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Service bulletin SB 20-336 (A)

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 id10189129
Published by NHTSA2021-03-17
Manufacturer's numberSB 20-336 (A)
Manufacturer's date2020-06-29
NHTSA componentPOWER TRAIN; EQUIPMENT

NHTSA's summary

Transmission Mounted Power Take-Off (PTO) Inspection and Preventive Maintenance Describes inspection and tightening procedure for PTOs to avoid leaking. This applies to all units mounted on a chassis with a transmission mounted PTO.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Equipment and accessories, Transmission and driveline

Vehicles listed
HEIL HEIL

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