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Service bulletin TSB-809-1

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10031064
Published by NHTSA2010-01-04
Manufacturer's numberTSB-809-1
Manufacturer's date2009-09-16
NHTSA componentPOWER TRAIN:MANUAL TRANSMISSION

NHTSA's summary

PETERBILT: THE OIL SLINGER THREADS ON THE INPUT SHAFT ARE MACHINED WITH AN INCORRECT THREAD DIRECTION (RIGHT HAND INSTEAD OF LEFT HAND). THE ISSUE CAUSES A VERY SMALL, SLOW, FLUID LEAK ABOUT THE LOCATION OF THE INPUT SHAFT AND THE INTERFACE TO THE TRANSMISSION. THE LEAK DOES NOT CAUSE A CONCERN FOR LOW LUBE TYPE FAILURES OR SECONDARY OIL CONTAMINATION TYPE DAMAGE. NO MODEL OR MODEL YEARS LISTED. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Transmission and driveline, Manual transmission

Vehicles listed
PETERBILT PETERBILT

Listing a model year does not mean every vehicle of it is concerned: the document says which.