Plows don’t die in January — they die in April, when they get parked wet, salty, and forgotten. End-of-season snow plow maintenance is an afternoon of work that decides whether November’s first storm starts with a working rig or a seized cylinder and a three-week parts wait. Here’s the full checklist.
1. Wash Like You Mean It
Salt keeps corroding all summer. Pressure-wash the plow, mount, wiring, and the truck’s entire underside — frame rails, brake lines, connectors — until the water runs clean. Let everything dry fully, then touch up bare metal and chips with paint or rust inhibitor. This single step adds years to a plow’s life and is the most-skipped item on the list.
2. Fluids and Hydraulics
Most manufacturers recommend replacing hydraulic fluid annually — end of season is the moment, so moisture-contaminated fluid doesn’t sit in the system all summer. Inspect hoses for cracking and abrasion, check cylinders for pitting and weeping seals, and cycle everything one last time after the change. A $30 fluid swap now prevents the $400 pump replacement in December.
3. Inspect the Wear Parts — and Order Now
Measure the cutting edge (replace if it’s near the moldboard), check trip springs for stretch and rust, inspect shoes/skids, pins, and pivot points, and go over every bolt on the A-frame and mount — a winter of vibration loosens things. Order replacement parts in spring or summer: prices are lower, stock is full, and you’ll never again explain to customers that you’re down for two weeks in January waiting on a cutting edge. (Choosing a new plow instead? Our brand comparison rates them all.)
4. Electrical: The November Headache You Prevent in April
Corroded connectors are the #1 cause of first-storm no-starts. Clean every plug and pin, coat with dielectric grease, check lights and solenoid, and cap connectors for storage. Wiggle-test the harness while running the plow — intermittent faults show themselves now, in daylight, instead of at 4 a.m. in a whiteout.
5. Store It Right
Indoors or covered if possible; off dirt (moisture wicks up — use planks or pallets); cylinders retracted to protect the rams, or exposed chrome coated with a light grease film. Drop the plow’s weight onto blocks rather than leaving it on the jack all summer. Spreaders get the same treatment: fully emptied, washed of every grain of salt, moving parts greased.
6. Truck and Records
Service the truck’s front end while winter abuse is fresh — ball joints, tie rods, brakes, and the front suspension carry the plow’s weight all season. Then spend ten minutes on paper: log the season’s repairs per unit, note what failed and when, and flag next year’s replacements. Fleet history is how you decide whether the old truck earns another winter — and it feeds the equipment planning in our fleet checklist.
The Spring Hour That Pays All Winter
Wash, fluids, parts order, electrical, storage, records — an afternoon per rig. Contractors who do it start every season with equipment that works; contractors who don’t fund their local dealer’s emergency-repair margins. While the trucks rest, point the energy at next season’s route list — our marketing playbook covers what to do in the off-season, and our sister company LocalContractorLeads.com can have exclusive leads waiting when the plows come back off the blocks.