Symptom And Troubleshooting Numbers - Komatsu PC88MR-10 Shop Manual

Symptom and troubleshooting numbers

Problem and troubleshooting number
No.
Action level is displayed on machine monitor. If function key [F5] is pressed,
1
occurring failures list is displayed.
2 The failure code is displayed on the mechanical system abnormality record screen
3 The failure code is displayed on the electrical system abnormality record screen
No.
4 Starting performance is poor.
5 Engine does not start
6 When starting switch is turned to "START" position, engine is not rotated
7 Engine is cranked but exhaust gas does not come out
8 Fuel is injected but engine does not start
9 Engine does not pick up smoothly
10 Engine stops during operation
11 Engine runs rough or is unstable
12 Engine lacks power
13 Exhaust gas color is black
14 Oil consumption is increased.
15 Oil becomes contaminated quickly.
16 Fuel consumption is excessive
17 Oil is in coolant (or coolant spurts back or coolant level goes down)
18 Oil pressure drops
19 Fuel in oil
20 Oil is mixed with water (milkiness)
21 Coolant temperature rises too high (overheating)
22 Unusual noise is heard
23 Vibration is excessive
24 Manual preheater does not operate.
25 While preheater is operating, preheating monitor does not light up.
26 Automatic warm-up system does not work (in cold weather).
When auto-decelerator switch is operated, auto-decelerator monitor does not light
27
up or does not go off.
28 Auto-decelerator is not operated or canceled with lever.
29 Any of work equipment, swing, and travel does not work.
30 All of work equipment, swing, and travel mechanism do not lock.
31 Speed or power of all work equipment, swing and travel is low.
32 Engine speed lowers extremely or engine stalls.
When working mode switch is operated, working mode selection screen is not
33
displayed.
When working mode is changed, setting of engine and hydraulic pump is not
34
changed.
35 Abnormal sound comes out from around hydraulic pump
36 Fine control performance or response is low
37 Speed or power of boom is low.
38 Speed or power of arm is low.
PC88MR-10
Problem
Action level, failure code
Problem
Phenomena related to engine
Symptom related to work equipment, swing and travel
Problems related to work equipment
40 Troubleshooting
Related information on troubleshooting
(PC88MR-5540-441-A-00-A)
Troubleshooting
Index
Take actions by
following the
failure code.
Troubleshooting
Index
S-4
E-1, S-1
S-1, E-1
S-2
S-3
S-5
S-6, H-2
S-7
S-8
S-9
S-10
S-11
S-12
S-13
S-14
S-15
S-16
S-17
S-18
S-19
E-2
E-3
E-21
E-22
E-23
E-31, H-3
E-32
H-1
H-2, S-6
E-24
E-25
H-4
H-5
H-6
H-7
40-39