steve_sides@gilbarco.com (Steve Sides) wrote :
>>>I'm considering an overhaul of a Spit diff and am looking for the special
tools. Specifically, the case spreader and the guage to measure the pinion
height. Anyone know where these might be available?<<<<
Steve
I am rebuildinf my diff (Spit MK3)
I posted some days ago a question to the list : (Help : Rebuilding diff), to try
to locate a source for diff parts, especially adjusting washers, but have no
answer, except from Kris Cotton, Australia, who "went to a diff repair shop
(English diff, Italian worker, & Japanese SHIMS in Australia)"...
I have only "old" cars, and my Spitfire is the most often driven.. So I'm trying
to fix it before next weekend. I think I'll go to the "International
Spitfire/GT6 Weekend", in Holland, around 500 European Spitfires in the same
leisure park.. (600 km from home)
To be short, I began two weeks ago and I am now waiting for parts (from various
suppliers in UK). Most needed are the planet washers (copper, spherical washers,
9 sizes "available"). I already have all bearings, oil seals.. What I discovered
is that there is two types of diff *during* MK3 production. Before & After
FC120000, strongest after. Bigger output shafts/bearing, bigger sun/planet
gear(and their washers/shims) and different diff carrier. I had ordered wrong
washers...
You will not need the spreader to dismantle the (used) carrier from the casing.
But It will theorically be necessary to use it to refit the carrier, because of
the new washers, to obtain the nominal pre-load of the carrier bearings.. I
don't know yet how I will do.
Most difficult was to extract all bearings (carrier, input pinion). Without
*appropriate* tools (big hammer, etc ;-), good luck !
I'm planning to avoid the precision guage by testing various shims and use the
"marking the teeth" technique. You paint the crownwheel teeth, move gear in mesh
with the input pinion and then look exactly *where* are marked the teeth.
(ideally in the middle of tooth's side).
The question now is : How those who sell to us rebuilded diff are *really*
proceeding ?
Has someone ever *seen* the infamous spreader Churchill S101 ?
Francois Demont 100304.2046@compuserve.com
Spitfire MK3, 1968, valencia blue, every day car
http://ourworld.compuserve.com/homepages/spitfire
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