Komatsu PC88MR-10 Shop Manual page 682

40 Troubleshooting
Troubleshooting by failure code (Display of code)
Check result of cylinder cutout mode operation (engine speed)
Cutout
Function
cylinder
No. 1
cylinder
5
No. 2
Set
cylinder
cylinder to
be cut out
No. 3
by cylinder.
cylinder
No. 4
cylinder
C. Check of fuel circuit
pressure
Fuel pressure in low-
6
pressure circuit
D. Check of strainers and filters
7 Visual check of fuel filter
E. Check of leakage and
return rate
Leakage from pressure
8
limiter
9 Return rate from injector
* Although upper limit is 20 cc/min, note that standard value is 0 cc/min (no leakage) in normal condition.
40-194
Testing conditions
Low idle
Low idle
Low idle
Low idle
Testing conditions
High idle or under load
equivalent to rated
operation (at arm in
relieved)
Testing conditions
Engine operation
equivalent to rated
operation (with load by
torque converter stall)
Arm in hydraulic relief
1,600 rpm
Arm in hydraulic relief
1,700 rpm
Arm in hydraulic relief
1,800 rpm
Arm in hydraulic relief
1,900 rpm
Arm in hydraulic relief
2,000 rpm
Standard value
(Reference
ISO unit
value)
-
r/min
-
r/min
-
r/min
-
r/min
Standard value
(Reference
Unit
value)
MPa 0.15 to 0.3
{kg/cm 2 } {1.5 to 3.0}
Standard value
(Reference
Unit
value)
Max. 20 (*)
cc/min
cc/min Max. 190
cc/min Max. 200
cc/min Max. 210
cc/min Max. 220
cc/min Max. 230
Measured
value
- -
- -
- -
- -
Measured
value
Measured
value
Speed:
Return
rate:
PC88MR-10