Winter conditions are a separate operating regime for a trailer: low temperature turns moisture in the air system into ice, road salt accelerates corrosion, and snow and ice lengthen braking distance. Winter preparation is not a one-day maintenance job but a planned programme completed before the season — and the cheapest failure is the one that never happens.
Pre-Season Checklist
- Air system: Replacing the air dryer cartridge, draining the tank and checking line connections — frozen moisture is winter's number-one source of failure
- Brake system: Pad and disc condition, brake adjustment and electronic brake function test
- Tyres: Tread depth suited to winter conditions, damage inspection and chain equipment on routes that require it
- Lighting and electrics: Review of all lamps, sockets and cable insulation
- Corrosion protection: Underbody washing and renewal of protective coating — before the salt season starts
- Seals and mechanisms: Low-temperature-suited greasing of door seals, hinges and landing legs
The Planning Side
Operations must be adapted to winter as much as equipment: trip plans should add a weather-condition margin, drivers should be trained in chain fitting and icy-ramp behaviour, and alternative routes for critical lines should be identified in advance. The rhythm is kept up mid-season too — interim washes and air-tank drainage in salted regions become routine. A fleet that gets through winter without trouble is the product of a scheduled preparation, not luck.