• 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. John C.

    HM400 Box Control

    I got a call this morning from a friend troubled about a scary occurrence on his HM400-1 articulated haul truck. It seems a couple of weeks ago his operator was on a haul when the box started going up on its own. People saw it going up and through a lot of wild gestures and such, got the...
  2. John C.

    Starter

    I had to change are starter in a big wheel loader. Owner got a new after market starter and was told it would plug in no problems. I'm glad he brought the old one back. Can you see why it wouldn't "just" plug in?
  3. John C.

    Powerscreen Belt Problem

    Got a call on Friday concerning a Powerscreen Chiefton 1400. The two side belts are apparently powered together and are surging. The caller has checked all the stuff on the belts themselves; load on each, clean drive and tail wheels, tracking and so on. Asked me about the hydraulics. I tried...
  4. John C.

    Bolts

    Sometime ago there was a topic talking about bolt markings and strength and such. I ran across this YouTube channel awhile back and saw this. It will answer any questions about the markings mean and how they measure out as far and strength and hardness go.
  5. John C.

    Hitachi ZX Dash 6 Monitor Panel

    Work slowed down so I can get to doing some video projects again. I shot this on an iPhone because YouTube tells me that most of my projects get views on phones. My strategy when I set all this up was to be that quick reference for someone getting thrown into the troubleshooting and repairs...
  6. John C.

    Tamrock and 3116 Cat Won't Start

    Got a call today about this drill that I got running about a year ago. They ran it last week and shut it down and it would turn over and not restart. I went up there for a look see. There was no smoke while the engine was turning over. Sediment bowl in the water separator was clean and I had...
  7. John C.

    Cat Tax Scam

    I got this in a news feed today and thought many of you might think it interesting. It is very vague as to what Caterpillar was being charged with and why the IRS went after the corporation...
  8. John C.

    Seal Direction

    I got called failure analysis on a vibrating grisly on a Power Screen crushing and screening plant. The eccentric shaft was just rebuilt and put back together and had less than fifty hours of run time. It started running slower and slower. Client removed the hydraulic drive motor and tried to...
  9. John C.

    Alaska Logging

    My client in Yakutat is looking for a heavy equipment mechanic for less than a month of work. The scenery is beautiful, fishing is always good and they will pay expenses. If interested PM me your contact information. John C.
  10. John C.

    Komatsu PC600-8 No Boost Pressure

    Engine in the machine is the Komatsu SA6D140. It has a common rail fuel system. No DPF or pollution stuff and no waste gate on the turbo. Fuel cooled ECM mounted on the side of the engine. No electrical codes and only old mechanical codes. Fuel filters have been replaces and all connections...
  11. John C.

    Seller & Ebay Warning

    I have a client that has been burned by an internet scam and he has given me permission to spread the work on this scam. Yunick Motorsports, LLC is a criminal operation that purports to sell high horsepower racing and diesel engines on the internet. The fraud involves advertising on Ebay...
  12. John C.

    Truck & Trailer Frame Work

    I got a call today from a friend asking about places who could provide an estimate of repair for frame straightening on a 60 ton lowboy. We are looking for someone in the Seattle or Northwestern US. I've been around too long when all the people and places that I used in the past are gone now...
  13. John C.

    Cat 3406 5EK Serial #31649

    Looking for to see if this is a good number. There is a spot in the block that has a slight grind mark and the digits appear to be marked by a center punch. No tag anywhere other than on the aftermarket turbo. I went to look at this engine today for a customer. I what I think were part numbers...
  14. John C.

    Automation

    The west coast longshoremen contract is coming up and guess the most important question in the negotiations. https://mynorthwest.com/3465241/port-seattle-labor-west-coast-dockworker-contract-talks/
  15. John C.

    D6T Torque Converter Problem

    Long story so have a cup of coffee and some time. I don't fully understand what is going on with this problem and would welcome any input. I've got a customer with this machine Sn. JML0036. They changed the engine while leaving the torque converter hanging in the machine. They put the...
  16. John C.

    Cat Engine Blink Codes

    Got a call from a client on Friday about another crusher with electrical problems. It's a 2002 Pegson jaw crusher with a Cat C9 engine. Was running fine when shut down. Sat a week or so and when they went to start it nothing happened. They got a blink code on the engine monitor of 37. Three...
  17. John C.

    Hitachi ZX-3 Monitor Panel Diagnostics

    Here is a short program showing how to access the diagnostics on most any ZX Dash3 Hitachi. It was done on a iPhone and I haven't put in any narration. Machine has key on and engine not running. The troubleshooting menu shows no codes so I went to the monitoring menu. There is a whole lot of...
  18. John C.

    A40F Transmission Level Check

    Must be truck week for me. Looked at one of these today and could not find the transmission oil level check. Looked for a sight gauge and a dip stick or anything and nothing to be seen. There was an item in the menu for the tranny level check but it apparently didn't work. I see there is also...
  19. John C.

    Frozen Cat Starters

    Client called me today asking if I seen a Cat engine starter freeze. It won’t turn at all. He pulls it out takes the back cover loose and it frees up. Turns easy now. Checks it with free spin on jumper and it’s OK. Puts it back in and it’s fine. Two or three days later it happens again. He had...
  20. John C.

    Electrical Harness Video

    There are a couple of threads going about electrical problems and fixes. I've started a new thread for this. I finished another video today which is about electrical wiring harnesses. It's beginner stuff but some of you might find it a bit interesting. It's just over five minutes long and I got...
Top