Mon August 29, 2022 - National Edition AEM

Preventive maintenance "is a very broad term," said George MacIntyre, product manager at ConExpo-Con/AGG exhibitor Case Construction Equipment.

"It can be as formal as the critical practice of performing regular service, as prescribed by the manufacturer of the machine, throughout the machine's life. Or it can be as simple as the daily walkaround you do of the machine at the beginning and end of each day to identify any potential issues that may impede safe and efficient operation."

Preventive maintenance is routine/scheduled maintenance of machines done "to keep them running reliably to prevent premature costly unplanned downtime," David Young, product application specialist, Caterpillar, added.

Regardless of the type of preventive maintenance program or machine, the desired result is improved safety and less downtime, plus the prevention of unnecessary costs, said Ryan Anderson, product manager, New Holland Construction.

"To keep your equipment performing at peak levels, it is critical that maintenance is prioritized accordingly," said Justin Steger, solutions marketing manager, John Deere Construction & Forestry.

"While it is essential to understand how to operate your machine, it is equally, if not more important, to understand how to maintain each machine to extend the lifespan of the equipment and improve its resale value. Sticking to the OEM maintenance schedule allows contractors to predict owning and operating costs more accurately and fix maintenance costs. Ignoring machine maintenance will increase the operating cost."

It is imperative to have preventive maintenance schedules for backhoes to keep them well-maintained. When parts are checked regularly, issues can be identified and scheduled to be corrected before they result in unexpected repairs, downtime and costs.

Backhoe preventive maintenance can be based on many parameters, such as the calendar, runtime and predictive.

"If a particular element is jumping up high in the particle count it could very well indicate that a certain part inside a large component is wearing out and that can be fixed before a major failure that could damage more parts within a component or destroy the entire component itself."

Good recordkeeping and proper documentation are essential aspects of backhoe maintenance, a philosophy shared by each backhoe OEM.

"This helps ensure that all preventive maintenance activities are done in the timeframe they are meant to be done and that the machine will continue to work as intended," said MacIntyre of Case. "Telematics makes that easier than ever, alerting fleet managers to when service intervals are approaching and helping simplify recordkeeping and proof that preventive maintenance activities were performed as intended and on schedule."

What's more, added Caterpillar's Young, recordkeeping and documentation "ensure preventive maintenance is done on time, which is especially important for critical systems like the engine, transmission and hydraulics. It also assists with predicting machine issues that are developing. For example, when oil samples are done as required, it can help determine if a problem is coming with a component."

Recordkeeping and documentation can help support warranty-related repairs; he pointed out. It also is very valuable when it comes time to sell or trade in a machine, as it adds value.

Backhoe manufacturers recommend that maintenance personnel always refer to the backhoe owner's manual to familiarize themselves with all the manufacturer-recommended maintenance procedures and intervals.

"All of the information to properly perform maintenance is located in the manual," said Deere's Steger.

Anderson of New Holland added: "Manufacturers have designed and engineered these machines to perform and be serviced. The owner's manual provides a basic checklist and identifies the location of the service points on the machine."

The backhoe manufacturers agree that good preventive maintenance starts with the backhoe operator performing an inspection of the entire machine before putting it to work.

"The operator should know that particular machine fully to understand what to check, and more importantly, be able to identify when something doesn't look right or might need attention based on the inspection," said Young of Caterpillar. "Also, it is about having and understanding the maintenance interval schedule for their machine and following that schedule as closely as possible. Cat dealers can help by providing documents that help track and understand the maintenance items.

Case's MacIntyre said the inspection is so important, that the company has done entire educational sessions on the topic.

Telematics is another place — besides the machine — that will inform the owners and operators about error codes or about sensor readings that are outside of the normal range, noted MacIntyre. Access to telematics data also can be shared with dealers and manufacturers to provide a second set of eyes on equipment performance.

Every time an inspection is done, the operator should start in the same spot and complete the inspection around the machine ending where they started. This routine makes it easier to spot what is normal vs. abnormal and makes sure nothing gets missed.

When performing the walk-around, visually inspect the machine's appearance and look for damage, check fluid levels and look for leaks, and take a close look at worn items that could prevent the machine from efficiently doing its job, advised Steger. Key inspection points will vary between machine forms, but the concept is the same.

New Holland's Anderson provided the below checklist for the typical backhoe walk-around inspection:

In addition, it is important that all operators verify the backhoe's safety features are working prior to operation and that all the controls are clearly labeled.

It is crucial for backhoe operators to perform a walk-around at the end of the workday as well," emphasized Anderson of New Holland, "because machine condition at the beginning of the day is usually not the same as at the end of the day. Machine damage may have occurred, fluid levels may have changed and other parts of the machine may have additional wear and fatigue.

"At the end of the day, operators should also make sure that the work tool, such as bucket teeth, are intact and not dull," added John Deere's Steger. "For auxiliary attachments, make sure that pressures and flows are set correctly to avoid damage to the attachment or machine."

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