Parts for your 1999 Toyota Crown-Thrust bearing

1999 Toyota Crown Thrust Bearing

Yes, a thrust bearing is relevant to the 1999 Toyota Crown. Toyota’s factory engine manuals for the 1JZ/2JZ and 1G-FE engines used in the S170-series Crown specify thrust washers integrated at the crankshaft’s centre main journal to control end float, and Toyota’s Electronic Parts Catalogue lists these as part of the main bearing set. For Crowns with the common A340-series automatic transmission, industry manuals (e.g., ATSG A340E/A341E) also detail internal thrust bearings and washers inside the transmission, though these aren’t routine service items. A clutch release (throw-out) bearing is only present on rare manual variants.

On the engine, the thrust bearing’s job is to keep the crankshaft from shuffling forward and back. It takes axial loads from the torque converter or clutch, as well as incidental thrust from accessory drives. Keeping end float in check preserves oil film integrity, maintains correct gear and chain alignment, and prevents dramas like crank-walk that can chew up blocks or damage the crank.

This isn’t a typical “every 10,000 km” service item. In normal use, the thrust bearing lasts a long time. It’s inspected during bottom-end work or when there are symptoms such as noticeable forward–backward movement at the crank pulley, metallic rubbing under load, sudden clutch pedal engagement changes (manual only), or odd converter noises on autos. Measuring crank end play with a dial indicator during a rebuild or if symptoms show up is the go-to check. If it’s out of spec, the thrust faces are renewed with the main bearing set, and the crank’s thrust surfaces are inspected and linished or ground if needed.

Good oil and regular changes help, as clean lubrication protects the thrust faces. On manual cars, riding the clutch or heavy clamping loads can accelerate wear, on autos, converter issues or misalignment can add axial load. Replacement is an engine-out or sump-off/main-cap-off job best left to a workshop: align the thrust halves carefully, torque the mains to spec, verify end float, and confirm oil clearance on the rest of the bearings. When sorted properly, the 1999 Crown’s bottom end stays smooth and happy for many more kilometres.

• Key signs to watch: visible crank pulley fore–aft movement, abnormal rubbing noises, engagement feel changes (manual), metal in oil after bottom-end contact.
• Best practice at overhaul: replace main bearings as a set, check crank thrust surfaces, and confirm end float with a dial gauge.

Popular questions about 1999 Toyota Crown thrust bearings

Does every 1999 Toyota Crown have a thrust bearing?
Yes. All engines fitted to the S170 Crown have an engine crankshaft thrust bearing (thrust washers at the centre main). Most Crowns are automatic, which also use internal transmission thrust bearings not serviced during routine maintenance. A clutch release bearing only applies if the car is a manual.

What are the symptoms of a worn thrust bearing on a 1999 Crown?
Common clues include noticeable in–out movement at the crank pulley, scraping or rubbing noises under load, and—on manuals—sudden changes in clutch engagement point or stalling when the pedal is pressed. Any of these warrant an end-float check with a dial gauge and a look at the bottom end.

When should the thrust bearing be replaced?
There’s no fixed interval. It’s typically replaced during an engine rebuild or if end float is out of spec. The job involves removing the sump and main caps (or pulling the engine), fitting new main bearings with thrust faces, and verifying clearances to factory specifications.