Snow Plow Blade Inspection & Pre-Season Checklists

The pre-season inspection is the cheapest hour of the winter

A checklist run in October finds the cracked insert, the stretched bolt and the worn skid shoe while the workshop is quiet. The same findings in January cost a call-out and a shift.

✓ Pre-season, in-season and post-storm checks
✓ What to look for on carbide, bond lines and carriers
✓ Finding hidden damage before it becomes a break

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The pre-season checklist

Edges, carbide, bond lines, fasteners, carrier, skid shoes, mounting height and spares. Ninety minutes per machine, once a year.

The edge and the carbide

Measure the edge at the marked points, look for chipped or missing carbide, and check the bond line for separation. A bond that has begun to fail is visible before it becomes a lost insert, and a lost insert damages the carrier around it.

Fasteners, carrier and skid shoes

Check every fastener for fretting and correct torque, look for elongation at the mounting holes, and set the skid shoes to their correct height. Loose hardware and worn shoes together account for a large share of in-season call-outs.

In-season checks that take minutes

A visual pass after every significant storm, and a measurement at every service interval, catches almost everything before it becomes a failure.

Post-storm visual checks

Look for loose bolts, newly chipped carbide and fresh damage to the carrier after a route with heavy impact. Two minutes at the yard prevents the failure that would otherwise happen on the next call-out.

Finding the damage you cannot see

Micro-cracks in carbide and bond-line failures start small. Where the duty is severe, a periodic non-destructive check — dye penetrant, ultrasonic or a simple tap test — finds problems that a visual inspection misses.

Inspection questions

When should the pre-season inspection happen?

At least a month before the expected first call-out, so that any parts needed have time to arrive. An inspection the week before the season starts leaves no room to fix what it finds.

How long should an inspection take per machine?

Around an hour to ninety minutes for a full pre-season check including fasteners and skid shoes. In-season checks are a two-minute visual pass plus a measurement at service intervals.

What is the most commonly missed item?

The bond line between carbide and steel. It fails progressively and is visible long before an insert comes off, but it is on the face of the blade where nobody looks during a visual pass.

Do I need non-destructive testing?

Only where the duty is severe and the consequence of failure is high — airports, high-speed highway work, heavy impact routes. For most fleets a careful visual inspection is proportionate.