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My Champion 720A grader won't shift into gear, and the digital display stays blank. The problem gets worse after heavy rain. Could the electronic shifter module be faulty, and where can I find a replacement?

My Komatsu HA270 articulating dump truck was working fine, but after backing up and dumping a load, the steering became very stiff, and the dump function stopped working. What should I check first for this Komatsu HA270 hydraulic problem?

After replacing hydraulic hoses on my 2004 JCB 214 backhoe, the boom will raise but won't lower. The bucket functions normally, and I already bled the boom cylinder. Could trapped air, a blocked hose, or a control valve issue be causing this JCB boom problem?

I have a 1987 Champion 740 grader that seems to be stuck in the high range. The controller shows 1st gear, but 1st is much too fast. It shifts through the gears normally. Is there a high and low range that could be causing this issue?

I broke the transmission connector on the back of my CAT D5M FTC. I have a repair plug (4W4293), but soldering 17 wires in such a small space looks difficult. What’s the best way to repair this CAT D5M transmission connector?

My CAT machine sometimes won’t crank or start, but after sitting for a couple of days, it starts normally. The battery, wiring, fuses, and relays check out, while the diagnostic shows a camshaft sensor abnormality. Could the ECM, starter circuit, or another component be causing this intermittent...

My Genie GTH-844 cranks but won't start. I have fuel at the front two injection pumps, but nothing at the rear two. Could the EMR-2 governor or fuel pump be causing the problem?

My Cat 299D2 loses about 30% of its track speed when the engine and hydraulic oil get hot. What could cause the track speed to drop?

I'm looking at a Komatsu D31P-18 with about 2,827 hours. What are the common problems or key areas I should check before buying?

My 1982 John Deere 772A has steering, but none of the other hydraulics work. The pump may have air in it. How can I bleed the hydraulic lines?

I bought a used Volvo EC20B XTV, but the track width won't change. The engine loads up when I use the controls, but the blade and tracks don't move. Could this be an electrical, hydraulic, or undercarriage problem?

I'm working on a Volvo A35E articulated dump truck. The rear brake pressure gauge keeps moving into the red instead of staying in the green. Could the pressure sensor or wiring be the problem?

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

I'm finally working on an older motor grader that has been sitting for years. I freed up the engine and want to get it running again. What should I check first before trying to start it?

I'm installing an IMT crane and outriggers on a truck. Any simple ideas for mounting the bumper and setting up the hydraulic controls?

Our Bobcat 751 display started flashing, then the machine shut down. After sitting, it starts again but shuts down sooner each time. The display was replaced a few years ago. Has anyone had this problem?

My Cat 215 has suddenly stopped steering. The machine runs, but I can't turn it left or right. Has anyone had this issue before? What should I check first?

My John Deere 770A motor grader has a blade that keeps drifting down. I rebuilt the lift cylinder and found a bad spool valve. After swapping the valve to the other side, the drifting moved too, so I'm sure the spool valve is the problem. Does anyone know where I can find a replacement spool...

My **Komatsu PC150LC-6K excavator** only clicks when I turn the key on-no monitor or machine power. I replaced the battery solenoid, but the issue remains. Using a jumper wire powers it up, but the engine won't shut off until I remove the jumper. Has anyone had this issue or know what could be...

My 1992 Case 1845C has an intermittent starting problem. It often just clicks when I turn the key, even after replacing the starter, battery, ignition switch, cables, and wiring. It may start fine a few times, then the problem returns. Has anyone found the cause of this issue?