Manual 6-Speed Gearbox Input and Output Shaft Bearing Wear
SeriousGearbox & TransmissionThe 6-speed manual gearbox fitted across 1.6 and 1.8 petrol as well as 2.0 diesel models is susceptible to premature bearing wear on the main input and output shafts. Sub-standard case-hardening on the steel bearing races causes surface pitting, which produces an audible whining noise that rises in pitch with vehicle speed in 5th and 6th gear. If ignored, the bearing collapses completely, puncturing the transmission casing and destroying gear gearsets.
High-pitched mechanical whining noise noticeable in 5th and 6th gears at 50 to 70 mph, Low-frequency rumbling noise heard when idling in neutral that disappears when pressing the clutch pedal, Vibration felt through the gear lever when accelerating or lifting off the throttle on the motorway, Difficulty engaging 1st and reverse gears when the gearbox is cold
- Drive the vehicle on a dual carriageway at 60 mph in 6th gear and listen for transmission whine under light throttle
- Depress and release the clutch pedal several times while idling in neutral to listen for input bearing rumble
- Inspect the gearbox casing underneath for oil weeping around the driveshaft oil seals