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My Komatsu

Undercarriage


Undercarriage Services through the Komatsu Track Management System (TMS)

  • Thorough inspection of undercarriage systems
  • Accurate determination of wear on parts
  • Easy-to-read reports and graphs
  • Any brand, any model, any size

Manage Your Undercarriage Wear

Correctly managing the undercarriage of your excavators and crawler dozers is critical to their service life and productivity. A "Run to Destruction" approach is not always the best option. Based on your machine's application and the amount and type of wear, Komatsu Equipment Company can develop an appropriate undercarriage management program to better schedule necessary service.

FREE Undercarriage Inspection Service

Regular undercarriage inspections and timely replacement and repair will help extend the life of the undercarriage, increase productivity, reduce downtime, and reduce the machine's cost per hour.

For an accurate estimate of how much life is left in key undercarriage components, ask for our free undercarriage inspection service. The service includes electronic and ultrasonic measurement of the key undercarriage components:

  • Bushings
  • Link height
  • Shoe height
  • Roller shell thickness

By understanding the percentage of wear for the key undercarriage components, you can plan for future replacement and repairs. The undercarriage inspection service is complete in just 30 minutes. At the end of the inspection, we provide a written report with our recommendations for maintenance and repair activities.

Manage Undercarriage Life

Once the undercarriage is put on the track press and dismantled, a full inspection analysis report with detailed recommendations on specific components is provided. The thorough inspection includes the following checkpoints:

  • Seals
    • Inspect sealing surface for wear, damage, deterioration and roughness
  • Pins
    • Inspect pin surface and ends for stepped wear, scraping, cracks and faults
  • Bushings
    • Inspect surfaces for wear, cracks, breakage and corrosion
  • Links
    • Inspect load ring for wear where surface comes in contact with the link
    • Inspect link for wear where surface comes in contact with bushings
    • Inspect link bore surfaces, height and bushing face surface for serviceability
  • Spacers
    • Inspect the spacer for corrosion, wear, cracks and breakage
  • Shoes
    • Inspect shoe and link mating surface
    • Repair mating surface by sanding

Undercarriage Service Frequency

Tracks should be serviced whenever track links or pins and bushings fail, leak or wear out. Depending on the type of ground conditions your excavator or dozer operates in, Komatsu Equipment recommends servicing your tracks annually to keep them in the best possible condition. Tracks that are used under more extreme conditions need to be serviced more frequently.

Track Press Capabilities Any Brand, Any Model, Any Size

The new Komatsu Equipment track press can handle all tracks, regardless of the brand or size. Anything as large as a Komatsu mining dozer or excavator to as small as a utility dozer or excavator can be accommodated on the track press. With 360 tons of pressing force, it has the muscle to work practically any track chain safely.

The WTC 360 Track Press combines state-of-the-art technology and an innovative design to enhance quality and speed, with faster turnaround times. A 10,000 lb-ft, all-electric torque wrench utilizes computer controlled torque settings for the most accurate and consistent torquing of track shoe bolts to meet OEM specifications. A shoe lifting device eliminates handling during pin and bushing turns, and makes pad changeovers faster and easier.

In the Field—Komatsu Undercarriage Tooling

If undercarriage repairs are needed in the field, Komatsu Equipment field technicians are equipped with a line of portable track presses, capable of handling anything including 12 ton excavators, up to D475-size undercarriages. The double-acting, portable hydraulic presses allow Komatsu Equipment technicians to disassemble and reassemble chain sections right in the field (pins, bushings, links, rollers, track pads, sprockets, shafts, etc.).

Tips for Extending Undercarriage Life

Track shoe width—Use the most narrow pad to maintain adequate flotation. If a pad is wider than necessary, there is extreme stress on other components, especially the track link seals.

Track adjustment—Follow the guidelines in the OEM operator’s manual to determine proper track tension. Remember to adjust track tension to the operating conditions. As packing conditions increase, the adjusted track tension should decrease.

Sprockets—Carefully monitor sprocket wear, which is an indicator of operating problems and can indicate the condition of the internal pin and bushing assembly. Sprocket replacement is usually necessary whenever the mating surface of the bushing is changed, when rotating or replacing bushings or replacing the chain assembly.

Rollers—As the track roller tread area wears, the roller flanges grow closer to the link pin boss area. The pin boss area will be damaged if the flanges are allowed to come into contact with the pin boss. Damage in the pin boss area can eliminate the bushing turn option. Roller flanges contacting this area will wear away structural material and the pin end will be damaged. Cracking can occur when pressing the pin out or in, if the structure is weak. During the pressing process, damage and “flaring” to the pin end can cause damage to the internal pin boss area, and the pin boss cannot properly retain the pin after reassembly. Repositioning rollers from higher wear positions, at both the front and rear of the machine, to less wear center positions can be helpful to alleviate wear.

Bushing Turn—Turning the bushing 180° to use the unworn area allows using not only the entire wear surface of the bushing but also more of the link. Timing is key, however. If the bushing has worn past the wear life limit, the chances of damage to the bushing increases during the processing of pressing in and out, because the thickness of the bushing wall may be dangerously thin.

Alignment—The quickest way to detect an alignment problem is to look for anything shiny that should not normally be shiny. Indicators that the track frame alignment system needs adjusting are: inside of track links are scuffed and shiny, roller and front idler flanges show wear, and sides of sprockets are coming in contact with the inside of track links.

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