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Gears do not engage after gearbox O/D refurbishment

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I am guess here, but I feel that the release bearings should be similar in height. Otherwise you may be over pushing the bearing onto the clutch release plate. Not sure what that does to the system, but it would not be right. :cheers: Bob
 
Gents, as Jim said there is no way to adjust the clutch system on a BN6. I changed the release bearing today and put in the gearbox again. While testing the whole system I made the following observation: When I press the clutch and put in a gear, e.g. the fourth, I can turn the flange at the back about a quater of a full,turn, then there is some kind of resistance. When got over the resistance with a lot of power turning the flange gets easier with every portion I turn it. The starting point of the resistance is accompanied with some "clack"-sound most probably in the gearbox.
 
That would not explain the inability to engage any gears with the engine running. Yet you can engage with engine off.
Clacking is something in the gears, synchros, or bearings.
You did not have this with the transmission out?
You changed nothing inside the main gearbox at all?
Reason I ask is I have run into (not Healey) an input shaft bottoming out in the crankshaft pocket when input was changed (easy fix).
 
After some more tests there is another probably cause: the clutch kit is inconsistent. This means that the clutch cover and the clutch plate have incompatible diameters. My understanding is that the clutch cover should have 9'' diameter for a BN6. What is the corresponding diameter of the clutch plate? I know that BN7 and early BJ7 models have 10'' diameter of the cover, and later BJ7 as well as BJ8 models have 9,5''

In the current configuration the clutch kit looks like the attached picture. Can anybody reason from that picture that the clutch plat is too big for the clutch cover?

KupplungHinten_skaliert.jpg
 
In the manwhile I answered the question myself ;-) Diameter of plate is of course 9'' for a 9'' clutch cover. The configuration that has been delivered by the company which refurbished my clutch is a 9'' cover with a 9,5'' plate :-(
 
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Long shot, but what about the spigot bearing in the end of the crankshaft binding on the gearbox input shaft. Shaft burred during gearbox rebuild?
Matthew
 
IMG_0740.jpg


Based on the photo above although it is for a 10" pack (BN7) , the clutch plate has a lot more space to the clutch cover bolt holes than yours is showing. So you found your problem -- too big of a clutch disk for the clutch cover.
 
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