Tires, Steering & Brakes Inspection (Wheeled Excavators) directs field technicians to verify tire integrity, steering responsiveness, braking performance, road lighting, and axle/drivetrain leaks for safe, compliant roading and site movement.
- Verify tire pressure, tread, and lug torque to manufacturer specifications.
- Measure steering play and brake performance to prevent drift and rollaway.
- Document leaks at axles and drivetrain to avoid component failures.
- Interactive, commentable checklist with export and QR code authentication.
The checklist
Tires & Wheels
- Measure cold tire pressure on all wheels with a calibrated gauge; compare to the machine plate/manufacturer data. Acceptance: within specified range (flag variance > ±10%). Record kPa per tire and photograph gauge and data plate.
- Measure tread depth at inner, center, and outer ribs using a tire depth gauge. Acceptance: ≥ 8 mm or per manufacturer. Record mm per point; attach close-up photos with gauge visible.
- Inspect sidewalls and tread for cuts, bulges, exposed cords, or repairs. Use a ruler to size damage. Acceptance: no structural damage; cuts > 10 mm or cord exposure unacceptable. Photograph with scale reference.
- Check valve stems for cracks, leaks (soap solution), and caps with seals. Acceptance: no bubbling; caps fitted with intact O‑rings. Capture macro photos; replace missing caps and note action.
- Torque wheel lug nuts with a calibrated torque wrench to manufacturer N·m spec. Acceptance: within ±5% of specified torque. Record min/max N·m applied and add witness paint; photograph wrench reading and witness marks.
- Inspect rims for cracks, distortion, rust jacking, or missing clips. Clean and use visual/flashlight; apply dye penetrant if suspected. Acceptance: no defects. Photograph rim edges and suspect areas post-cleaning.
Steering System
- Measure steering wheel free play at the rim using a ruler. Acceptance: ≤ 50 mm at rim or within manufacturer limit. Record mm and capture short video of measurement.
- Check tie-rod ends and ball joints with a pry bar while an assistant holds steering steady. Acceptance: no measurable axial/radial play; boots intact. Photograph joints and any boot damage.
- Inspect steering cylinder rods and seals; wipe clean, cycle steering lock-to-lock, then recheck. Acceptance: no fresh wetting or drip. Capture before/after photos of rod/seal areas.
- Verify steering pump and hose connections for secure fittings and chafe guards. Measure hydraulic pressure at the steering test port with a calibrated gauge. Acceptance: within spec ±10%. Record MPa and photograph gauge.
- Function-test oscillating axle lock (if equipped): engage/disengage per manufacturer procedure. Acceptance: smooth operation; indicator lamp active. Record engagement time and attach photo of indicator status.
Braking System
- Inspect brake lines/hoses for abrasion, kinks, or contact points. Ensure clearance ≥ 10 mm from sharp edges; add protection if needed. Acceptance: no damage, proper routing. Photograph representative hose runs.
- Check service brake accumulator/pressure via test port using a calibrated gauge. Acceptance: within manufacturer range. Record MPa; photograph gauge and test point.
- Service-brake stop test on level, dry surface from ~10 km/h. Acceptance: straight stop without pull, vibration, or squeal; stopping distance aligns with manufacturer data. Record distance in metres and attach video if safe.
- Parking brake hold test on a 15% gradient (or approved ramp). Chock wheels as backup. Acceptance: no movement for 5 minutes in neutral. Record gradient and time; capture video/photo evidence.
- Measure brake pedal travel from rest to firm point with a ruler. Acceptance: within spec, typically ≤ two‑thirds of full stroke. Record mm and photograph the measurement.
Road Lights & Signaling (If Applicable)
- Verify headlamps (low/high), indicators, brake lights, tail and reverse lights, horn, and mirrors. Use an assistant to confirm functions. Acceptance: all illuminate/sound correctly; lenses not cracked. Photograph each function.
- Check rotating beacon and hazard lights required for roading per approved project specifications and authority requirements. Acceptance: beacon visible 360°. Capture photo/video in operation.
- Aim headlamps using a flat wall/aiming board at 10 m. Acceptance: beam cut‑off within manufacturer vertical/horizontal offsets. Record offsets in mm and photograph the board.
Axles & Drivetrain
- Inspect axles, differentials, and hub reductions for leaks. Clean, run machine 5 minutes, recheck for fresh wetting or drips. Acceptance: dry surfaces, no drips. Photograph before/after.
- Check differential and hub reduction oil levels via dipstick/fill plugs. Acceptance: within marks/level points. Record litres added if topped up; photograph plugs and dipstick.
- Inspect driveshaft U‑joints, yokes, and guards; rotate shaft by hand to feel play. Acceptance: no looseness > 0.2 mm; guards secure. Torque guard fasteners to spec and record N·m; attach photos.
Preview the printable checklist
Preview page one below. Open the image or download the PDF for all pages.
At a glance
- Focus on tire pressure, tread health, and wheel fastener torque using calibrated tools. Evidence includes kPa readings, depth in millimetres, N·m torque logs, and geo‑tagged photos of gauges and identification plates for clarity and traceability.
- Steering responsiveness is validated through measured free play at the wheel rim, linkage inspection, cylinder seal checks, and hydraulic pressure readings. Outcomes include straighter tracking, predictable response, and early detection of joint wear or hydraulic fatigue.
