Ready for winter: Truck air line inspection/replacement tips

Ready for winter: Truck air line inspection/replacement tips

Air lines should be inspected for damage to avoid failure on the road.

In preparation for the winter months ahead, air lines should be inspected for damage to avoid failure on the road.

However, component replacement is not only for the winter months; it can apply all year round. Although not always necessary, it’s a good practice to replace air lines, and air line accessories, annually to ensure proper working order. 

However, during routine PMs, or during pre-trip inspections, if any of the following issues are noted, air lines should be replaced much sooner to avoid possible air line failures, leading to downtime, or CSA violations:

  • Chaffing or damaged jacketing;
  • Rusted springs and/or fittings;
  • Nylon cables that are stretched out and no longer recoil; and
  • Kinked nylon cables.

When selecting air lines for a tractor/trailer, most know that it is recommended, and in some cases even required by law, to choose air lines with the following features:

  • Air line assemblies that display the appropriate markings which signify compliance with DOT regulations (fequired by law);
  • Swivel fittings on the tractor end to avoid corkscrewing during installation;
  • Spring guards to protect the hose or tubing from a sharp bend at or near the fitting (fequired by law);
  • Added handle grips at the trailer end to provide protection from kinking of air lines during gladhand connection and disconnection;
  • Coiled assemblies that extend to their maximum expected service length and return to their retracted position without sag;
  • Proper overall working length for the tractor-trailer application; and
  • If operating in harsh environments, using cables rated for extreme temperatures (lower than the typical standard of -40°F).

When installing new air lines, its always important to remember the following:

  •  If cables or handles are color coded, be sure to stall/couple them with their correlating connections (red to red, blue to blue); and
  • Always remove the old fitting from the tractor protection valve and install the new fitting attached to the new air lines.

This article was contributed by Phillips Industries.  

You May Also Like

Ralson Tire North America debuts RTR71 commercial truck tire

The RTR71 is built tough for spread axle trailer use, and features a robust casing design to resist cuts and chips.


Ralson Tire North America introduced the RTR71 commercial truck tire in the US. According to Ralson Tire, the RTR71 is built for spread axle trailer use, and features a casing design made to resist cuts and chips.

Other features highlighted by the company include:

16/32 in. of tread to handle high scrub and severe torque conditions;

Minimizer updates website, offers white papers

The company says it offers help finding the correct part number and locating local or online distributors to got your product from.

Freightliner’s Backup Alert System available for Plus Series trucks

The Backup Alert System is available to order for Freightliner Plus series trucks. Deliveries are expected to begin in summer 2024.

FMCSA pulls two ELDs from registered list

FMCSA says Blue Star ELD and ELD Mandate Plus devices did not meet minimum requirements, and were placed on the Revoked Devices list.

Apollo Tires US opens new Atlanta office

The company said this new office stands as the operational heart of the North American activities.


Other Posts

FTR: Trailer orders, production decreased in May

FTR’s numbers found a significant trailer order dropoff in May.

FTR sees rise in April trailer orders

With 13,016 units sold, April saw 9% m/m and 45% y/y gains. However, trailer orders were still 20% below the average for the last 12 months.

Peterbilt introduces Digital Vision System-Mirrors

Available on Models 579 and 567, Peterbilt says the DVS-M uses HDR cameras integrated into the mirrors to display video on interior monitors.

Hendrickson acquires Reyco Granning suspension business

Hendrickson expands its suspension solutions portfolio for medium- and heavy-duty vehicles while maintaining brand independence.