Parts for your 2011 Mazda Premacy-Thrust bearing

2011 Mazda Premacy thrust-bearing — what it does and how to look after it

Per Mazda technical literature — the CW-series Premacy/Mazda5 workshop manual (Engine Mechanical, Crankshaft) and Global Service Support — this model uses dedicated crankshaft thrust bearings at the No. 3 main journal to control end play. On manual-trans variants, the clutch release (often called thrust) bearing is also fitted in the bellhousing. So yes, a thrust-bearing is relevant on the 2011 Mazda Premacy, both in the engine and, where applicable, the clutch.

The engine’s thrust bearing stops the crankshaft shuffling fore and aft under axial loads from the accessory drive, torque converter or clutch, and even the air‑con kicking in. By keeping end float within spec, it protects main bearings, the oil pump drive and gearbox input. It’s a two-piece bearing surface that runs on the crank’s thrust faces, fed by engine oil, location and sizing are engineered to handle constant light contact without scuffing.

Tell‑tale wear shows up as excessive end float, a knocking when depressing the clutch on manuals, erratic idle or rub marks on the crank thrust faces. For routine servicing there’s no scheduled replacement, it’s inspected whenever the sump is off, during a rebuild, or if end float is being measured. Keep oil changes on time with the correct viscosity and quality, because clean, stable oil film is the thrust bearing’s lifeline. If your Premacy is a manual, replace the release bearing whenever the clutch is out, use proper grease on the fork contact points, and check the input shaft sleeve for scoring that could chew the new bearing.

When replacing engine thrust bearings, verify crank end float against the workshop spec, inspect the crank’s thrust surfaces, and measure main bearing clearances. Any heavy grooving or blueing means the crank needs machining or replacement. Use quality bearings matched to the engine code, observe cap orientation, and torque fasteners in sequence with fresh oil on threads and seats. After assembly, recheck end float, prime the oil system, and avoid hard loads on first start to let the bearings bed in properly. Document all measurements for future reference and warranty, and road‑test gently while listening for anomalies or vibrations.

Popular questions

Where is the thrust bearing on a 2011 Mazda Premacy?

In the engine, it’s integrated at the No. 3 main bearing to control crankshaft end float. If the car is a manual, there’s also a clutch release (thrust) bearing on the gearbox input sleeve inside the bellhousing.

What symptoms point to a worn thrust bearing on this model?

Look for excessive crank end float, a knock when pressing the clutch, scuffing on thrust faces, or odd belt alignment. On manuals, a noisy or gritty feel when the clutch pedal is down suggests the release bearing is tired.

Do automatics have a thrust bearing issue to worry about?

Autos still rely on the engine’s thrust bearings to handle converter and accessory loads, but they don’t have a clutch release bearing. Keep engine oil changes up to date, internal inspection is only needed if end float is out of spec or the engine is apart.