The first place you go for information about proper maintenance should always be your excavator's Operation and Maintenance Manual (O&MM). Keep it somewhere your operators can easily access it, like within the cab.
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Your O&MM will outline preventive and corrective maintenance procedures for your excavator, including model-specific part replacements and consumables like grease and engine fluids.
Excavator maintenance is both an external and an internal process. It's easy to determine your machine's condition from outward signs like scratches and dents, but paying attention to internal factors like fluid health can reveal problems that may have been undetectable.
Keeping thorough, detailed records of maintenance procedures for every machine can help you effectively manage your whole fleet. Here's what makes documentation so vital:
Using an integrated fleet management tool is an excellent way to gain visibility over all your machines at once because it stores all your information in one centralized location. Web-based fleet tracking tools like My.Cat.Com or mobile applications like the Cat App are great examples of fleet management tools.
We know taking the time to perform routine excavator maintenance is essential. It increases uptime, boosts your return on investment (ROI) and extends the life of your machine. On-site preventive maintenance procedures, in addition to scheduled check-ins at the shop, are key to gaining these benefits.
Here are some of the best excavator maintenance tips for minimizing wear and keeping your equipment in good condition.
Choosing the best machine for the job may seem unrelated to maintenance, but it's crucial to maximizing your equipment's useful life. Along with performing the best work, the right machine will be able to withstand the demands of your operation longer than a machine that is suited for other applications could.
Purchasing a machine with components meant for other applications can cause unnecessary damage, which can lead to lost productivity and costly repairs.
For example, mismatching the machine's shoe width to your application can significantly accelerate undercarriage wear. The appropriate shoe width for your machine will depend on the machine's size and work environment — a wide shoe is best for soft terrain, while a narrower width is better for hard ground.
This rule goes for your fluids, too. You should always use an oil that meets the specifications in your O&MM, as choosing fluids that are too viscous — or not viscous enough — can harm your excavator's systems or cause power loss to friction.
The ideal equipment management program should include the following elements:
Before you put any machine on your work site, you should go over the use and maintenance guidelines in your O&MM.
Your operators should also familiarize themselves with this information before they can use the machine. A thorough training course can help ensure they understand the material and know the right procedures to follow.
Here are some excavator-specific operating tips:
Fluids are the lifeblood of your machine. Performing a regular fluid analysis ensures vehicle health and improves your bottom line.
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Key fluids to monitor include:
You can perform these checks yourself, or, if your dealer offers this service, you can send fluid samples in to be tested at a professional lab.
Cat S•O•SSM Services provides professional fluid analysis from expert technicians to find signs of contamination, excessive wear or other hidden issues in the fluid samples you send in. You'll also get a full report of your machine's condition and actionable recommendations to bring your equipment back to full health. Talk to your local Cat dealer for more information.
Check your fluid and air filters frequently and replace them according to your O&MM's recommended intervals.
Engine air filters are important for keeping your engine free of dust, which can cause damage. Check this filter frequently to keep your engine dust-free. And make sure to avoid touching the secondary engine air filter during pre-shift checks.
Lastly, make sure to regularly clean out the cab's air filter. Your operators should always have clean air to breathe, after all.
Next-Gen Cat filters can reduce filtration costs by up to 15% with proper use and maintenance. Cat excavators group these filters together to allow for easy access.
Additionally, you'll want to keep an eye on your water separators. Cat machines have a sensor inside the cab to alert the operator when drainage is necessary, so you know it's time to clean it out if the light goes on.
Adequate lubrication on your excavator's sliding metal parts prevents grinding and overheating due to excessive friction. Before beginning the day's work, make sure all couplers and cylinders on your machine are well-greased and apply a new coat of grease to your slewing drive bearings every few hours or according to the specifications in your O&MM. If the bearings seem loose at all, you can use thread sealant to ensure they remain tightly fastened.
Of course, you want to use the right grease for your excavator for the best results — consult your O&MM for more information.
Just like how athletes warm up before an important game to ensure their best performance, giving your excavator time to warm up for the day can provide a boost to your productivity and prevent damage.
After starting the machine, allow the engine to warm up for the time specified in your O&MM — this step can take around 10-15 minutes. You can help speed up the process by engaging and disengaging the attachment controls. Then, perform the following actions:
Make sure to take care in moving the machine. First, check that the area is clear, then turn the dial to the operating engine speed range. Unlock the hydraulic lockout, raise the boom and begin traveling.
Shutting the machine down requires a similar amount of care. Park the machine on a smooth, level area and reduce the engine speed. Shut the machine down accordingly:
Once you've dismounted the machine, conduct your post-shift walkaround inspection as usual.