Peterbilt 320 Service Manual


SKU: TMPB320SM Category:

Don’t waste time cutting corners using free information you’ve obtained off of the internet. With our factory manuals you’re 100% positive you’ve got the correct information for your engine serial number.
Factory printed Peterbilt service manuals.  This is the same manual as used by factory technicians.  Since each of these trucks are custom built your trucks VIN number is needed when placing order.  Place the VIN on the “Comments” line when placing your order.

Note:  If your truck is 1989 model year or older please contact us prior to ordering as some older manuals are no longer in print.  Contact e-mail:

Peterbilt Service Manual Chapters


  1. Introduction
  2. Hubs, Wheels & Tires
  3. Front Axle
  4. Rear Axle
  5. Brakes
  6. Air System
  7. Main Transmission
  8. Auxiliary Transmission & Transfer Case
  9. Clutch
  10. Driveshaft
  11. Frame
  12. Cab
  13. Cooling System
  14. Engine Installation (Engine manual must be ordered separately)
  15. Instrumentation
  16. Electrical (fuses, relays, circuit index, wire diagrams, etc.)
  17. Steering
  18. Suspension
  19. Lubrication & Filters
  20. Miscellaneous
  21. Noise Control System

Note: Fulfillment time from Peterbilt is approximately 60-90 days. This is due to the fact that these manuals are custom printed to the VIN you supply when placing your order. If order is being shipped outside the USA  additional shipping fees apply.

Peterbilt reserves the right to make changes without prior notice.


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