Parts for your 2003 Mitsubishi Pajero-Thrust bearing

2003 Mitsubishi Pajero thrust-bearing: what it is, and when it matters

Based on technical references like the Mitsubishi Motors Pajero/Montero NM–NP Workshop Manual (2000–2006) and the Mitsubishi ASA electronic parts catalogue, a thrust-bearing is relevant to a 2003 Mitsubishi Pajero in two places: the engine uses crankshaft thrust bearings to control end-float, and manual-transmission models use a clutch release (thrust) bearing. Automatic-transmission Pajeros don’t have a clutch release bearing, as they use a torque converter instead. Clutch service procedures in the factory manual list inspection and replacement of the release/thrust bearing during clutch work, and engine overhaul procedures specify crankshaft thrust bearing checks.

For a 2003 Pajero with a manual gearbox, the thrust-bearing (often called the clutch release bearing) sits on the gearbox input housing and presses on the clutch pressure plate fingers when the pedal’s pushed. Its job is simple but critical: let the rotating clutch assembly be disengaged smoothly while the actuating hardware stays nice and still. When it wears, you’ll often hear a whirring, chirp, or squeal with the pedal depressed, feel a gritty pedal, or notice notchy gear changes.

There’s no fixed kilometre interval to replace a release bearing. It’s a sealed, lubricated-for-life part, and it’s normally renewed whenever the clutch is replaced. If there’s noise with the pedal down, or the bearing feels rough when spun by hand during an inspection, it’s time. Given the labour to pull the gearbox, most techs in Australia and New Zealand recommend fitting a complete clutch kit (pressure plate, friction disc, release bearing) rather than just the bearing.

Good practice while the box is out:

• Replace the pilot/spigot bearing in the crank.
• Inspect the clutch fork, pivot ball, and the guide tube the bearing slides on, renew if worn.
• Check and, if needed, replace the rear main seal and gearbox input shaft seal.
• Bleed or renew the clutch fluid and inspect the slave and master cylinders for leaks.

Driving style makes a difference. Lots of towing, heavy off‑road work, water crossings, or resting a foot on the pedal can shorten bearing life. Keeping the pedal free of pressure when cruising and avoiding slipping the clutch on climbs helps. If the vehicle has an automatic transmission, there’s no clutch thrust-bearing to service, any driveline noise under load will be unrelated to a release bearing. Separately, all engines use crankshaft thrust bearings, excessive crank end-float is uncommon but, if suspected (clutch engagement changing with pedal load, odd noises, or measurable end-play), it’s an engine-internal repair guided by the workshop manual.

Popular questions about 2003 Mitsubishi Pajero thrust-bearings

Does a 2003 Pajero have a thrust-bearing?
Yes. Every engine has crankshaft thrust bearings. If it’s a manual, it also has a clutch release (thrust) bearing. Automatics don’t use a clutch release bearing because they run a torque converter instead.

What are the symptoms of a failing clutch thrust-bearing?
Common signs are a whirring, chirping, or squealing noise when the clutch pedal is pressed, a rough or heavy pedal feel, and notchy gear engagement. If the noise disappears when the pedal is released, the release bearing is a prime suspect.

Should the thrust-bearing be replaced on its own?
It can be, but because gearbox removal is the big cost, most workshops replace the full clutch kit (disc, pressure plate, release bearing) at the same time. They’ll also check the pilot bearing, fork, pivot, guide tube, and nearby seals to avoid doing the job twice.