Hi guys Does any one had this code before? Electrical system low voltage?
Serial Number please. Is it a Logged Code or an Active Code..? As a Logged Code I've seen it many times before on a variety of Cat equipment.
Sn RHN02687
So we’re half way there. Is the Code Active or Logged?
Active Sorry
Active
Attached the Troubleshooting Procedure.
Thanks Nige Im away from the machine i suspected a wire harness this confirms me. Now the loader it wont start The transfer fuel pump isnt working i wanna think that is a wire harness next my next question is if the alternator fails the loader it wornt start?
Have you checked the voltage at the batteries..? If the alternator fails and you continue to operate the machine eventually the batteries will discharge and nothing will work.
The batteries have planty power This is what happen After a regular day of work the followed morning just didn't fired up. Some o e else replaced the fuel filters still nothing... So i took over and find out the the transfer fuel pump wasn't working cause the fuel filter with the water separator was empty... so i replaced the fuel pump Check the codes and find the 168 [4] If the alternator fails will this keep it from firing up?
What is "Plenty power" regarding the batteries. How many volts do they show..? It makes no sense to me for a 168-04 Code for low voltage (measured less than 18V on a 24v system) to exist and the batteries are allegedly good. You can'yt have both at the same time. An alternator failure should not prevent the engine from firing up provided the batteries have sufficient power - see above. Please Note: The fuel transfer pump on this engine is electric. Low battery voltage and, guess what, it won't work........... Check the battery voltage with a digital multimeter, then have someone try to crank the starter and see what the voltage does. Report what you find.
Ok The problem was It ran out fuel Some one else got there first and try to fix it(made it worse) cause when i got there i didn't had any info of what he did to it so.. i hate it cause i cant do my own diagnoses anyway So i find this code 168 but at the same time i look at the water separator on the filter and open the ignition switch and i notice the fuel pump wanst working... so this is when i test the pump and find out it wasnt working so i installed a new one (at this time i didnt know it run out of fuel) so i got this code 168 and at the same time i looked an article about this loaders if they're voltage drops or goes higher it can damage the fuel pump so i was this is it one of those... Replaced the fuel pump.. changerd the batteries and nothing.... so i decide to go and wigle all the wire harnesses nothing check the fuses relays.... and bingo the previus guy broke the relay one of the legs i guess he removed or something couse i pulled and saw that they were exactly the same #s so i pull an other one to my surprise it had more legs or pins then i compared the. Side to side and find out that the one for the fuel was broken... This is why i hate to take over jobs like this cause its more difficult to find the problem... Once again Thank you Nige
Nobody likes to go in after someone else has akready been there, especially if there is no good information about what they did. I think that deal with the relay would have foxed most mechanics at least for a while. Well done on getting it sorted.
That's why I often ask what has been done recently and how long has this problem been going on. You don't always get the full story until you spend hours looking in the wrong place but once in a while you can cut out much of the work. Mention of this one being run out of fuel reminded me of a problem one of the guys in the shop had years ago. Drove old Mack, B-81 I believe, into shop for service. While cleaning the air filter housing he stuffed a rag in the pipe to the intake. After he was finished with the service went to start truck and no start. He then remembered the rag. Sure enough it was sucked into the engine! Pulled intake manifold off and managed to get all the rag pieces pulled out of the heads. Still would not start! After trying a bit more noticed no smoke out of the exhaust while cranking. Long story a bit shortened, seems the truck had run out of fuel just as it was shut down for the air filter service. Primed fuel system and ran OK!