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  1. N

    D6D pulling problem

    Sounds like your steering clutch is probably shot.
  2. N

    Caterpillar d5g

    The codes you list don't make any sense. Probably a track speed sensor. I've changed dozens. The joysticks usually work or they don't. I doubt it's that. The pump and motor calibrations are usually always fine but the decelerator calibration does get out of whack on them over time. Biggest...
  3. N

    D6R track tensioner

    50w
  4. N

    Cat 320l stalling under load

    What are your pump pressures at low and high idle not moving any functions. Does each track work fine?
  5. N

    D6R track tensioner

    If you're just doing an adjuster reseal they're easy as can be and no need to mess with the recoil spring.
  6. N

    Cat 320l stalling under load

    Is the bucket slow in both directions? If you slowly move the bucket does the engine lug more than if you move the lever all the way?
  7. N

    Cat D6D won’t move

    Check trans pump pressure. Pull the floor plate and see if the driveshaft is intact and turning as well
  8. N

    2004 D5G LPG LACKS POWER

    Does it have an electric fuel pump on the water seperator? They're notorious for wearing out but still making noise, seeming like they're pumping. Also blow air through the suction line back to the tank.
  9. N

    2016 d5k2

    Def header is likely dead. There have been lots of problems with them. I don't remember if you can just replace it and move on or you need et to run the aftertreatment functional or verification test to clear the faults.
  10. N

    Caterpillar 416 weak boom lift

    Is it only the boom that's weak? What are the pressures on every function when stalled. Does stall pressure change between low and high idle?
  11. N

    320c hydraulic oil and engine coolant overheats simultaneously

    Set the engine rpm wide open, open the door in front of the cooling package and feel around the top, bottom and sides of the coolers for air recirculating. The older excavators are bad about the seal foam falling or rotting out and recirculating hot air
  12. N

    140m e560 trouble code

    The last one I worked on had the secondary steering motor around the hitch and you had to get to it from the bottom. It's basically a starter motor turning a small hyd pump. The relay is right down there too. Usually the steering control valve/module(little black box on the steering valve) would...
  13. N

    fuel problems on a cat D5N

    Any warning lights or faults? That's a heui engine and it could be lots of things. Heui pump not making correct actuation pressure, IAP, boost, atmospheric pressure or oil temp sensors giving a bad reading. You need someone with et to look at it or at least some sort of scanner that can read...
  14. N

    D5m Dozer Winch question

    That's kind of what free spool does. If I remember right it just releases the brake. Maybe there is more drag or stiction in the unwind clutch basket than the reel in side and the turning shaft imparts some torque to the drum. You could put the transmission in gear, to stall the converter and...
  15. N

    D6M Hot Hydraulics

    Bad resolvers usually result in weak hydraulics. Does it have a cooler? Neither the parts book or shematic show one. My money is on excessive case drain in the pump or a sticking swashplate or compensator valve keeping the pump upstroked and standby pressure too high. The 2nd makes the most...
  16. N

    D6R II LGP shifting hard

    Did you only do the engagement pressure calibration? The fill time calibration should be done after engagement pressures are calibrated and hoses removed. Full time is the one that sets the smooth/firm on shifts.
  17. N

    Cat 320B LL Forestry Swing Machine Hyd Lockout

    The hydraulic schematic shows one just like every other 300 series cat excavator I've ever seen.
  18. N

    Cat 320B LL Forestry Swing Machine Hyd Lockout

    You found a piece in the main relief valve and a piece in the return filter? Think about oil flow here. If it was a bearing race from something in a pump the shrapnel would be in the case drain filter. To get a piece into the main relief it would have to bypass the case drain filter, suction...
  19. N

    Cat 320B LL Forestry Swing Machine Hyd Lockout

    I wouldn't waste your time on the pulling the pump just to get at the drive coupling. If it's a bowex flange they work until they just don't and you'll have nothing. If it's the iron cross style which I believe it likely is, the plastic element can disentigrate and you'll get a noticeable...
  20. N

    john deere 490 final drive

    Could be case drain pressure from the motor but a leaking swivel can push drive loop oil into the case drain and pressurize it also. How many hours are on it?
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