Komatsu PC130-7, Shop Manual, Page: 104 / 342

20-214
PC130-7
TROUBLESHOOTING CLASSIFICATION OF AND PROCEDURES FOR TROUBLESHOOTING
(1)
Phenomena looking like troubles and troubleshooting Nos.
No. Phenomenon looking like trouble
Troubleshooting
Code
display
E-mode H-mode S-mode
Phenomena related to user code or error code
1 User codes are displayed on monitor panel Accord-
ing to dis-
played
code
2 If error code display function is checked, error codes are displayed
Phenomena related to engine
3 Engine does not start easily (It always takes time to start) S-1
4
Engine does not start
Engine does not crank E-1 S-2 a)
5
Engine cranks but exhaust smoke
does not come out
(Fuel is not injected)
S-2 b)
6
Exhaust smoke comes out but engine
does not start (Fuel is injected)
S-2 c)
7 Engine speed does not rise sharply (Follow-up performance is low) S-3
8 Engine stops during operation E-2 S-4
9 Engine rotation is abnormal (Engine hunts) E-3 S-5
10 Output is insufficient (Power is low) S-6
11 Exhaust gas color is bad (Incomplete combustion) S-7
12 Oil is consumed much (or exhaust gas color is bad) S-8
13 Oil becomes dirty quickly S-9
14 Fuel is consumed much S-10
15 Coolant contains oil (or it blows back or reduces) S-11
16 Engine oil pressure caution lamp lights up (Oil pressure lowers) S-12
17 Oil level rises (Water or fuel is mixed in oil) S-13
18 Water temperature rises too high (Overheating) S-14
19 Abnormal sound comes out S-15
20 Vibration is excessive S-16
21 Engine does not stop E-4
22 Auto-decelerator does not operate E-5 H-5
23 Automatic warm-up system does not operate E-6
24 Preheater does not operate E-7
Phenomena related to work equipment, swing, and travel
25 Speed or power of whole work equipment, travel, and swing is low H-1 S-6
26 Engine speed lowers extremely or engine stalls H-2 S-4
27 Work equipment, travel, and swing systems do not work E-8 H-3
28 Abnormal sound comes out from around hydraulic pump H-4
29 Fine control performance or response is low H-6