WenmarOpen by Wenmar Pro

Service bulletin P1550

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 id634181
Published by NHTSA2002-09-28
Manufacturer's numberP1550
Manufacturer's date2002-06-25
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:DIESEL

NHTSA's summary

SUBJECT REGARDING J-TECH ACTUATING PIN ADJUSTING SCRE REPLACEMENT, ENGINES AFFECTED - ALL E-TECH ENGINE MODLES MANUFACTURED ETWEEN JANUARY 2002 THROUGH MARCH 2002 (ENGINE SERIAL NOS. 2A0001 THROUGH 2D2687). NLM

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

Engine

Vehicles listed
MACK MACK

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