• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

Search results

  1. G

    D4H coolant temperature sender

    Thanks Nige. I am not getting readings anywhere near these from either sending unit. Starting to suspect my MMeter or something else.
  2. G

    D4H coolant temperature sender

    Hey guys, Cat D4H 9GJ00398. I am trying to test my coolant temp sender p/n 6N5926. I have the old one (suspected bad) and a new one just received. Neither one is giving ohms readings that make any sense in either a cold or hot water test. Does anyone have info on the test procedure and...
  3. G

    D4H Oil Pressure Switches

    Yep, found them tucked in to the right of the oil filter. Thanks again!!!
  4. G

    D4H Oil Pressure Switches

    Perfect. I'll go tale a look. Thanks guys!
  5. G

    D4H Oil Pressure Switches

    No gauge. Just an EMS dummy light. Which side of the block?
  6. G

    D4H Oil Pressure Switches

    Thanks. Where is this on the block?
  7. G

    D4H Oil Pressure Switches

    Hello everyone, On my D4H sn 9GJ00398, I am troubleshooting a low pressure alarm. Does anyone know where the oil pressure switches are located? I want to test the sending switches. I was told there are 2 located behind the starter on the right side of the block. I want to confirm that...
  8. G

    D4H charging problem

    Good to know. I'll go through the wiring diagram from Nige and do some voltage testing. Both batteries test good using our battery load tester. One is definitely not holding a charge for long though so it may be on its way out.
  9. G

    D4H charging problem

    Go Got it! Thanks so much. Lots more connections test.
  10. G

    D4H charging problem

    So with a 12V charger it sounds like I need to disconnect the leads to the dozer and charge them individually...?
  11. G

    D4H charging problem

    Sorry, I meant to do that in the beginning but forgot. The S/N is 9Gj00398. I don't know much about the history of the machine so anything is possible. I just got the machine home and am starting to go through it noticing the battery charging issue and also starting to troubleshoot the...
  12. G

    D4H charging problem

    Great! Any idea where the "main positive and negative" point would be on this unit? The batteries are in separate compartments so I would like to locate where they interconnect to make it so the batteries are in series.
  13. G

    D4H charging problem

    Ok. Then I'll check for 24v at alternator (engine off) and 26v at alternator (engine running). If the batteries are connected in the dozer correctly, should I see 12v or 24v at each battery?
  14. G

    D4H charging problem

    Hey guys, I have a new to me '92 D4H III LGP. Trying to find out why, at idle, I am getting a good 14.5 volts to the right side battery but only 11-12 volts to the left battery. Any suggestions for troubleshooting? Are these units a 24v system to the starter or just 12v with double the...
    • gdutson
    • Thread
    • d4h alternator
    • Replies: 16
    • Forum: Dozers
  15. G

    TB 235 Thumb quit working

    Hey guys, need help troubleshooting a 2014 TB 235. The hyd thumb quit working today. Started getting sticky and then locked in the down position. I could bring it back up with the bucket curl but it would just stay clamped to the bucket when I open the curl. I shut the machine down, came back...
Top