Gearbox issue....

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olympus said:
With the cover off.
And with the gearchange plate inserted along with the external gear change lever
Holding the cover so it don't move along with the gearchange plate to give a resistance, you should be able to select all the gear up and down and observe how the pawl behaves.
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:oops: I don’t understand........

do I need more hands.......
 
JOHNO23 said:
:oops: I don’t understand........

do I need more hands.......
Click to expand...

I think olympus means that "with the cover off" you should be able to observe the action of the ratchet mechanism.
Gearbox issue....
 
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It is easier if someone else holds the cover or very lightly held in a vice, whilst the other person provides the resistance and operates the gears
 
It sound a lot more difficult that it actually is.... the person holding the gear change (ratchet) plate and providing a resistance is in affect the gearbox internal components
When the gears are then selected using the external lever you should see all the gear positions being selected with the pawl against the ratchet plate
 
Mind you, reassembly IS a royal pain in the arse, you need ballerina's fingers to keep everything in place and not moving as you push it all home...
 
JOHNO23 said:
This is a mk3, using the gear-lever isn’t really an option.......
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You could use a mole grip on the splines as they should be hardened but obviously take care not to damage them.
 
JOHNO23 said:
This is a mk3, using the gear-lever isn’t really an option.......
Click to expand...
Use a pair of mole wrench (vice grip tool) around the splines of the input shaft, so is in affect the external foot lever get someone to hold the raised pin on the ratchet plate and then turn the vice grips in both directions and observe the pawl action onto the plate
 
Is the cross shaft adapter (connector) man enough to take mole grips? Might save risking the splines?
 
The amount of leverage needed is very small so pipe pliers or standard pliers would give sufficient purchase... all your doing is expanding the lower spring.. the splines will also be hardened in some way
 
EstuaryBoy said:
Is the cross shaft adapter (connector) man enough to take mole grips? Might save risking the splines?
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With the cover off, then only resistance ought to be the ratchet return and hairpin springs.
 
Before the turn the shaft with the mole grips hold onto the raised pin on the ratchet plate.. this is the one that transmits the movement to the inside of the box.
Now in the second vid you have demonstrated the amount of effort needed to lift the quadrant arm... so the pin must be held to apply a "dummy load" or mimicking the gearbox internal load
twisting the shaft without holding the pin wont work.
You can also see in the first Vid that the pawl is being angled in the correct direction, but without the pin being held the correct operation wont happen
 
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olympus said:
Before the turn the shaft with the mole grips hold onto the raised pin on the ratchet plate.. this is the one that transmits the movement to the inside of the box.
Now in the second vid you have demonstrated the amount of effort needed to lift the quadrant arm... so the pin must be held to apply a "dummy load" or mimicking the gearbox internal load
twisting the shaft without holding the pin wont work.
You can also see in the first Vid that the pawl is being angled in the correct direction, but without the pin being held the correct operation wont happen
Click to expand...
Thanks for the advice. I tried to mimic the gearbox internal load as much as I could. It’s not very easy to hold the pin on the ratchet plate exactly where I moved it to,but it did seem to work reasonably well although not perfectly. I can’t really see what can be wrong as nothing looks far out enough to cause a problem.( it’s incredible that the selection of a gear relies on a 50p spring bent roughly to shape with a pair of pliers) :rolleyes: I guess I will try again tomorrow and hope for better luck............
 
I'm not sure if this has been discussed..is the pawl free to rotate on the pivot?
 
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