Hello All Engineer,

i need advice for the trouble that i got for repairing STILL Komatsu:

Type:FB 12 RJX-1
S/N:61187400704
Years:2004

the trouble is:

1.Unit Show errror FE 06,08,99

and i try to change part for error above is:
1.LAS MODULE
2.Accelator assy
3.travel Sender.

and after i change that parts above.the unit show new error:
FE 98,FE42,FE 16,FE 12

this is more make me complicated.anyone of you gentlement can give some advice for fix this problem?