1. 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!
  2. ALL NEW MEMBERS READ THIS FIRST!! Thank you for joining Heavy Equipment Forums! If you are new to forums we communicate with "Threads", please search our threads to see if your topic may have already been answered and if not then click "Post New Thread" in the appropriate forum. This will allow all of our members to see your question and give you the best chance to be answered. After you've made a number of posts you will graduate to Full Member status where you'll see a few more privileges. Following these guidelines will help make this the best resource for heavy equipment on the net. Thanks for joining us and I hope you enjoy your stay!!

279C2 Won't Start

Discussion in 'Compact Track/Multi Terrain Loaders' started by Danny L. Thomas, Aug 24, 2019.

  1. Danny L. Thomas

    Danny L. Thomas Well-Known Member

    Joined:
    Apr 9, 2019
    Messages:
    49
    Location:
    Texas
    279C2 KWB00715. I've been clearing mesquite in one of my pastures and last used the loader a week ago. Started and ran fine, parked it until I needed it this morning. Cranked the engine and it usually starts after turning over two or three times. It acts like it's not getting any fuel. It did this once before and I noticed some water in the separator bowl on the bottom of the fuel filter. I drained it, reprimed the bowl and it started right up. Today, I drained the bowl but went ahead and pulled it off and gave it a good cleaning. Reinstalled it and let the electric fuel pump prime the system till the bowl was full of clean fuel. Tried to start it and same thing. When turning over, it will sometimes blow white smoke from the exhaust and sometimes it blows nothing. Caterpillar dealer service is closed on Saturday so I can't get ahold of them til Monday. Any ideas what's up with this thing? I really need to get some raking done and would rather not pay Cat to come out and do something I might be able to find out on here. Really don't have an extra thousand for service right now. Any ideas would be appreciated.
     
  2. Danny L. Thomas

    Danny L. Thomas Well-Known Member

    Joined:
    Apr 9, 2019
    Messages:
    49
    Location:
    Texas
    Forgot to mention that on the 267 I owned before the 279, the fuel solenoid went bad and I had to replace it. The machine acted a lot like this one is but I haven't checked the solenoid or fuse to the solenoid yet. I will get back to it when it's a little cooler. Any other thoughts?
     
  3. Danny L. Thomas

    Danny L. Thomas Well-Known Member

    Joined:
    Apr 9, 2019
    Messages:
    49
    Location:
    Texas
    Never mind. I got it.
     
  4. DIYDAVE

    DIYDAVE Senior Member

    Joined:
    Feb 18, 2007
    Messages:
    2,203
    Location:
    MD
    Well, don't keep us in suspense, what was it?;)
     
  5. Danny L. Thomas

    Danny L. Thomas Well-Known Member

    Joined:
    Apr 9, 2019
    Messages:
    49
    Location:
    Texas
    I checked the fuse which was good and feared the worst. I noticed one of the bank of relays stuck out a little farther than the rest. I checked the schematic and it was the fuel stop relay. I moved it from side to side and pushed it in to make sure it was seated correctly. I hit the key, turned over once and started. Cheap fixes don't happen often for me, I was thrilled.
     
  6. Nige

    Nige Senior Member

    Joined:
    Jun 22, 2011
    Messages:
    21,149
    Location:
    G..G..G..Granville.........!! Fetch your cloth.
    So the schematic saved your bacon again.? How many times is that now.? :):)
    Did you happen to pull the relay and look at the condition/cleanliness of the contacts in the relay panel.?
     
  7. Danny L. Thomas

    Danny L. Thomas Well-Known Member

    Joined:
    Apr 9, 2019
    Messages:
    49
    Location:
    Texas
    I did not. When it started up, I went ahead and did some work to charge the battery back up. If it ever falters again, I know where to start. This is the first electrical problem I have had with the 279C2. The schematic you sent me for my 304C CR helped and I appreciate you ending it to me.
     
  8. Nige

    Nige Senior Member

    Joined:
    Jun 22, 2011
    Messages:
    21,149
    Location:
    G..G..G..Granville.........!! Fetch your cloth.
    Sorry, I was getting confused between the two machines. If you want a schematic for the 279C just drop me a PM with your email address. I've got the S/No from your OP.
     
  9. Danny L. Thomas

    Danny L. Thomas Well-Known Member

    Joined:
    Apr 9, 2019
    Messages:
    49
    Location:
    Texas
    Well, the machine wouldn't start this morning. Doing the same thing it did before so I started checking fuses, relays and the like as before but no joy. Still trying to figure out what's causing this. It started and ran fine Saturday morning. I parked it when done and this morning it wouldn't start. It just acts like it's not getting any fuel. I came to grab a multimeter and am going back now to make sure the solenoid is energized when the key is on. Trying to find an alternative to the Caterpillar part which is priced at $300. I found an aftermarket part for my old 267 but so far nothing any cheaper for the 279C2.
     
