Yesterday there was a post expressing concern that replacing the diff
seals on a TR6 may not be as straightforward as Bentley suggests. In
fact, according to TRF (?) there is risk of damaging the diff by
altering the tolerances of the internal parts while replacing the seals
(I think the original poster asked only about the pinion seal and did
not mention the inner axle seals). And that the selas hsould not be
touched until a full rebuild is undertaken.
I have seen no replies to this post. Since I was also planning on
replacing the seals (pinion _and_ inner axle) on my diff this winter, I
am very alarmed by this suggestion. Is the concern valid? Or can one
replace the seals without disrupting the parts which rely on the close
tolerances?
Could someone with knowledge of this topic please educate the rest of
us?
Peter,
I did an overhaul on my TR6's diff. The back and forth tolerance of the
pinion are adjusted using shims in two places:
between the big bearing and the pinion gear
between the front bearing and the long spacer
If you remove the front seal, neither of the two should be distrubed. Even
if you removed the front bearing, as long as you kept
the shims, all should be well. Once you torque that pinion nut down (it
takes about 90 -120 ft pounds) all components should
snug up just fine.
My recommendation would be to trust what Bentley says in regards to
replaceing the front seal.
Re the inner seals. These came out quite easy. I I had to do was remove
the 4 nuts that held the seal cover, along with the
little axle, to the diff case. No press was needed. It was a simple hand
tool job.
Good luck,
Dave
San Diego,
1970 TR6 CP51649
|