Pagoda SL Group
W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: BobWeststrate on September 17, 2024, 19:26:49
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Hi all,
I have been reading a lot of stories on this forum and have learned so much from you already. Unfortunately I have come across a problem that I could not find a solution for on this forum yet. A few years back I have overhauled the manual gearbox (G72) but skipped the top cover and the shifting forks. I have renewed the master and slave cilinders and the pressure plate/disk. Now the following issue occured:
my first and second gear are hard to engage and even harder to disengage. Only when the car is Idle is when I can change gears. Reverse is troublesome too but not so much. Third and forth are enaging and disengaging fine.
To fix the problem I did the following:
- Renewed all the bushing from the shifting rods
- Flushed the brake fluid in the clutch system (bled the system too). I noticed that the brake fluid was pretty much black when it came out. Does this mean that seals in the master / slave cilinder have gone bad?
After doing the above the problem persisted so I removed the gearbox and opened the topcover. I noticed that the Shifting fork responsible for gear 1 and 2 has a lot of wear on it. This results in the shift fork coming very close to touching the gear. After removing the rods I saw that the selector plate had a lot of wear on it too. The two squares are damaged (see pictures).
Questions I have:
- I found online that a new plate costs close to 500 dollars, do you guys have any suggestions for other places?
- Do you think that fixing this will resolve my issues with the gearbox?
- Why does the shifting fork have so much wear on it? Is the shimming incorrect in the topcover? If so, Is there a manual on how to shim it correctly?
Thank you in advance for your answers to my many questions!
Bob
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As a full member, take a look at Pagoda Notes Volume 1 and 2, this is a review of the rebuild one of our members did on a four-speed tranny.
Go to the Technical Manual and scroll down to find the Premium Content piece for the past issues of Pagoda Notes.
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Hi Jonny,
Thank you for your fast response. I just read both volumes and I found that a loose slotted nut might cause some problems, I will look into that. However I could not find anything on the shifting forks and selector plate. Do you have any ideas on that?
Thanks!
Bob
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Most issues are a result of the loose slotted nut and the resulting damage and mis-alignment of the upper shaft key. The factory has a special set-up fixture for the exact adjustment of the upper shift cover forks.
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Thanks! I will get on it!