Summer’s here and with it come the challenges that heat brings to your truck. Kenworth PremierCare Parts & Service recommends reviewing the following list as part of your summer prep:
Heating and air conditioning
Check to see if the air conditioner stops cooling at idle or when waiting at a stoplight.
When you’re idling, listen also for the A/C fan. If it’s cycling on and off excessively, that’s a sign of a possible problem.
Visually check the hoses, clamps and the drive belt for cracks or holes.
Clean the system filter regularly. Typically, the filter is found under the dash in front of the passenger seat. Pull it out, clean it and put it back in. If it can’t be cleaned, it’s time to replace it.
Clean the air conditioning condenser. You’ll find it in front of the radiator on most trucks. Because it transfers heat from the cab to the outside, you want to be sure the air flow is not restricted by a buildup of insects or other debris. It’s a good idea to keep an eye on the condenser throughout the summer, since it’s prime bug season!
If you find any of these are problems, you may want to take your truck to your dealer.
Lubrication system
• Check the levels in the oil reservoirs.
• Check all the other reservoirs as well, including the power steering, steer axle wheel bearings, the engine, the transmission and the differentials. Steer axle wheel bearing lubrication is critical in the summer, when air from the road can reach 140° F or higher, heating up the oil and changing its viscosity.