  10. thepumpguysc

    thepumpguysc Senior Member

    Joined:
    Mar 18, 2010
    Messages:
    6,324
    Occupation:
    Master Inj.Pump rebuilder
    Location:
    Sunny South Carolina
    What kinda inj. pump is it.?? Mechanical Bosch pump or an heui..
    If its just a Bosch VE pump, those solenoids can be found CHEAP if u know what your looking for.
     
  11. still learn'n

    still learn'n Senior Member

    Joined:
    Feb 6, 2012
    Messages:
    454
    Location:
    Kansas
    We have changed electric fuel pump several times on our 299D. I don't know if your machine would be the same or not.
     
  12. thepumpguysc

    thepumpguysc Senior Member

    Joined:
    Mar 18, 2010
    Messages:
    6,324
    Occupation:
    Master Inj.Pump rebuilder
    Location:
    Sunny South Carolina
    Yes, def. check the electr. pump fuel output..
    IF your inj. pump IS a VE.. the output pressure should be no more than 10psi..
    & not less than 5 psi..
     
  13. Danny L. Thomas

    Danny L. Thomas Well-Known Member

    Joined:
    Apr 9, 2019
    Messages:
    49
    Location:
    Texas
    I'm not sure what brand the pump is. I went back and checked the circuit and am getting the correct voltage to the solenoid. I even jumpered it and could hear and feel the solenoid click. This helps me rule out relays and fuses. I had drained the sediment bowl on the seperator and the pump pressured it back up with clean fuel so I am assuming it is okay. I'll go back to work on it this morning. I may pull the solenoid and make sure the plunger is operating correctly. I got tired and frustrated yesterday so I just gave up and went hog hunting.
     
  14. thepumpguysc

    thepumpguysc Senior Member

    Joined:
    Mar 18, 2010
    Messages:
    6,324
    Occupation:
    Master Inj.Pump rebuilder
    Location:
    Sunny South Carolina
    Theres no sense in taking it out.. if u hear it.. its working..
    Kill'n stuff makes me feel better too..
    ..& folks ask me why all these houses on my street are "for sale".??
    I just tell'm, "the owner died suddenly"..Lol
     
  15. thepumpguysc

    thepumpguysc Senior Member

    Joined:
    Mar 18, 2010
    Messages:
    6,324
    Occupation:
    Master Inj.Pump rebuilder
    Location:
    Sunny South Carolina
    On that Bosch VE pump.. there might be an emergency MANUAL STOP LEVER on the side of the pump.??
    THIS is gonna take 2 people to do this next "trick"..
    Loosen ALL the steel lines AT THE INJECTORS.. or as many u can get to.. the more the merrier ..
    While someone cranks the engine.. pull back on that lever slowly... do THAT a couple of times.. & watch the loosened lines at the injectors & hope that theres fuel squirting out..
    This is just for/if its a bosch ve pump.. good luck.
     
  16. Danny L. Thomas

    Danny L. Thomas Well-Known Member

    Joined:
    Apr 9, 2019
    Messages:
    49
    Location:
    Texas
    The pump is Zexel. Guess I'll be calling the Cat dealer.
     
  17. thepumpguysc

    thepumpguysc Senior Member

    Joined:
    Mar 18, 2010
    Messages:
    6,324
    Occupation:
    Master Inj.Pump rebuilder
    Location:
    Sunny South Carolina
    NO.. Zexel bought the license FROM BOSCH.. its the same difference..
    Is it an inline pump or rotary pump.. Take a friggin picture..
    An inline pump has the steel lines from the pump TO the injectors in a straight line coming off the TOP of
    the pump..
    A rotary has them coming off THE BACK of the pump in a circle..
     
  18. Danny L. Thomas

    Danny L. Thomas Well-Known Member

    Joined:
    Apr 9, 2019
    Messages:
    49
    Location:
    Texas
    I'm heading back over to the pasture, I'll get a picture. It is going to be the inline I think, IIRC the injector lines come off the top.
     
  19. thepumpguysc

    thepumpguysc Senior Member

    Joined:
    Mar 18, 2010
    Messages:
    6,324
    Occupation:
    Master Inj.Pump rebuilder
    Location:
    Sunny South Carolina
    See if it has a removable side cover too.. 2- 10mm bolts
    If u get that pic posted, I can walk u thru the diagnostics..
     
  20. thepumpguysc

    thepumpguysc Senior Member

    Joined:
    Mar 18, 2010
    Messages:
    6,324
    Occupation:
    Master Inj.Pump rebuilder
    Location:
    Sunny South Carolina
    I gotta hang Halloween lites so I'll be in & out..