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My 2018 John Deere 544K cooling fan only runs about 200-500 RPM. The solenoid has 26V and the hydraulic oil level is correct. What should I check?

I'm looking for Komatsu wheel loader service manuals, wiring diagrams, and testing information. Is there a Komatsu system that provides this information in one place?

My Weiler P385B sometimes shows this code when starting. Restarting clears it. I checked the battery, alternator, and grounds. Has anyone had this issue?

I’m working on a 2006 Komatsu PC120-6 with a hydraulic thumb that keeps stopping. I replaced both coils and ran a new wire, but now energizing the circuit makes all the wires show power. Has anyone dealt with this issue before?

I'm replacing the propel lever and need the calibration procedure for the new lever. I'd also like to calibrate the propel EDC because the machine doesn't track straight. Any tips or service manual instructions would be greatly appreciated.

I'm looking at a 2005 Volvo EC360B excavator with a D10 engine and around 12,000 hours that's coming up for auction. It looks clean for its age. Are there any common issues or key areas I should inspect before placing a bid?

My 1991 Versalift VST4000I is leaking hydraulic fluid from the bucket rotator that turns the basket left and right. Has anyone resealed one of these or replaced it before?

My dozer starts and idles but won't rev up, and the blade and tracks won't move. It was running fine until it suddenly idled down and stopped. Has anyone seen these fault codes before?

I'm looking for a replacement oil pressure sensor pigtail connector for my Case 440. The original connector has been spliced before, and there's very little wire left to work with. Does anyone know where I can buy the correct replacement connector or if there's a compatible aftermarket option?

I'm getting a 190-8 code since rebuilding my engine. I already replaced the sensor, but the code is still active. Has anyone run into this after an engine rebuild? I'm trying to figure out what else could be causing it. Any advice would be appreciated.

1997 Cat 345B hydraulic oil leaking into engine oil despite replacing the fan pump twice.

I'm having electrical issues with my JCB 214S. I'm trying to locate all the ground wires on the machine, and I'm also not getting power to the alternator excite wire with the key on. The fuses all check out fine.

I'm having an issue with my 2012 SkyTrak 8042 randomly dropping out of gear. It'll move a few feet, disengage, then re-engage after a few seconds. It seems to happen more when the machine is cold and at low RPM. Once it's warmed up, it runs fine. Has anyone dealt with this before or know what I...

For those who've sold equipment there, did your listings attract serious buyers and fast inquiries?

I'm troubleshooting a CAT 627E scraper where transmission oil is migrating into the differential housing. After draining the diff completely and refilling the transmission, oil immediately started flowing into the differential once the machine was started. Trying to figure out if this is...

I know this is probably a basic question, but I'm still pretty new to running our John Deere 700J and I'm trying to figure out where the starting aid button is located on a 2006 model.

I had the swing pinion shaft snap on my Komatsu PC200-7 and I'm trying to figure out what could have caused it. I replaced the oil seal and had to change the bearings because they were completely seized onto the shaft and would not press out easily.

After winning a machine, how smooth was the transport side for you?

I've been noticing how complete some equipment listings are. Do you rely on that information heavily, or do you still double-check everything?

I have been looking for some advice on my John Deere 410J TC. I recently blew a hydraulic hose (not a big deal), but now I'm stuck figuring out the correct hydraulic fluid. I stopped by a Deere dealer, and even though they weren't 100% sure, they gave me a few different options. The manual also...