David Hooper
New member
Strange one at Donny on Sunday. Di was driving
came down from 4th to 3rd then around Redgate, went for 4th again but stuck in 3rd and gearlever all over the place.
As I'd had the box out to replace the mount, I thought it was down to me. Not done up the bolt on the selector shaft or the gear lever rod tight enough.
Got it home at lunch, jacked up and could see the rod OK and the selector on tight but the rod was just sliding back and forth through the bush.
There is a over and under polybush in which, for those who have done the job will know what I mean, carries a shaft which attaches to the gear change rod on top, the over bit, and attaches to the selector shaft, the under bit, which changes gear.
At the end of the shaft is a welded on extension which connects to the 'box on an adjustment rod for setting up the angle of the gearlever in the car. That, welded on the end, pulls forward when you select 2nd, 4th, 6th.
The polybush and shaft is a complete replacement part from Porsche the reason being new shaft, new bush, so eliminates any wear on both at once.
It comes assembled from Porsche with a circlip holding it all together to so that the shaft stays where it should in the polybush so you can select the gear of choice. That does the push back when you go for 1st, 3rd, 5th.
That circlip had come out of it's groove and slid down the shaft when selcting 3rd so shoving the gear rod all the way back so when going for 4th not enough length or leverage to get it.
After a sandwich to let it all cool down a bit - very hot - I managed to slide the circlip down into it's groove while Di held the gearlever full forward. The circlip is not exactly a very tight fit but it lasted OK for the rest of the day.
So it was either not fitted correctly when assembled so down to me for not noticing on fitting or, a weak circlip. I shall be removing it on return from LeMans and either wiring it through the holes or maybe a bigger safety fix by drilling the shaft and fitting a pin.
So, if you do the replacement, check that circlip is in it's groove properly and that it's tight in there.
Cheers
Dave![[FONT=verdana,geneva"]](/forum/styles/default/pcgb/space.gif ". [FONT=verdana,geneva\"]")
As I'd had the box out to replace the mount, I thought it was down to me. Not done up the bolt on the selector shaft or the gear lever rod tight enough.
Got it home at lunch, jacked up and could see the rod OK and the selector on tight but the rod was just sliding back and forth through the bush.
There is a over and under polybush in which, for those who have done the job will know what I mean, carries a shaft which attaches to the gear change rod on top, the over bit, and attaches to the selector shaft, the under bit, which changes gear.
At the end of the shaft is a welded on extension which connects to the 'box on an adjustment rod for setting up the angle of the gearlever in the car. That, welded on the end, pulls forward when you select 2nd, 4th, 6th.
The polybush and shaft is a complete replacement part from Porsche the reason being new shaft, new bush, so eliminates any wear on both at once.
It comes assembled from Porsche with a circlip holding it all together to so that the shaft stays where it should in the polybush so you can select the gear of choice. That does the push back when you go for 1st, 3rd, 5th.
That circlip had come out of it's groove and slid down the shaft when selcting 3rd so shoving the gear rod all the way back so when going for 4th not enough length or leverage to get it.
After a sandwich to let it all cool down a bit - very hot - I managed to slide the circlip down into it's groove while Di held the gearlever full forward. The circlip is not exactly a very tight fit but it lasted OK for the rest of the day.
So it was either not fitted correctly when assembled so down to me for not noticing on fitting or, a weak circlip. I shall be removing it on return from LeMans and either wiring it through the holes or maybe a bigger safety fix by drilling the shaft and fitting a pin.
So, if you do the replacement, check that circlip is in it's groove properly and that it's tight in there.
Cheers
Dave
