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  1. 007

    Bobcat X331 compact Excavator electrical issue!

    Its a little confusing the way you are describing it but it sounds like you are measuring across the terminals of your ign switch. You cannot do that as you will appear to get a ground when measuring like that. All of your measurements must be made with respect to some good ground point in the...
  2. 007

    Bobcat X331 compact Excavator electrical issue!

    The information you have posted is a huge clue as to what the problem is. Your tests of the ignition switch are with respect to what?? Where are you placing the negative lead of your meter. What you are reading is not possible with out some huge earthing issues. To read three high and three low...
  3. 007

    302.7d solenoid problem

    There is a lot of reasons the coil will fail and it is usually heat which causes the coil to swell and expand and often breaks the coil wire some where internally causing an open circuit or short. If the slightest spec of debris gets caught between the internal plunger and the S/S sleeve can...
  4. 007

    Komatsu PC210LC-6K alternator wiring harness resistor

    Yes i think you are correct. Is very confusing when you have more than one diagram. I am not sure i agree with your starter lockout description, but from the second diagram it seems clear they are just forcing the alternator to excite using the two resistors 195 ohm. Which is fairly heavy start...
  5. 007

    Komatsu PC210LC-6K alternator wiring harness resistor

    I do not think the resisters you reffer to have any thing to do with alt. It is a 55amp ALt so should have pushed out more than 28amps? If you pull the alt to pieces i can help with tests but no need since you have new one coming. Yes specs say alt is fully insulated so you need to earth the...
  6. 007

    Komatsu PC210LC-6K alternator wiring harness resistor

    I am assuming is 24V system. I cannot see a resister in the circuit you provided so how are you determining there is one? Typically the alternator is excited by a charging light globe or a fixed resister. The globes were typically 2watt and have approx 0.083Amps flowing to excite the alternator...
  7. 007

    Cat 305.5e not charging

    Yeah if the specs you have are listing those terminals in order then its blank N/C then ignition then Light terminal. I have seen it many times where they excite themself s so your old one was one of them? The reasons this is so would fill a couple of pages so not worth getting into just take it...
  8. 007

    Cat 305.5e not charging

    Thats very interesting problem you have there. The diagram was not very helpful but did answer a few questions. The one wire you have there should have 12V on it when the ignition is turned on. Your old alternator is so covered in dirt that often the brushes get stuck in the holder which will...
  9. 007

    Cat 305.5e not charging

    The picture does not show the detail i wanted. Not having the wiring diagram for your machine i am only guessing at this point. I notice you have not mentioned the alternator warning light, is it coming on and going out when started? There are generally two types of systems used these days and...
  10. 007

    Cat 305.5e not charging

    It is extremely unwise to disconnect battery on any machine while still running. Yes the voltage should be higher. Be aware that the voltage should be checked in both places during your testing. Even though the machine charges at idle you should bump the rpm up a little for testing. Drill test...
  11. 007

    Cat 305.5e not charging

    Please explain how you are testing for charging. Are you measuring the output voltage of the alternator at the alternator or the battery. What voltages are you reading. What are the engine rpms when you are testing. What do you mean seems like not charging, did the battery go flat or starting...
  12. 007

    Boom Bottom Pin Just WON'T Take Grease - Tried These 6 Things Already

    There is better one. https://www.tooldesk.com/automotive/ATD5070-ATD-5070-Grease-Fitting-Unblocker-Zerk-Hammer.aspx https://www.tooldesk.com/automotive/LNI5805-Lincoln-Impact-Grease-Fitting-Cleaner.aspx
  13. 007

    Boom Bottom Pin Just WON'T Take Grease - Tried These 6 Things Already

    Some times the bush can spin and block off the grease hole which is a pain. You can try a grease impact driver. Here is a link to some one using one on YouTube but there are better quality ones to buy than the one shown in video. They work very well but i don't like the look of this one as the...
  14. 007

    120v Switch for 12/24v

    There is no problem using a 120V switch on 12/24V circuits. But to be a success you need to look at how much current is flowing and if it is and inductive load that might cause sparking across the contacts. Generally speaking high voltage switches like the ones in the picture above will have a...
  15. 007

    Newbie question - Bobcat E42 Compact (mini) Excavator, M1706 error

    I am not familiar with your machine but might help with some tips. You cannot test coils reliably with a multi meter as the inductance of the coil messes with the meters sample rate and you only get an approximate reading. The most reliable is to activate the coil and measure the current draw...
  16. 007

    (E55 Bobcat) New fan belt tore apart after 20 hours of use.....any ideas as to why?

    Can you post some pictures of belt and pulleys if possible.
  17. 007

    Isuzu stop solenoid wiring question

    You may struggle to get temperature sensor parameters as is usually something propriety but some workshop manuals sometimes give basic test values. Some times you can get lucky as there are a limited number of sensors to choose from which can withstand the harsh environment of an engine block...
  18. 007

    Isuzu stop solenoid wiring question

    Does any one know why Posts in a thread just disappear ?
  19. 007

    Cat 304cr starter fuse blowing

    Sorry ahart got mixed up, thought it was tm93 said what that fuse was feeding.
  20. 007

    Cat 304cr starter fuse blowing

    The schematic vaguely shows a starter relay on the starter solenoid but why are you so convinced the starter circuit has any thing to do with this. Its it because the fuse is labeled starter? If the starter circuit was the problem the fuse would blow when the keyswitch was turned to the cranking...
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