DRIVELINE

SUBJECT: Shaft & Support Bearings

Date: 15 Oct 1997
From: Phil Lacy / inventory@ironbark.forest.nsw.gov.au (Resource Assessment Team)

I stripped it down last night and found that the 'diff' seems just fine. No
noise or lumpiness when I spun it and no crap in the oil. Upon removal of
the swing arm, I tipped the remainder of the support bearing into my hand.
This added up to half a dozen ball bearings and some bits of metal. The
outer case of the bearing was still in there.

(bits snipped)

He suggested that I take the drive shaft somewhere and get it checked for being true.
I imagine that if there is a slight bend in it, it would soon make mince meat
of any bearing. Mind you, I can't believe that something like this would
bend readily, anyone heard of this happening before? There's always the
chance of a faulty bearing?

(bits snipped)

I also asked Richard why the splines on the drive shaft were quite dry and
not, as I would have thought, covered with grease. He explained that these
really only need a dry lubricant on them so he uses graphite powder.

SUBJECT: Sport Final Drive Breather

Date: Thu, 5 Aug 1999 01:43:49 -0700 (PDT)
From: Andrew Henzell <ahenzell@yahoo.com>

Sport and Daytona final drives are not vented to the atmosphere at all. This makes them suceptable to popped seals due to the build up of presure in the houseing when they get hot, this has happened to my carbied sport once so far.

The fix is to fit a breather to the final drive. To do this, drill and tap the top [filler] plug of the final drive, the one between the torque rod mounts, to take a fitting that in turn will take a hose [can be small, like 3mm] up to under the tank.

I used a 1/8 British Standard Pipe fastening [BSPF, a parrallel thread] tap, tapped all the way through.

I then used a push to insert right angle fitting [a straight fitting comes too close to the spherical bearing on the torque arm] that takes 5 mm nylon air line.

As the top plug needs to be removed to fill the final drive with oil, a fitting small enough to turn within the plates is needed, or one that will swivel as the plug is unscrewed.

This is in turn zip tied to the torque arm and ultimatly ends up somewhere under the tank.

Andrew Henzell