Thanks for the info. I stored them in a cardboard box wrapped in paper during the restoration of the box.
But are you 100% sure that you heated the flanges to 170-175 degree C?
The Workshop Manual says that the flanges should be heated to approx. 120 dgr. C and
not more than 140 dgr. C.
One problem with sliding the hot flanges all the way in is that you will push a heated flange into the two rubber seal rings. Atleast the outer one. NBR can handle around 100-110 dgr C max. according to the specs, but that might be under long use?
There is a note in the Workshop Manual that says that the heated flange should be pushed onto the shaft just before it reaches the seal ring. Then let the flange cool off before continuing into the seal ring.
Problem is that if you follow this procedure and stop before tuching the radial seal. There will not be any threads visible for the nut to thread onto? Therefor the flange has to be pressed the last bit, wich requires opening the TC up and supporting the other side of the shaft to not damage the alloy housing.
Or can the seal rings handle 120 dgr. C without problems?
There must be a reason to not heat the flanges more though. (>140 C)
Personally I feel that there is a step missing between step 49 and 50 in the WSM.