return rate:
PC138US, USLC-8
—
—
—
—
—
—
—
—
—
—
—