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Komatsu HM-300-2 Articulated Truck with codes

KCornish

New Member
Joined
Apr 21, 2014
Messages
1
Location
Peterborough
Hello, Have a Komatsu articulated dump truck. Have a code coming up A003. WOuld anyone know what this is for? Thank you!
 

coalrulz

Senior Member
Joined
May 10, 2009
Messages
285
Location
Western US
KCORNISH,

Most of the Komatsu fault codes are 6 digits in length. There are general action codes, E01,E02,E03 that are three digits in length but general action codes just give operator directions as to the severity of fault and whether or not the operator needs to shut the machine down or not.

On the dash2 HM300's you have to toggle the > switch to see actual fault code which is different from the general action code.
 

joepro

New Member
Joined
Apr 8, 2023
Messages
1
Location
Thunder bay ON
KCORNISH,

Most of the Komatsu fault codes are 6 digits in length. There are general action codes, E01,E02,E03 that are three digits in length but general action codes just give operator directions as to the severity of fault and whether or not the operator needs to shut the machine down or not.

On the dash2 HM300's you have to toggle the > switch to see actual fault code which is different from the general action code.
Good evening I have an E03 code on a wiggle wagon komatsu I'm trying to figure out what the issue is you refer to severity is E03 more or less severe? Do you have any ideas what cpuld trigger it I've done everything that's obvious fluid levels Fuses filters I'm not getting specifics anywhere
 

Tim1671

Member
Joined
Nov 26, 2019
Messages
6
Location
Oklahoma
Was wondering what would cause my power windows and emergency brake not to work on my komatsu HM300-2. I’ve change the fuses and have fire coming out of the window switches.
 

John C.

Senior Member
Joined
Jun 11, 2007
Messages
13,213
Location
Northwest
Occupation
Machinery & Equipment Appraiser
The window motors shorts out from dirt and water. The trucks have parking brakes and service brakes. It also might have a retarder. I think you will probably need a service manual to troubleshoot that stuff.
 
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