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Hey folks,

I keep seeing motor graders at sites after excavation. I recently heard that the Caterpillar 140M sometimes starts drifting a little when used for long hours. I know the main function of motor graders is mainly for leveling and road prep, but does this issue really affect the work quality? Should I worry about this if I own one for small projects, or is renting a better option?

If not this model, then which model would you guys suggest for road leveling work? I was thinking about the Cat 140M, but this hydraulic drift issue is making me reconsider. Any recommendations based on real experience would really help!

jack thomes
Posted 7 months ago | 740 views

Main Category: Engines
Category: Graders

Replies (3)

john lavis 7 months ago

I’ve seen this issue come up a few times with the 140M, and hydraulic drift usually points to internal leakage in the control valves or worn cylinder seals. It’s worth checking the hydraulic oil condition and making sure there’s no contamination affecting valve performance. Regular calibration of the hydraulic system can also help reduce unexpected blade movement. Keeping your Cat motor grader well-maintained really makes a difference in preventing these drift problems.

usedmotorgrader 6 months ago

jack thomes 7 months ago

Hey folks, I keep seeing motor graders at sites after excavation. I recently heard that the Caterpillar 140M sometimes starts drifting a little when used for long hours. I know the main function of motor graders is mainly for leveling and road prep, but does this issue really affect the work quality...

The main function of a motor grader like the Caterpillar 140M Motor Grader is precision leveling, road preparation, and surface finishing. Hydraulic drift can sometimes occur after long operating hours, usually due to wear in hydraulic components, but proper maintenance typically prevents it from affecting performance. If you plan to buy a used motor grader, checking the hydraulic system, service history, and overall condition is very important to ensure reliable grading quality for your projects.

Johnson98 8 hours ago

For small projects, I wouldn't let that issue alone put me off the 140M. A little hydraulic drift can happen with an older machine, but it really depends on how much drift you're seeing and whether it affects the blade while you're working.

If you're only going to use a grader occasionally, I'd seriously consider renting one instead of taking on the maintenance costs of owning an older machine. If you plan to use it regularly, I'd look at the actual condition and service history rather than the model alone.

The 140M is a solid grader when it's in good shape. I'd also compare it with a 140H or 140K if you find one locally with a good maintenance history.

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