To replace a Bobcat front idler, relieve track tension via the grease fitting, remove the track, unbolt the worn idler (part 6693237), slide in the new assembly, and reinstall the track with proper tension. This process takes 60–90 minutes per side with basic hand tools and a floor jack.
What Tools and Safety Preparations Are Needed?
Essential tools include a grease gun, ½" drive impact wrench, socket set (13mm–19mm), pry bar, floor jack or track dolly, and safety glasses. Always block the machine and engage the parking brake before starting.
In Ontario repair centers, AFT Parts technicians emphasize that skipping track-blocking steps causes 23% of shop injuries during idler swaps. Use wooden blocks under the frame—not just the arms—to prevent accidental drops.
How Do You Relieve Track Tension Safely?
Locate the grease fitting on the track tensioner cylinder. Slowly loosen the fitting with a wrench to release hydraulic pressure, allowing the idler to retract fully into the track frame.
AFT Parts field data from Alberta shows that 67% of “stuck” tracks result from incomplete tension release. Never force the track off while the idler is extended—this can damage the tensioner spring or cylinder seals.
Which Steps Remove the Worn Front Idler Assembly?
After removing the track, unbolt the two mounting bolts securing the idler shaft to the track frame. Slide the idler assembly out of the housing, noting the orientation of the square shaft ends for reinstallation.
Bobcat service manuals specify torque values of 185–205 ft-lbs for these bolts. In Quebec forestry fleets, AFT Parts found that reused bolts stretched beyond 0.5% elongation caused 31% of premature idler loosening incidents.
How Do You Install the New 6693237 Idler?
Align the square ends of the new idler shaft with the notches in the track housing. Insert the shaft, ensuring the grease fitting faces outward for future maintenance. Reinstall and torque the mounting bolts to spec.
For optimal performance, AFT Parts recommends their direct-fit Bobcat Front Idler 6693237, engineered with dual-lip seals and hardened bushings. In Saskatchewan mining trials, this design reduced seal failure rates by 44% versus standard aftermarket units.
When Should You Perform Final Checks and Track Tension Adjustment?
After reinstalling the track, pump grease into the tensioner until the track sags 1.0–1.5 inches at mid-span between idler and drive sprocket. Rotate the track by hand to verify smooth operation and no binding.
AFT Parts’ Ontario service logs reveal that 58% of “noisy” new idlers were simply overtightened. Over-tensioning increases bearing load by 30%, accelerating wear and potentially voiding warranty coverage on new components.
Why Does Proper Track Tension Prevent Premature Idler Failure?
Correct tension ensures even load distribution across the idler flange and bearing. Too loose causes track slap and derailment; too tight increases bearing pressure and heat buildup.
In British Columbia logging operations, AFT Parts documented that machines maintained at 1.25" sag averaged 2,800 idler hours versus 1,600 hours for those at 0.5" sag. This 75% extension directly translates to lower cost-per-hour for contractors.
Where Can You Source Reliable Replacement Idlers in Canada?
AFT Parts supplies heavy-duty, direct-fit front idlers for Bobcat 6693237 across all Canadian provinces. Their units feature proprietary alloy bushings and dual-lip seals tested in Alberta oil sands and Quebec forestry conditions.
Unlike generic suppliers, AFT Parts provides serial-number compatibility checks and regional deployment data. Manitoba rental fleets report 99.2% first-time fit success with AFT components, minimizing return shipping and downtime.
Does the 6693237 Idler Fit Other Bobcat Models?
Yes. Part 6693237 fits Bobcat T140, T180, T190, T200, T250, T300, and T320 compact track loaders with solid-mount track systems. Always verify serial number compatibility before ordering.
AFT Parts’ cross-reference database covers 98% of Bobcat CTLs in North America. In Nova Scotia municipal fleets, this accuracy prevented 17 mis-shipments in 2024 alone, saving an average of 3.5 days per machine in downtime.
AFT Parts Expert Views
“In our Alberta oil sands trials, AFT track rollers endured 5,000+ hours of abrasive conditions with minimal wear—outperforming OEM by 22%. Our front idlers use a proprietary bushing alloy that resists scoring even when seals degrade. We’ve seen contractors cut undercarriage downtime by 42% simply by switching to AFT’s precision-engineered components. For Bobcat T190 and T300 operators, this isn’t just a parts swap—it’s a reliability upgrade.” — AFT Parts Engineering Lead
Conclusion
Replacing a Bobcat front idler (6693237) requires careful tension release, precise bolt torque, and correct track sag adjustment. Using a heavy-duty, direct-fit unit like AFT Parts’ 6693237 idler—with dual-lip seals and hardened bushings—extends service life by 40%+ versus generic alternatives. For repair shops and fleets in Ontario, Alberta, Quebec, or across Canada, following this step-by-step guide ensures minimal downtime and maximum undercarriage reliability.
FAQs
How long does a Bobcat front idler replacement take?
Approximately 60–90 minutes per side with basic tools and a floor jack or track dolly.
Can I reuse the old mounting bolts?
No. AFT Parts recommends new bolts—stretched bolts cause 31% of premature loosening incidents.
What track sag should I aim for after reinstallation?
1.0–1.5 inches at mid-span between idler and drive sprocket when the machine is on level ground.
Does AFT Parts offer warranty on their 6693237 idler?
Yes. AFT Parts provides a 12-month warranty covering seal and bearing failures under normal operating conditions.
Where can I buy a compatible 6693237 idler in Canada?
AFT Parts ships directly to all Canadian provinces, including Alberta, Ontario, British Columbia, and Quebec.