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How To Maintain Heavy Duty Equipment

Preventive Maintenance (PM) helps anticipate change, and wear and tear. Corrective actions are taken continuously to ensure reliability and performance. PM involves regular systematic inspections, modification and replacement of components as well as performance testing and analysis.

A successful preventive maintenance program extends construction equipment life and minimizes unscheduled downtime caused by equipment breakdown. Benefits from a proper PM program include:

Improved equipment and system reliability
Reduction of unexpected breakdown
Decrease in expensive parts replacement
Extended equipment life
Improved resale value
Better parts inventory management
Preventive maintenance is more than regular maintenance like lubricating and changing and filters. A proper preventive maintenance (PM) program is all-inclusive. It’s an intentional approach to equipment management from the time equipment is purchased until the end of its useful life.

Your Preventive Maintenance program can include any or all of these customer support services:

Total Maintenance and Repair Agreements
Machinery Inspection Programs
Site Inspections
Field Service
In-Shop Service
Diagnostic Technology
S-O-S Fluid Analysis including Fuel, Oil and Coolants
Failure Analysis
Product Link On-Board Analysis
Condition Monitoring
Electronic Information Collection
Machine Inspection Data
Historical Repair Data
Component Rebuilds
Component Tracking
Specialized Repair Tooling & Equipment
Equipment Management Software
Customer Training Seminars
Training and Safety Videos
Part of an effective PM program is identifying potential causes of machinery breakdown. By identifying potential causes of failure before they occur, you can save hundreds or thousands of dollars and maintain consistent work flows.

There are three types of machinery failure. Their causes and solutions are listed below.

Sudden failure is when machinery breaks without warning. Usually, the reason is obvious. The part is then fixed or replaced, and the equipment is returned to service.
Intermittent failure happens sporadically. This stoppage happens randomly, and it can be difficult to identify the cause. Intermittent failure is frustrating, costly in downtime and usually can be prevented by anticipating the cause and addressing it during maintenance.
Gradual failure is entirely preventable by doing routine maintenance and inspections. Wearing parts and components are noted to be near the end of their lifespan and are replaced before failure occurs.
These three types of machinery failure are almost always due to one of three main causes:

Thermally induced failure is where extremes in temperature cause break-downs in the equipment. This usually happens during large temperature fluctuations such as when a machine is being started in cold weather and is being warmed up. It also occurs when equipment is overheated. Extremely hot or cold periods can be prepared for during maintenance, and thermal failure can often be prevented.
Mechanically induced failure is easy to recognize. It’s also easy to prevent by making sure machinery components are maintained by replacing parts when needed, lubricating as required and tightening fasteners, as well as ensuring moving parts are properly aligned. Mechanical failure often happens due to overexertion, vibration, shock, collision and operator abuse.
Erratic failure is the most difficult to predict and detect. This occurs at random times and under varying conditions. Most erratic machinery failures are the result of sudden overloads on hydraulic or electrical systems. With electronic components, many erratic failures come from software or hardware malfunctions that are preventable by using diagnostic equipment during regular machinery maintenance.
Anticipating failure is at the heart of all preventive maintenance programs. Thorough knowledge of your machinery’s systems is the key to anticipating what’s likely to fail if proper maintenance is ignored. Cat Preventive Maintenance Agreements from MacAllister Machinery help you anticipate and predict problems before they leave your equipment inoperable.

Thorough product knowledge is invaluable when it comes to implementing an effective preventive maintenance program. Often, gaining this vital information is as simple as finding it in the machine’s equipment manual that has been researched and documented to isolate issues and prescribe the proper preventive maintenance.

Taking the time to read and understand the equipment manual should be a core principle in a PM plan. Manuals will prescribe the recommended service intervals for each component in the machine, what servicing products to use and what the acceptable operating conditions are for the equipment.

Owner’s manuals are also a great source of troubleshooting information. Not only do manuals prescribe maintenance steps and techniques, but they often have bullet-point itemization or flow charts of what to do during malfunctions.

Listen to Your Operators

Another valuable resource for getting to know your machines inside out is to involve the machine operators. Unless you’re on the controls on a daily basis, you’re not likely to have the intimate knowledge of each machine’s idiosyncrasies and quirks. Daily operators get a “feel” for the machine. Operators sense when something’s amiss, and they’ll tell you. Listening to them and appreciating their input is a wise preventive maintenance strategy.

Stop Operations When You Suspect a Problem

Stopping operation and dealing with a suspected problem between scheduled maintenance periods can be an enormous savings in failure costs and subsequent losses.

Don’t restrict maintenance to rigid schedules. Instead, allow the flexibility to respond with proactive intervention.

Knowledgeable machinery operators are more productive and cause less wear on machinery than untrained workers. Knowledgeable operators are also going to be safer to themselves and others working nearby. Properly trained operators will be more respectful of their equipment and more likely to look after it before, during and after construction duties. That’s going to save you money in repairs and replacement.

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