I've always jacked under the back part and never had any slippage, although
I have *never* worked under a car supported by a jack alone, and I position
the axle stands using the jack handle so I can keep clear of the back of the
car. Others have said in the past that jacking under the diff is bad
because of the bending stresses (supporting it in the middle but the weight
is on the ends).
PaulH.
----- Original Message -----
From: Louis Mehr (EML) <Louis.Mehr@eml.ericsson.se>
To: <mgs@autox.team.net>
Sent: Wednesday, January 05, 2000 10:24 AM
Subject: Jacking on the differential - which bit ?
> Good Morning MG World,
>
> This must be a fairly stupid question but here goes anyway ...
>
> I want to jack the entire car up so that I can treat the underside of it.
>
> The front is no problem - I jack the car up on the cross member and place
axle stands under the wishbone pivots (just like I saw in the book "MG
Owneres Survival Guide").
>
> The rear is more awkward.
>
> It seems to be standard practice to jack up the rear of the car on the
diff and then support the car with axle stands.
>
> It's not clear to me though which part of the diff to use the trolley jack
on.
>
> The part at the rear, although it should be stronger, seems awfully
narrow and the car could easily slip off during jacking.
>
> The part to the front is inclined but by jacking here I would guess that
there would be a danger of placing excessive stress on the diff housing.
>
> I think the answer is probably to jack on the rear of the diff with
extreme caution then get the rear on axle stands and then do the front to
minimise risk if the car should fall whilst jacking the rear.
>
> Please confirm.
>
> Thanks
>
> Louis Mehr
> Manchester
> England
> 1971 MGB Roadster LHD California import
>
>
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