The Mad Hat Man

Well-Known Member

LZIR Despatch Agent

• Jul 12, 2016

• #1

I was fitting extended breather pipes to a mates disco2 TD5 auto today. was only able to do both axles and transfer box.

Am I correct in thinking that the auto box does not have a breather tube and that there are no wading plug holes?

 

sierrafery

Well-Known Member

• Jul 12, 2016

• #2

About breather the pic will be relevant, about ''wading'' plugs make sure that both nr 17 and 19 are in situ: http://www.allbrit.de/UNI.cfm?PAGE=817530&SPRACHE=EN

 

The Mad Hat Man

Well-Known Member

LZIR Despatch Agent

• Aug 4, 2016

• #3

found the gearbox & transfer box breathers (one was hidden).

cant find the wading plug(s) tho - I have studied the pics above and cant find "17" and "19".
I have taken the following pics from underneath and can only find one hole thatr might be suitable, but it isnt at the bottom of the casting.... ideas?

 

discool

Well-Known Member

• Aug 4, 2016

• #4

Basically, understand why there's a hole in a timing case on engines with a timing belt. or bell housing of a manual gear box.

Auto's don't need a hole therefore no wadding plug required, again there isn't a hole in a timing case if the engine has a timing chain so no plug required. Simples...

 

The Mad Hat Man

Well-Known Member

LZIR Despatch Agent

• Aug 4, 2016

• #5

So what's that threaded hole for then?

 

discool

Well-Known Member

• Aug 4, 2016

• #6

Haven't a clue... All I can think of its part of manufacturing or a facility to aid a inspection/repair, but what ever screw/ plug goes there it is missing, there should not be any open access to the inside, what ever there is up there.
Unfortunately D2 boxes look different from the D1 outside so no point me going to have look at mine.

 

Last edited: Aug 4, 2016

The Mad Hat Man

Well-Known Member

LZIR Despatch Agent

• Aug 4, 2016

• #7

discool said:

Basically, understand why there's a hole in a timing case on engines with a timing belt. or bell housing of a manual gear box.

Auto's don't need a hole therefore no wadding plug required, again there isn't a hole in a timing case if the engine has a timing chain so no plug required. Simples...

Click to expand...

What i cant understand is that wading plugs are designed to block holes that are designed to allow oil to drain from the timing cover and the bellhousing (engine rear oil seal). Surely any oil should be allowed to drain away and, by default, needs to be blocked when wading?

Why do Autos not need to drain away excessive oil in the bellhousing? I can only think it is because the TC is a sealed unit, unlike a clutch assy. Oil on a timing chain will be no problem .

Although i do not know what that tapped hole is for, i cannot think that muddy water in there will help anything. can anyone shed any light on what it could be for?

 

discool

Well-Known Member

• Aug 4, 2016

• #8

Your correct in your reasoning, belts or clutches don't like oil therefore an indication of an iffy oil seal is great hence the drain hole.
Ive seen your question before, in forums but the answer is from manual owners and is always "wading plug".
As u have a photo you could email Ashcroft's with it and ask the question, they are pretty good I believe in replying to questions and you'll get the definitive answer, posterity then everyone who's interested will know.

My experance is RRC and disco, neither needed wadding plugs.