Table of contents: The box makes noise in neutral…🠇 The box is noisy when in gear 🠇 The gearbox makes noise only in one…🠇 The transmission shifts out of gear…🠇 Poor operation of synchronizers 🠇 It's difficult to shift gears 🠇
Note: Be very careful not to split equally for reasons that are no more than minor inconveniences. "Noisy" gearboxes or gearboxes whose synchronizers fail during rapid gear shifting can still serve in this condition for quite a long time. To eliminate noise, a worn-out gearbox usually has to be completely disassembled, since installing old and new parts together will still not eliminate the noise. Therefore, the decision to overhaul the box should be taken with great caution.
The box makes noise in neutral position
1. When the transmission is in neutral and the engine is running, the drive shaft and 4 gears rotate in the transmission. All of them rotate on standard bushings, with the exception of one end of the drive shaft (from the side of the timing mechanism housing), which rotates in a ball bearing. Noise may be caused by excessive wear on gear teeth or bushings/ball bearings, as well as wear on retaining rings and washers. Inspect all the parts listed above and replace them if necessary.
The box is noisy when in gear
2. When the gearbox is in gear, in addition to the parts listed above, the secondary shaft, its two ball bearings and one roller bearing, the differential and (when reversing) reverse intermediate gear. Inspect all parts listed in paragraphs 1 and 2 and find and eliminate the cause of the noise.
The gearbox makes noise only in one gear
3. Noise from the transmission in one specific gear may be caused by any of the reasons listed above, however, when inspecting, special attention should be paid to those gears or gear blocks that relate to this gear.
The transmission shifts out of gear when accelerating or engine braking
4. The cause of this is usually wear of the forks or grooves on the synchronizers, as well as wear of the synchronizer hubs or cone rings, wear of the grooves under the locking rods or excessive axial movement of the secondary shaft. In any case, you will have to disassemble the box for inspection.
Poor operation of synchronizers
5. Disassemble the gearbox and inspect the synchronizers for excessive wear. Before disassembling the gearbox, you can make gear shifting easier by squeezing the clutch twice.
It's difficult to shift gears
- a. damage or misalignment of the gear shift lever mechanism
- b. wear of blockers and (or) gear locks
- c. failure of the needle bearing in the drive gear located on the crankshaft (see chapter 5)
Original text is located at (PEUGEOTBOOK)