Parts for your 2004 Toyota Crown-Thrust bearing

2004 Toyota Crown thrust bearing — what it is, where it is, and when to service it

Referencing Toyota’s S180 Crown New Car Features and the 4GR‑FSE/3GR‑FSE Engine Mechanical repair manual, the 2004 Toyota Crown is fitted with a crankshaft thrust bearing as part of the main bearing set. These manuals specify measuring crankshaft end play and identify thrust faces at a specific main journal. Toyota’s model information for the S180 also shows the Crown shipped with 5‑ or 6‑speed Aisin automatic gearboxes (A650E/A760E range), which do not use a clutch release/“thrust” bearing. Further, the Crown’s front suspension is double wishbone (not MacPherson), so there’s no strut top thrust bearing. In short: engine thrust bearing — yes, clutch release thrust bearing — no, strut top thrust bearing — no.

On this model, the thrust bearing’s job is to control the crankshaft’s end float. It takes axial loads from the torque converter and from accessory/belt forces, keeping the crank tracking straight in the block. That protects the crank, rods and timing gear, and prevents odd issues like fore‑aft crank movement that can throw out sensor gaps or create noises under load.

For servicing, the thrust bearing isn’t a routine replacement item, it’s inspected any time the sump is off or the bottom end is open. A workshop will check crankshaft end play with a dial indicator against the spec in the Toyota engine manual and examine the thrust faces for scoring or copper showing through. If end play is out of spec or the bearing is marked, replacement is on the cards.

Replacement is a precise job: the lower halves sit in the main bearing cap and the uppers in the block, so correct orientation, cleanliness, and assembly lube are critical. It’s wise to check oil pressure history, converter alignment, and flexplate run‑out if abnormal axial loads were suspected. Fresh quality engine oil at the right viscosity and regular changes do a lot to keep thrust faces happy over high kilometres.

Common signs that prompt a check include a light metallic scrape at idle with the A/C or steering loaded, visible fore‑aft movement of the crank pulley, glitter in the oil, or inconsistent crankshaft position sensor signals. Because the 2004 Crown is automatic, there’s no clutch release bearing to blame for noise when “clutching in” — if someone mentions a “thrust bearing noise” on this car, they’re usually talking about the engine’s crank thrust, not a gearbox part.

• Best practice: measure end play during any bottom‑end work.
• Use OEM‑quality bearings and follow the Toyota torque sequence and specs.
• If end play is borderline, investigate converter and flexplate alignment before buttoning up.

Popular questions

Does a 2004 Toyota Crown have a thrust bearing?
Yes — in the engine. The crankshaft uses a thrust bearing integrated with the main bearings to control end float. The car’s Aisin automatic doesn’t use a clutch release (thrust) bearing, and the double‑wishbone front end means there’s no strut top thrust bearing either.

What are the symptoms of a worn thrust bearing on a 2004 Crown?
Tell‑tales include noticeable fore‑aft movement at the crank pulley, a faint scrape or knock at idle that changes with accessory load, metallic debris in the oil, or timing/idle irregularities due to crank sensor gap variation. A dial gauge end‑play check against Toyota’s spec confirms it.

When should the thrust bearing be replaced?
It isn’t a scheduled service item. It’s assessed during bottom‑end work or if end play is out of spec. If the faces are scored or the clearance is excessive, replace the thrust bearing and verify the torque converter and flexplate aren’t imposing abnormal axial loads.