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CAT 314E Engine Oil Change & Other Routine Maintenance Tasks – Part 6

Written by Luis Montes Updated On  May 2, 2025

A heavy-duty mechanic greases the stick on a CAT 314E excavator

Previously, we showed you how to check the level and condition of the final drive oil and how to change it on the Cat 314E.

In Part 6, we’ll show you the location of the grease fittings on the Cat 314E excavator and the proper way to service them.

There’s also a video version of this task on the Tekamo HD YouTube channel. Check it out.

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If you don’t have the time to perform the service yourself or want to enroll in a preventative maintenance program for your heavy equipment, contact Tekamo HD to schedule a heavy-duty mechanic.

Recommendation From an Expert HD Technician

A heavy-duty mechanic holds a manual and an electric grease pump

Keith, the expert heavy equipment technician who serviced the CAT 314E, doesn’t recommend a lever-style manual pump. You can use it. However, it will start to get hard on the hands.

There are several grease fittings around the excavator, so using an electric or air pump is best.

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CAT 314E Grease Fittings Location

As a general reference, any moving point has a grease nipple (arms, bucket, pins, cylinders).

A CAT 314E with thumb and blade features the following grease points:

Grease pump icons point at the grease zerks on a CAT 314E boom, stick, and bucketGrease pump icons point at the grease zerks on a CAT 314E boom and blade

Photo source: www.boomandbucket.com

Proper Way to Service the Grease Zerks

A heavy-duty mechanic services the grease zerks on a CAT 314E excavator

Wipe off the ends of the grease zerks to prevent contaminants from entering the system.

Pump grease until you see it coming out from the joints.

A heavy-duty mechanic services the grease zerks on a CAT 314E excavator

The hydraulic cylinder zerks at the top of the boom and stick are tough to see while pumping grease. According to Keith, it’s better to see grease coming out from the top of those cylinders, even if that means a bit of a mess, rather than not seeing any grease and risking premature wear on the pins and bushings.

Next Post

In the seventh and final post, we’ll show you how to replace the cabin air filter on the CAT 314E excavator, the final task in the routine maintenance series.