Mazda says that some 2004-08 B-Series pickups with manual transmissions may produce a squeaking sound when depressing or releasing the clutch pedal.
One likely source of the noise, the car maker said, is a dry interface between the clutch release cylinder bearing face and the pressure plate fingers. Replacing the clutch disc, pressure plate and clutch release cylinder with upgraded parts from a kit and lubing the release bearing and pressure plate fingers with Dow Corning Molycote G-n Metal Assembly Paste or an equivalent grease should eliminate the noise in short order.
Here are the part numbers for the new clutch kits:
2.3L — 1F71-16-400
3.0L — 1F70-16-400
4.0L — 1F72-16-400
"Factory Fixes" is written by Jim DePalma, a 30-year veteran of the auto repair business who has served stints as a service manager, parts manager and ASE-certified technician. His column provides vehicle manufacturers' authentic factory technical service bulletins (TSBs) that have been condensed for easier reading. Mr. DePalma advises that techs always check with a dealer or repair information system for the latest revisions before starting to work on a vehicle. He can be reached via email at [email protected].