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Re: Oiling trunnions + jacking up

To: Richard B Gosling <Gosling_Richard_B@perkins.com>
Subject: Re: Oiling trunnions + jacking up
From: "T. .R. Dafforn" <td214@cam.ac.uk>
Date: Wed, 07 Feb 2001 12:07:18 +0000
Hi All,
Trunnions on my spit have had the unfortunate DPO treatment with grease rather
than oil...
Tried using a grease gun to force oil in to displace the grease, no luck..
So I guess is dismantling time...
Is it worth cleaing the trunnions and reusing?
or should I just fit new ones?
If I fit new ones, should I go for original satnpart ones if I can?
Cheers
Tim
Richard B Gosling wrote:

> John,
>
> You do not need any sort of special attachment to your grease gun to use oil 
>in
>  it - just fill it with oil and use it just the same.  A little may leak out
>  where it clips to the nipple, but not a lot, and no more than the amount of
>  grease that ususally escapes when you do this sort of job.  Oil, being
>  thinner, may have a better chance of squeezing out of the sides of the joint 
>-
>  but, being thinner, it flows into the trunnion much more easily than grease,
>  so you don't need to put so much load on the grease gun handle, so there is
>  less pressure trying to force the oil round the edges of the nipple.
>
> I would advise you to get a new grease gun for oiling trunnions - you don't
>  want to have keep emptying and cleaning your grease gun every time you swap
>  between greasing and oiling.  I picked up the cheapest one in Halfords for a
>  very few quid and it has worked fine.
>
> You can jack up the whole of the rear of the car.  However, I would advise
>  placing the jack under the rear cross-member of the chassis, rather than the
>  differential - I have done this many times.  Remember to chock the front
>  wheels!!!  This is less important if you have a trolley jack, but you should
>  really still do it.
>
> Richard & Daffy

--
Tim Dafforn
University of Cambridge
Structural Medicine Unit
Cambridge Institute for Medical Research
Wellcome Trust Centre for Molecular Mechanisms of Disease
Hills Rd, Cambridge CB2 2XY.
UK
Tel. (01223) 336829
Fax. (01223) 336827
http://smokeroom.cimr.cam.ac.uk/

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