People Hi,
the transfer box and rear diff pinion seals may leak just because they are
LR seals (and those tend to leak anyway)
The universal joint at the rear type of propshaft is the type used on very
first version of Discovery vehicles (1989 up to 1994 model years) and this
was replaced with the rubber coupling type in order to reduce the NVH
related problems (Noise, Vibration, Harshness)
It is extremely succesful at doing so and if I were you I would NOT replace
it.
In fact I have replaced a universal type propshaft with a rubber coupling
one on my 1993 evented ex Camel Trophy Discovery 200Tdi when I also replaced
the manual gearbox and LT230 transfer box with an autobox and viscous
coupling transfer box from a Range Rover Classic back in 1998.
I still have absolutely no problem with the rubber coupling propshaft BUT,
this type of propshaft (rubber coupling) has a tendency to split the
coupling when it is forced to operate at increased angles (ie when you
increase the suspension travel or you make use of the full suspension travel
for prolonged time and apply much torque to it)
Replacing the rubber coupling type with a UJ type is not a cure though since
even the UJ ones do not work well if you increase the suspension height from
1" upwards. Problems are more apparent with suspension lifts of 2" and more
though.
If I were you I would also check the proper balancing of the propshaft. If
the balancing is upset it creates a lot of unwanted vibration and this
causes problems to the universal joints and to the transfer box and rear
diff seals and components.
An easy way (and tested by myself as succesful) is to use the active
balancers easily found in the USA. I have used those on a good friend's
Discovery with a +2" suspension lift which has caused problems to his
transfer box which had to be replaced. After fitting those active balancers
the vibrations problem stopped and it is now almost a year that he is using
his car without any more problems from the transfer box or with the rubber
coupling on his propshaft.
If you need more information for the active balancers please let me know.
Take care
Pantelis Giamarellos
LAND ROVER CLUB OF GREECE
"Jack Kerouac" <
[email protected]> wrote in message
news:Z_Rod.5569$VG.5017@trndny07...
>
> "news.verizon.net" <[email protected]> wrote in message
> news:kYPod.11413$Vy.9188@trndny06...
> > Does your transfer case leak because I wonder if it is caused by the
drive
> > shaft. .....mine has the rubber thing I think the seal is leaking.
>
> No, the transfer box is not leaking. Although...the rear pinion is
leaking.
>
>
