Winter prep: the parts to check before the first cold snap

Cold mornings find every weak spot on a truck. The parts that fail in January are usually the ones nobody looked at in September. Here is what to check now, while you can still book the shop time.

Batteries and cables

Cold thickens oil and weakens batteries at the same time, so a battery that starts a truck at 50°F can fail at 10°F. Load-test each battery rather than trusting the voltage reading, clean the terminals, and check that the hold-downs are tight. If a set is three winters old, budget for replacements before you are jump-starting in a yard at 5am.

The air system

Water in the air system is a summer problem that becomes a winter breakdown. Drain the tanks, listen for the dryer purging at governor cut-out, and change the air dryer cartridge if it has been a year or more. Wet tanks mean frozen valves and lines, and that means a truck sitting still.

Fuel

Start treating fuel before the first cold snap, not after the filters wax up. Keep anti-gel on the truck, carry a spare fuel filter, and check the fuel heater if the truck has one. Once fuel gels, the cure is slow and expensive.

Starting aids

Test block heaters now, and look at the cord as well as the element: cracked insulation and bent plug pins are the usual reason a heater does nothing. If a truck parks outside every night, a working heater saves both fuel and starter motors.

Seeing and being seen

Fit winter wiper blades, top up with a washer fluid rated for your lowest temperatures, and walk around the truck with the lights on. Salt spray dulls lenses and corrodes connectors, so check marker lamps, reflectors and the trailer cord ends while you are there.

Brakes, tyres and traction

Measure lining thickness and drum wear now, check slack adjuster travel, and look for cracked air lines and worn gladhand seals. Check tread depth across the drive axles, confirm the chains you carry are the right size for the tyres on the truck today, and make sure the hooks and tensioners are all there.

The cab

A driver who cannot clear the windshield will not run the load. Check heater hoses for soft spots, test the defroster on high, and replace the cabin filter so the airflow is there when it matters.

Not sure what fits?

Have the year, make and model to hand, along with the number stamped on the part you are replacing, and our parts team will work out the rest. Call (800) 541-8459 or (717) 691-1800, or email sales@truckpartsplusinc.com.