Pinion Seal? Piece of cake....
Put a pair of jackstands under the body, ( not the R. Axle) so the
rear hangs on the leaf springs and droops down a bit. disconnect the Rear
driveshaft Ujoint, put another jackstand ( a tall one) under the
driveshaft to get it up out of the way. The pinion's flange has a cotter
pin, remove it. I don't remember the exact size of the pinion nut, but
it's around 1-1/8" or so. Set the E-Brake, and give the nut a twist. The
pinion flange is not on a tapered spline, so generally heroic measures are
not needed to pull it off. ( it's a straight spline) Once you've cleaned
up the gook, ( taking care to keep it out of the bearing....) you'll see
the pinion seal. It's made of fairly cheesy steel, with a felt ring (
possibly rubber on a TR4??) get a couple of your larger screwdrivers and
prying devices, and have at it. Be sure not to damage the splines on the
pinion shaft, and don't mangle the metal lip on the diff housing that
captures the pinion seal. You'll have to use a little elbow grease and
perhaps even a few expletives, but it should come out without any real
agony. Clean the ID surfaces of the seal's mounting bore, and tap in
the new seal, preferably using the tool of your choice that will not
deform the seal. Nothing fancy. Next, carefully examine the pinion
flange in the area where the seal normally rides.
If it is badly grooved, it might be time for a Speedi-sleeve ( basically a
thin metal tube that 'replaces' the worn surface), but I've always been
able to clean up the surface with some scotchbrite or a bit of 400 grit
wet-or-dry paper with some light oil. Reinstall the flange- it will take
a light effort to push through the seal- add the pinion nut, (torque to
??ft/lbs?) the cotter pin and the driveshaft. It is a good idea to use
fresh nyloks or lockwashers on the driveshaft bolts, or at a minimum clean
them up real well and tighten to spec. Probably a good time for fresh Diff
lube, grease the U-joint and you're done. ( I think....) I did this
job on my 3A this spring, took about 2 hours. Biggest part of the job
was scraping the Eisenhower Dirt off the underside.... It had been
leaking for decades!
59 3A TS36967
Russ Locke <firstname.lastname@example.org>
Sent by: email@example.com
09/23/02 08:53 PM
Please respond to Russ Locke
Subject: Pinion Seal
Hello from a newbie TR4 owner. (Newbie to this list. I've owned two
other 4s, one a TR4A IRS, both many years ago.)
I just purchased a '63 that may be a '64 (another story) TR4 that has
a great body but needs a bit of work elsewhere. The PPO or someone
replaced some of the interior with TR4A stuff so I'm slowly getting
it back right.
I'm about to attempt to replace the pinion seal on my '64 TR4.
Anything special I should know? The diff is leaking pretty good but
is ok in all other ways (I think/hope)so don't want to pull it just
to do the seal.
San Antonio, TX
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