Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1997 Mazda B4000 BaseFACTORY OEM SERVICE PROCEDURE
CMP Synchronizer: Installation
- Install Synchro Positioner (49 UN01 148) on synchronizer housing. See Fig 1 . Rotate synchronizer shaft until vane on shaft aligns with slot on synchro positioner. Rotate synchro positioner until engaged into notch in housing. Dip drive gear in engine oil.
- Rotate synchro positioner 60 degrees counterclockwise of crankshaft centerline before inserting synchronizer assembly into engine. See Fig 3 .
- As synchronizer is inserted into engine. synchronizer will rotate. When seated, synchro positioner should point at about 30° offset from engine centerline. Synchronizer electrical connector should be located in original position.
- Install hold-down clamp and tighten bolt to specification. See TORQUE SPECIFICATIONS . Install CMP sensor to synchronizer and tighten to specification. Reconnect wiring to CMP sensor. Connect negative battery cable.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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