It is suitable for a variety of small construction and landscaping tasks. Featuring a powerful engine and solid build quality, the EX35 delivers impressive lifting and digging performance in its compact size. However, as with any machine, wear and tear of parts is inevitable over time which can impact performance and efficiency. Properly maintaining and replacing key Hitachi EX35 parts as needed will help you maximize the lifespan and value of your excavator.

The Hitachi EX35 excavator is a reliable and robust mini excavator

Excavator engine is one of the most important system

The engine is one of the most critical systems on an excavator that needs regular care. For the Hitachi EX35, a diesel Yanmar engine powers the machine. Over time, the engine oil will break down and require changing at regular intervals. You’ll also want to replace the air and fuel filters periodically. Check the coolant level regularly and change the coolant every couple of years. Other important engine parts like glow plugs, fuel injectors and injector seals should also be monitored and replaced when worn. A well-maintained engine will run smoother and use less fuel.

Tracks and rollers are another important parts

On the undercarriage, tracks and rollers experience a significant amount of wear and tear as the excavator moves around job sites all day. The tracks on an EX35 are made of rubber and come in heavy-duty options for maximum traction and durability. However, rubber tracks do have a finite lifespan of around 1,000 to 2,000 hours depending on work conditions. Keep an eye on the width and lugs of the tracks for signs of excessive wear. The rollers and idlers that guide the tracks also degrade over time and their bearings will need to be lubricated or replaced periodically. Spare parts for the undercarriage like bushings, pins and clamps should be on hand for repairs.

The hydraulic system as critical for the efficient operation of all excavator functions

The hydraulic system is critical for the efficient operation of all excavator functions such as the boom, arm, bucket and swing rotations. The hydraulic oil is what transfers energy from the engine and powers these movements. You’ll want to check the hydraulic oil level regularly and change the oil filter after the first 50 hours of use and then every 500 hours or annually. As for hydraulic hoses and lines, visually inspect them for cracks, abrasions, fluid leaks or bulging which indicate replacement is needed. The hydraulic cylinder rods and seals can also deteriorate, reducing digging power over time. Hitachi offers a full suite of genuine hydraulic parts for the EX35 if any component fails.

The bucket and teeth attachments are wear items

Among other key parts, the bucket and teeth attachments are wear items that take a lot of abuse when digging and loading materials. The bucket edge will develop nicks and eventually require welding or complete replacement. Meanwhile, the bucket teeth are the first point of contact with the ground and will need frequent changing as they get worn down or damaged on the job. Having spare buckets and teeth on hand will minimize downtime for repairs and replacements. Other possible replacement parts for the EX35 include belts, filters, shear pins, brushes, seals and control levers.