Inspecting a Caterpillar 140G Motor Grader

  • Editorial Team
  • Motor Graders
  • 26 May 2021

When you are looking into buying a new motor grader, and you have already figured out which motor grader best suits your job, the next step is to properly inspect the machine you are looking to buy. If you have chosen a 140G motor grader for your job, you are in luck! We have all the tips you will need for inspecting a 140G motor grader.

While testing a Caterpillar 140G motor grader, there are a few things that are very important to keep in mind. The Caterpillar 140G is a tough, long-lasting grader that was manufactured between the years 1974 and 1996. If you are searching for a trustworthy machine at a fair price, this is a great option for you. Even so, any pre-owned grader should be thoroughly inspected before being purchased.

Caterpillar 140G

Steering Wheel

Controlling the direction of where the machine travels is one of the most important parts of using a grader, so checking the steering wheel is extremely important. How can you do that? Well, switch the steering wheel completely to the left and right side while the grader is still in operation. Be on the lookout for any strange noises coming from the machine. Some unusual or noisy sounds might very well be a sign of a fault with the cushion valve that could result in a steering malfunction.


Make sure to look at the hydraulics of the motor grader and search for any signs of damage or overuse. Look for leaks or any sign of wear or disfiguration on its rods or pins. Check the stirrup arms and the hydraulic cylinders for any damage resulting from overuse while the motor grader is either raised or lowered.

The Circle

When grading, the circle is put under a lot of stress, so try to ensure that it is free of damage or dysfunction. During movement, look for undue activity in the levers, crank, and linkage. On the circle or the A-frame, check for flaws or welding repairs.


Scrutinize the moldboard’s upper and lower half for harm. On the top, the side rails should be safe from impact damage. Ensure that almost all of the bolts are securely fastened. The moldboard must be removed if the cutting edge is much less than 13 cm long.

Alignment of Frame 

Examine the grader’s overall posture to ensure that the frame is not tipping to one side. To ensure accuracy, calculate the space between the tandems and the back wheels. There may be a bent or lax articulation position if the front and backend of the grader are not balanced.

Front Wheels

When the front end is elevated at least 15 cm, both front wheels can turn quickly. In addition, there must be no additional play in the radius arms. Weigh down on one wheel to verify the axle turn. The axle should be able to travel freely without bouncing.

MY Equipment

If you are looking for a used motor grader for sale, get in touch with us here at MY Equipment. We have a range of motor graders available for sale, including the Caterpillar 140G. Browse through our selection at