2021 Peterbilt 320 technical service bulletins
15 technical service bulletins and manufacturer communications cover the 2021 Peterbilt 320, including one warranty extension.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- 7/700 Service Agreement
- Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes
- Info Only Unnecessary starter replacements can result from customer complaints regarding engine starting...
- Info Only
- The service information for Bendix Air Dryer maintenance is being updated to include new procedures.
- This bulletin provides information on the EPA21 MX fuel injector cleaning procedure and includes suggested...
- Information Only – New Level 1 required tools are available to support MY21B MX engines.
- Due to major data carriers phasing out 3G networks, chassis currently utilizing first generation Peoplenet...
- Information Only: Due to differences between the PACCAR MX-11 or MX-13 2021A and 2021B engines,...
- Fix-As-Fail – Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid (DEF) sensors are...
- Information Only
- Information Only – Windshield washer pumps have a high No Trouble Found rate
- Fix as Fail: Peterbilt has introduced an improved mounting bracket for low mount air tanks for vehicles...
- Fix as Fail: For all conventional models, except 387/587, equipped with Side-of-Cab (“SOC”) exhaust and...
- Information Only:
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