PRE-RELEASE
Operation
| Operation |
Between the selector shaft (1) in the gearbox and the gear lever is a cable and lever arrangement which transfers torque and transverse shearing force from gear lever to selector shaft.
Two levers are located on the gearcase, which are bearing mounted in the gearcase with loose needles, one is for turning the selector shaft so that the chosen gear and with it the gear selector both move into the correct position, and one is for the implementation of the gearchange itself by means of shearing then pulling the selector shaft which in turn acts upon the chosen selector fork and universal joint driver. Both of the cables are attached to the lever by means of ball sockets and then run through the bulkhead partition via a rubber lead-through in to the gear lever housing. The cable design completely eliminates movements and vibrations from the drive line unit to gear lever and body. See Selector lever.
| 1. |
Selector shaft
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| 2. |
Selector lever arm, push then pull
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| 3. |
Selector lever arm, turning
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In order to select reverse gear (R) a release button below the gear lever knob must be lifted. In neutral the gear lever tries to take a balanced position directly in front of 3rd and 4th gear due to the spring action inside the gearbox. This is so that the driver is able to simply orient himself within the gearchange pattern and incorrect gearchanges are avoided. All forward gear selector shafts are bearing mounted in teflon bushings, in order to obtain the minimum possible friction and reach low shifting forces with perfect shifting sensitivity.
In order to prevent engaging more than one gear at the same time, the gearbox is equipped with a selector interlock device. The selector interlock device mainly comprises a rotatable bar which runs in the groove in the gear selectors. There is an socket in the bar which only permits activation of one gear at a time.
| 1. |
Bearing bracket
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| 2. |
Selector fork, 1-2
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| 3. |
Selector fork, 3-4
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| 4. |
Interlock bar
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| 5. |
Gear selector
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| 6. |
Selector shaft
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| 7. |
Rotating segment
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