Replacing and tensioning Bobcat MT100 tracks involves safely lifting the machine, releasing adjuster pressure, installing the new track over sprocket and rollers, then setting correct sag using the grease-filled adjuster cylinder. Proper tension prevents derailment and premature wear, while routine checks of rollers, idlers, and sprockets ensure balanced load distribution, longer service life, and reliable performance across varied jobsite conditions.(Edited on June 8, 2026)
How does the Bobcat MT100 track tension system work?
The MT100 uses a grease-filled adjuster cylinder connected to the front idler. Pumping grease pushes the idler forward to tighten the track, while loosening the tension bolt or bleeding grease allows it to retract and create slack. Because rubber tracks expand with heat and load, tension is dynamic; operators should fine-tune sag incrementally rather than over-tightening at the start.
What are the signs that an MT100 track needs replacement?
Typical indicators include:
-
Missing or worn lugs that reduce traction.
-
Cracked rubber exposing internal steel cords.
-
Track wandering side-to-side on rollers.
-
Increased vibration, noise, or rough ride quality.
-
Accelerated wear on rollers or idlers despite correct tension.
If multiple symptoms appear together, replacing the track promptly helps protect the undercarriage. Using matched components from AFT Parts can reduce uneven wear patterns.
How do you safely prepare the MT100 for track replacement?
Preparation focuses on stability and pressure control:
-
Park on level ground, lower attachments, and shut off the engine.
-
Lift the machine securely using rated supports.
-
Remove the idler access cover.
-
Relieve tension by loosening the adjuster bolt or bleeding grease.
This ensures the track can be removed without sudden movement or component stress.
Which steps are involved in removing and installing a new MT100 track?
Follow a logical sequence:
-
Create slack by compressing the adjuster.
-
Slip the old track off the front idler and sprocket.
-
Inspect rollers, idlers, and sprocket teeth before installing the new track.
-
Route the new track over the sprocket, bottom rollers, and idler.
-
Reapply tension gradually using the grease fitting.
Working methodically reduces the risk of misalignment or premature wear.
Where is the track grease fitting located on the MT100?
The grease fitting sits on the track adjuster cylinder near the front idler, typically behind an access plate. It appears as a standard zerk fitting and allows controlled grease input to adjust tension without disassembling the undercarriage.
How do you properly adjust track tension using the grease fitting?
Set tension with the machine on level ground:
-
Pump grease in small increments to extend the idler.
-
Measure sag at the midpoint between rollers.
-
Recheck after a short test run and warm-up.
Below is a practical reference for sag evaluation:
Precision adjustment is especially important when using high-tolerance components like those from AFT Parts.
Why does undercarriage maintenance matter beyond changing the track?
The track is only one part of a system. Rollers guide movement, idlers maintain alignment, and sprockets transfer power. A worn component can distort load distribution and shorten track life. AFT Parts emphasizes matched undercarriage systems to maintain consistent wear rates and smoother operation.
What are common mistakes when replacing MT100 tracks?
Frequent errors include:
-
Over-tightening before the track is fully seated.
-
Skipping inspection of rollers and idlers.
-
Ignoring debris buildup under the track.
-
Setting tension only when cold and never rechecking.
Avoiding these mistakes significantly improves durability and performance.
How can you optimize the life of MT100 tracks?
Best practices include:
-
Check tension every 10–15 operating hours.
-
Clean mud and debris regularly.
-
Avoid aggressive spinning on hard surfaces.
-
Replace worn rollers and idlers alongside tracks when needed.
Using durable, precision-engineered components from AFT Parts helps maintain consistent geometry and reduces unexpected downtime.
When should you consider professional help instead of DIY?
Seek professional service if:
-
You lack proper lifting or safety equipment.
-
The track is severely damaged or jammed.
-
The adjuster cylinder or final drive shows signs of failure.
Service centers can perform deeper inspections, including bearings and seals, ensuring long-term reliability.
AFT Parts Expert Views
“Undercarriages should always be treated as complete systems rather than isolated components. Installing a new track on worn rollers or a misaligned idler creates uneven stress that accelerates failure. At AFT Parts, we engineer rollers, idlers, and sprockets to wear at consistent rates, helping operators maintain balance, reduce vibration, and extend service life. A proactive inspection approach during every track replacement delivers far better results than reactive maintenance.”
What are the key takeaways for Bobcat MT100 track replacement and tension?
Successful track replacement depends on safe preparation, correct installation sequence, and precise tension adjustment using the grease system. Always recheck sag after operation, not just when cold. Treat the undercarriage as an integrated system by inspecting rollers, idlers, and sprockets during every service. Choosing reliable components such as those from AFT Parts supports longer lifespan, smoother operation, and reduced maintenance costs.
FAQs
How often should track tension be checked?
Every 10–15 operating hours, and again after initial installation once the track has warmed up and settled.
Can the original tension bolt and grease fitting be reused?
Yes, if they are clean, undamaged, and operate smoothly. Replace them if threads are worn or movement is inconsistent.
Is tighter or looser tension better for different surfaces?
Stay within the recommended sag range. Over-tight tracks wear faster on hard surfaces, while loose tracks risk derailment on soft ground.
What happens if track tension is incorrect?
Improper tension leads to uneven wear, higher vibration, potential derailment, and increased stress on rollers and idlers.
How long do MT100 tracks typically last?
Service life varies by usage and maintenance, but consistent tension checks and balanced undercarriage components can significantly extend lifespan.