Parts & Services

Parts and Service

Since 1940, Johnson Machinery has been providing heavy equipment parts and service to businesses throughout southern California. Our clients include many of the region's leaders in the manufacturing, agriculture, material handling and other industries. Whether you need emergency repairs, preventative maintenance or fast delivery of new or used parts, our team has the expertise and commitment to outstanding service that will keep your equipment running its best for years to come.

An Authorized Cat Dealer Serving Southern California

Johnson Machinery is the only authorized Cat dealer serving Riverside and San Bernardino counties. This means you can count on our team for warranty service for all Cat products and affiliated brands, the best selection of authentic parts, quality used items and much more. Our factory-trained technicians have access to all the latest service bulletins as well as diagnostic tools such as the Scheduled Oil Sampling (SOS) protocol that can help you get the most out of your heavy equipment.

New Cat Parts

Quality Cat equipment demands the best parts, and when you need an item for an emergency repair or for scheduled service, you'll get it faster at Johnson Machinery. Our clients have access to the Cat PartStore (becoming Parts.Cat.Com), the largest heavy equipment parts inventory in the country with over 800,000 items. Online ordering is convenient and allows you to check availability in real-time. 96% of our inventory can be delivered to you the same day; 98% is available within 24 hours. At Johnson Machinery, we know how important it is to minimize equipment downtime – count on our parts team for service and selection that goes the extra mile.

Used Cat Parts

There are many benefits to buying used heavy equipment parts. Not only will you save money and avoid the wait for backordered items, but buying used also lets you purchase a complete assembly for a major part rather than buy the components individually. Our used parts department offers the best selection of items for Cat machines. If we don't have what you're looking, we can easily source the item from our nationwide dealer network. Browse our current inventory online, or contact our team directly for more information.


The service experts at Johnson Machinery can help you extend the life of your Cat and allied equipment though proactive maintenance, emergency repairs and sophisticated diagnostic technology. As an authorized Cat dealer, our service department is able to offer:

- 24 hour emergency on-site repairs that get your equipment fixed faster

- Preventative maintenance and fleet management programs that save you money on regular service items

- Computerized record keeping to ensure your heavy machinery stays serviced

- Factory-trained technicians who know Cat equipment and have access to the latest service bulletins direct from Caterpillar headquarters

- Transmission and other major component repair/rebuild services

- Certified equipment rebuild services that give your aging machinery a second life

- Cat Scheduled Oil Sampling (SOS) fluid diagnostics that help you streamline maintenance and anticipate when repairs will be needed

- and more!

Emissions Testing and Machine Inspections

Johnson Machinery also offers machinery inspections that help you make informed purchasing and service decisions by using the experience and expertise of our skilled technicians. Our dedicated Emissions Solutions Team can also help you maintain compliance with federal requirements and state requirements for your entire fleet of on-road and off-highway vehicles.

Education and Training

Making sure your staff is properly trained to use all applicable equipment reduces your liability and improves your cost of ownership. A well-trained employee knows how to make the most of your equipment resources and operate your machines more efficiently. Johnson Machinery can provide on-site training on a range of topics, from safety best practices to proper operating technique. Contact our team directly for details.

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