Peterbilt 352 AC Driers & Compressors

Frequently Asked Questions About Peterbilt 352 AC Driers & Compressors

Will these AC components fit my specific year Peterbilt 352?

Most of our AC driers and compressors are compatible with Peterbilt 352 models from 1969 through 1980. However, there were mid-year changes in mounting brackets and hose configurations, particularly in 1974 and 1977 models. We recommend checking your existing compressor's part number or contacting us with your OEM to ensure proper fitment. Early models (1969-1973) typically use the York-style compressors, while later models may have Sanden or Seltec units.

What's the difference between a receiver drier and an accumulator, and which one does my 352 need?

Peterbilt 352s with factory AC use receiver driers, not accumulators. The receiver drier is located on the high-pressure side between the condenser and expansion valve. If you're converting from R12 to R134a, you'll need to replace the drier as part of the conversion. Our driers come with the correct fittings for your refrigerant type - just specify whether you're running R12 or R134a when ordering.

How difficult is it to replace the AC compressor on a 352, and what tools do I need?

Replacing the compressor typically takes 2-3 hours for someone with basic mechanical skills. You'll need standard hand tools, a manifold gauge set, and a vacuum pump. The main challenges are accessing the lower mounting bolts (a swivel socket helps) and properly routing the serpentine belt. Most installations require draining the system first, which should be done by a certified technician if you're not equipped to handle refrigerant safely.

Are aftermarket compressors as reliable as OEM units for the 352?

Quality aftermarket compressors from manufacturers like Sanden and Seltec often outperform original York-style units, offering better cooling efficiency and quieter operation. Look for new or remanufactured units with at least a 1-year warranty. Avoid used compressors unless they've been professionally rebuilt, as internal wear isn't visible and can contaminate your entire AC system with metal shavings.

My 352's AC isn't cooling properly - is it the compressor or drier that needs replacement?

Poor cooling is rarely just the drier unless the system has been opened or has moisture contamination. Check these items first: refrigerant level (most common issue), compressor clutch engagement, and belt tension. If the compressor cycles on and off rapidly, the issue is likely low refrigerant. If it doesn't engage at all, check the clutch wiring and pressure switches. Replace the drier any time you open the system or if you see green dye around the sight glass, indicating moisture contamination.