Ital live axle oil overfill quantity

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Gridgway
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Ital live axle oil overfill quantity

Hi all, just putting my live axle Caterham back together and need to fill the rear diff.  It has been refurbed with a Quaife ATB fitted so it's going to be empty of oil.

How much does it need?  Do I fill to the filler level then put an amount more in from the breather hole, or just put a certain amount in from there?

The Graham Sykes document says "overfill to the tune of 2-2.5 pints"  I assume that's the total amount rather than the "extra", but I'm not sure!

Cheers

Graham

Jonathan Kay
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Assembly Guides give it as 0.7 L and as 1.0 L.

Fill to the hole or as instructed by the supplier of the diff.

Jonathan

Gridgway
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Thanks Jonathan, but the paper from Graham Sykes, says to overfill which I understand is required in the live axle.  Just confirming what that specifically means.

Cheers Graham

Jonathan Kay
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2.0 Imperial pints = 1.14 L.
2.5 Imperial pints = 1.42 L.

Could you add the document, please.

Jonathan

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Graham:- Ital or English axle?

Stephen

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Gridgway
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It's Ital

rkeywood
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The quantity mentioned is the extra over the normal fill. That takes you pretty much to the breather - the normal way was to take the breather out and simply fill to there. I have the same setup as you and always done this without problem.

Reply to #4 
the Graham Sykes paper is in the Low Flying archive - March '93

Gridgway
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#7 wow, actually pretty much full then!

Jonathan Kay
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"the Graham Sykes paper is in the Low Flying archive - March '93"

Thankyou

"The Ital Axle Debate", includes:

Jonathan

rkeywood
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Reply to #8

TBH I've never measured how much I've used. I'd been racing with the diff for a couple years before the Sykes article was published - the advice I got from the axle builder was to get as much in as I could! Re-reading the article, the pint is the extra over I was thinking of. I'd see how much you can get in the fill hole, then put the extra pint in the breather and see what the total comes to  and where the level is.

Gridgway
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Today I foubd some previous diff oil in the garage in addition to the 2l I bought.  So I had 2.8l in total.  It all went in.  1l to fill up to the filler hole, then another 1.8l in through the breather.

Do we think that's enough even though I could get a little more in?