[ROVERNET - UK] SD1 Gearbox

[Paul Smith]

Why does towing it wreck it??  The oil pump isn't turning?  What about BW35s in 2000s that have a rear oil pump?

PVS

-----Original Message-----
From: rovernet-bounces at lyris.ccdata.com
[mailto:rovernet-bounces at lyris.ccdata.com]On Behalf Of Kent Kinard
Sent: Thursday, 1 February 2007 12:44 pm
To: rovernet at lyris.ccdata.com
Subject: Re: [ROVERNET - UK] SD1 Gearbox


Hi Nick,
I've never done it.  RPI developed this replacement many 
years ago, but I'm not sure they even supply the parts any 
more.  I think it requires spliting the case and removing 
the first motion gear and doing some machining to it in 
order to fit a roller bearing to the front end of the 
mainshaft.  I'v never really seen this done, only heard 
about it.

If the LT77 is not damaged, simply replacing the bearings, 
shimming properly according to the shop manual, and 
changing the trans fluid often should be good for 80k 
miles.  Swarf is the enemy of these transmissions.  It 
eats up or jams the oil pump.  Also, even a few miles of 
towing with the rear wheels on the ground is enough to 
destroy the trans, so always disconnect the driveshaft or 
tow it like you would an automatic with the front wheel on 
the ground.

I don't think it's a good idea to just swap in an unknown 
transmission without a teardown and inspection.

Roverly,
Kent K.

On Wed, 31 Jan 2007 17:00:33 -0600
  "Nick and Laurie Hand" <flynp170 at cablelynx.com> wrote:
> My SD1 gearbox [5speed] has a bearing noise and I intend 
>to replace it with
> one from my parts car. I read this on RPi engineering 
>web site "Having
> supplied many reconditioned units in the past, we 
>developed a replacement
> for this taper bearing, using a heavy duty non-tapered 
>one. This can be
> fitted with very little fuss and ensures a more precise 
>allignment for many
> many thousands of miles."   Anyone replaced the front 
>bearing with a non
> taper one? Thanks Nick
> 
> 
> _______________________________________________
> rovernet mailing list
> rovernet at lyris.ccdata.com
> To unsubscribe, go to this web page, look near the 
>bottom and follow instructions:
> http://mailman.nipltd.com/mailman/listinfo/rovernet
> Back-up list and photos at:
> http://autos.groups.yahoo.com/group/Rover_net/


_______________________________________________
rovernet mailing list
rovernet at lyris.ccdata.com
To unsubscribe, go to this web page, look near the bottom and follow instructions:
http://mailman.nipltd.com/mailman/listinfo/rovernet
Back-up list and photos at:
http://autos.groups.yahoo.com/group/Rover_net/