Maintenance & Reliability · Log Form
Heavy Equipment Undercarriage Track Tension Inspection Log
This log is used to verify track tension on heavy equipment (dozers, excavators) according to OEM specifications. Proper tension prevents premature wear, track derailment, and reduces undercarriage rebuild frequency.
Frequency
Weekly
Department
Maintenance
Asset Type
Tracked Heavy Equipment
Version
1.0
Overview & Purpose
This inspection log ensures that track tension is checked and adjusted according to manufacturer specs (typically 2–4 inches of sag at mid-point of the track). Regular measurement prevents damage to rollers, sprockets, and idlers. All readings must be recorded in inches or millimeters and compared to the threshold range provided by the OEM.
Equipment & Safety Prerequisites
- Lock out engine before adjusting track tension. Engage safety locks on all hydraulic systems.
- Wear heavy-duty gloves and safety glasses when working near high-pressure grease fittings or releasing track tension.
Inspection / Log Matrix
| Status (P/F) | Inspection Item / Task | Tolerance / Threshold | Actual Reading |
|---|---|---|---|
| [ ] Pass [ ] Fail | Measure track sag at mid-point between front idler and carrier roller | 2–4 in (50–100 mm) | _________________ |
| [ ] Pass [ ] Fail | Inspect track for missing or broken bushings | No missing or broken bushings | _________________ |
| [ ] Pass [ ] Fail | Measure track rail width (pin-to-pin) | ±1/8 in (3 mm) of OEM spec | _________________ |
| [ ] Pass [ ] Fail | Check carrier roller condition (no flat spots, excessive wear) | No flat spots; rubber surface height > 1/2 in (12 mm) | _________________ |
| [ ] Pass [ ] Fail | Verify tension cylinder seals (no leaks) | Zero external leakage | _________________ |
Defect / Corrective Action Log
| Date / Time | Item # | Issue Identified | Corrective Action Taken | WO # |
|---|---|---|---|---|
| ___/___/_____ | _______ | _______________________________ | _______________________________ | _______ |
Sign-Off & Verification
By signing below, the inspector verifies that all items have been checked according to the manufacturer's specifications and facility safety standards.
Inspector Name / Signature
Date & Time