- Brake reliability is proven with accumulator/pressure checks, service-brake stops on level ground, and parking-brake hold on a 15% gradient. The process reduces pull, fade, and creep risks while delivering recorded distances, MPa values, and videos.
- Interactive online checklist with tick, comment, and export features secured by QR code. Teams create auditable records, share PDF/Excel reports, and assign corrective actions immediately, aligning with manufacturer specifications and project or authority requirements for roading.
How to Use This Interactive Tires, Steering & Brakes Checklist
- Preparation: Park on level ground, apply parking brake, chock wheels, and isolate hydraulics. Wear PPE (hi‑vis, gloves, eye protection). Gather calibrated pressure gauge (kPa), torque wrench (N·m), hydraulic pressure kit (MPa), tread gauge, pry bar, lighting board, cleaning rags, and camera-enabled device.
- Open the interactive checklist, select the machine ID, and review manufacturer specifications from the data plate/manual. Enable location and time stamps. Affix or scan the machine’s QR code to associate records.
- Execute items in order. Enter readings (kPa, mm, N·m, MPa), attach photos/videos of gauges and components, and tag nonconformances. Use comments to note causes, temporary controls, and required parts.
- Use the commentable workflow to request supervisor review for out-of-tolerance findings. Assign corrective actions, due dates, and responsible persons. Recheck and close actions with evidence attachments.
- Using the Interactive Checklist: Toggle tick boxes as you complete steps, add annotations on photos, and link reference documents. Validate mandatory fields before proceeding to the next section.
- Export and Share: Generate a report and export as PDF/Excel, including media and signatures. Share with maintenance, operations, and compliance teams.
- Sign-Off and Archive: Capture digital signatures from inspector and supervisor. Archive records with QR authentication for future audits and preventive maintenance planning.
Why Tire and Wheel Accuracy Dictates Mobile Safety
Tire health on wheeled excavators directly influences stability, braking, and steering performance. Cold pressure should be verified in kilopascals against the machine plate, allowing no more than a ±10% variance to prevent heat build-up or bead unseating. Recording tread depth at inner, center, and outer ribs exposes misalignment and underinflation wear patterns. Sidewall cuts, bulges, and any exposed cords are immediate red flags, as carcass failures often begin at minor-looking defects. Lug torque matters just as much: under‑torque permits fretting and stud fatigue; over‑torque risks stretching studs and distorted rims. Applying a calibrated torque wrench to the manufacturer’s N·m specification and marking witness paint ensures repeatable security. Documenting evidence—kPa readings, depth in millimetres, torque ranges, and photos of gauges and witness marks—creates an auditable trail and speeds corrective action approval. On real jobs, teams catch mismatched pressures after a tire swap and avoid roadside failures by re‑torquing wheels after initial settling.
- Capture cold pressure kPa and photo the data plate.
- Measure tread at three points across each tire.
- Witness-mark lug nuts after torque verification.
- Reject tires with bulges, deep cuts, or exposed cords.
- Record serials and corrective actions for traceability.
Steering and Brake Confidence Through Measured Tests
Small steering faults become big alignment issues at transport speed. Measure steering wheel free play at the rim and compare with manufacturer limits; excessive movement points to worn tie‑rod ends or joints. Inspect cylinder rods and seals for fresh wetting after cycling lock‑to‑lock to rule out leakage that degrades response. For brakes, combine a pressure/accumulator check (MPa) with functional tests. On a level, dry surface, complete a service‑brake stop around 10 km/h and confirm straight, predictable deceleration without pull or vibration. On a 15% gradient, the parking brake must hold for five minutes with transmission in neutral and wheels chocked as a safeguard. Pedal travel beyond two‑thirds stroke signals adjustment or component wear. Field teams often uncover chafed hoses and insufficient accumulator charge that would otherwise reduce stopping power under load.
- Record steering free play in millimetres at rim.
- Check ball joints for boot tears and looseness.
- Log brake pressure readings in MPa with photos.
- Prove straight, even stops without pull or noise.
- Verify parking brake hold on a 15% slope.
Leaks, Road Lights, and Readiness for Legal Roading
Axle, differential, and hub reduction leaks progress from dampness to drips, drawing in debris that accelerates wear. Clean suspected areas, run the machine briefly, and re‑inspect for fresh wetting to differentiate old residue from active leaks. Confirm differential and hub oil levels at dipsticks or level plugs, recording any litres added. Driveshaft U‑joints must rotate without perceptible play; guards must be present and tight. For roading, road lights and signaling become safety‑critical. Verify headlamps, indicators, brake and tail lamps, reverse alarm, beacon, and horn. Aim headlamps using an aiming board at 10 m to achieve the manufacturer’s pattern, capturing the offsets. Ensure beacon visibility 360° when required per approved project specifications and authority requirements. Photos and short clips create defensible evidence that the machine is road‑ready, preventing rejection at site gates or during spot checks.
- Differentiate active leaks with a clean–run–recheck method.
- Maintain oil level within dipstick marks or fill ports.
- Confirm beacon visibility and lamp function.
- Photograph lighting tests and aiming results.
- Tighten guards; document torque values.
