1. Check the condition and reliability of the engine and gearbox mounts.
2. Check the shift lever adjustments.
3. Check the shift axle joint, the tension of the gear selector lever spring latch and both bushing housings.
4. Check the operation of the main shift shaft and shift forks. When disengaging reverse gear, check the operation of the reverse gear engagement lever.
5. Check the condition of the synchronizer teeth and gears.
6. Check the shaft bearings.
7. When assembling the box, adjust the gaps.
Symptom: Increased shift effort.
1. Check the quality of the oil in the gearbox and its level. Top up if necessary.
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2. Lubricate the lever mechanism, check the mechanism adjustments.
3. Check the shift axle joint, the tension of the gear selector lever spring latch and both bushing housings.
4. Drain the oil and check it for metal. If there is metal, it is possible that the gearbox is generally worn out and requires repair.
Symptom: Grinding noise when shifting into gear (the car is stationary).
1. Make sure the clutch is working properly.
2. Determine which gear the grinding noise occurs when the transmission is engaged.
3. Check the quality of the gearbox oil and its level. Top up if necessary.
4. Drain the oil and check it for metal. If there is metal, it is possible that the gearbox is generally worn out and requires repair.
5. Check the condition of the synchronizers and gears.
6. When assembling the box, adjust the gaps.
Symptom: Noise that changes tone when disengaging the clutch (Gearbox in neutral position).
Reason: clutch release bearing.
Symptom: Noise that disappears when the clutch is released (Gearbox in neutral position).
1. Check the quality of the oil in the gearbox and its level. Top up if necessary.
2. Drain the oil and check it for metal. If there is metal, it is possible that the gearbox shaft bearings are worn out and require repair.
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