Parts for your 1992 Mitsubishi Pajero-Thrust bearing

1992 Mitsubishi Pajero thrust bearing: what it does, and when to replace it

Based on Mitsubishi’s factory service manual (Group 21—Clutch), the Mitsubishi ASA electronic parts catalogue for NH/NJ series (1991–1996), and aftermarket clutch catalogues from Exedy and NTN/NSK, a 1992 Mitsubishi Pajero fitted with a manual gearbox uses a clutch release bearing (often casually called a thrust bearing). Automatic models don’t have a serviceable clutch release/thrust bearing. The engine itself also has crankshaft thrust bearings, but these are internal to the bottom end and aren’t routine service items. So for a 1992 Pajero with a manual transmission, the thrust/release bearing is absolutely relevant.

On a manual 1992 Pajero, the thrust bearing sits on the clutch fork and presses against the pressure plate’s diaphragm when the clutch pedal is pushed. Its job is simple but critical: it lets the rotating clutch assembly be pushed smoothly and quietly while the fork and hydraulics remain stationary. That keeps pedal effort reasonable, clutch engagement tidy, and driveline wear in check.

For servicing, the smart move is to treat the thrust bearing as a “replace while in there” item. Whenever the gearbox and transfer are out for a clutch, a fresh bearing should go in with the pressure plate and friction disc. Reputable kits from OEM or quality brands will include the release bearing and, where applicable, a spigot/pilot bearing or bush. The bearing is sealed and not designed to be greased, only a tiny smear of high-temp moly grease should be applied to the bearing contact points on the fork and to the gearbox input splines—nowhere near the friction surfaces.

• Common signs of a tired thrust/release bearing:
  • Whirring, chirping, or squeal that changes when the clutch pedal is pressed
  • Rough or notchy pedal feel, or vibration through the pedal
  • Difficult gear engagement that improves when the pedal is pumped

During replacement, check the release fork for cracks, the pivot ball for wear, the clutch fork boot, and the guide tube (if fitted) for scoring. Inspect the pressure plate fingers for uneven wear where the bearing rides. It’s also wise to resurface the flywheel if it shows heat spots, and on these Pajeros—most of which run a hydraulic clutch—bleed the master and slave cylinders and confirm free play and pedal height to factory spec from the service manual.

There’s no set kilometre interval for thrust bearings because it depends on driving style and load, but any time the clutch is out, the bearing should be renewed. Owners who tow, tour off-road, or crawl a lot will benefit from sticking with OEM-quality parts and having a technician torque everything to spec from the workshop manual.

• Popular questions about 1992 Mitsubishi Pajero thrust bearing

Does a 1992 Pajero have a thrust bearing?
Yes—manual-trans models use a clutch release (thrust) bearing as documented in the Mitsubishi workshop manual and parts catalogue. Auto models don’t have a serviceable clutch thrust bearing. The engine also has crankshaft thrust bearings, but those are internal and not part of routine clutch servicing.

What are the symptoms of a worn thrust/release bearing on a 1992 Pajero?
Tell-tale signs include a whirring or chirp that appears or disappears when the clutch pedal is pressed, a rough or vibrating pedal, and occasional difficulty selecting gears. If noise changes with pedal movement, the release bearing is a prime suspect.

Should the thrust bearing be replaced every time the clutch is done?
Absolutely. The gearbox has to come out to access it, so the best practice is to replace the release bearing along with the clutch disc and pressure plate, and to check the fork, pivot, guide tube, and pilot bearing/bush at the same time.