Gearbox drain plug

[philw696]

Old one will be going back in with new 'o' ring and plenty of silicone grease applied, the state of the oil also surprised me, very black, not what I was expecting for gearbox oil. Now anybody got a 2004 Gallardo and need a gearbox oil filter? I know of one going cheap!

Have you ever wondered how hard the gearbox works especially if driven as intended

 

[jasst]

Have you ever wondered how hard the gearbox works especially if driven as intended

True, I have probably done about 2k this year, and 80% of those it has been driven hard!!

 

[spn]

Old one will be going back in with new 'o' ring and plenty of silicone grease applied, the state of the oil also surprised me, very black, not what I was expecting for gearbox oil. Now anybody got a 2004 Gallardo and need a gearbox oil filter? I know of one going cheap!

Black oil from a gearbox isn't usual, would suggest excessive heat, do you know if the correct grade was used?

Could be due to the LSD, was there a lot of metal in the oil?

 

[conaero]

When we drop old gear oil it stinks the workshop out...an indicator it’s well overdue.

There is no need to silicone the sump plug in and would advise against it.

 

[TimR]

When we drop old gear oil it stinks the workshop out...an indicator it’s well overdue.

There is no need to silicone the sump plug in and would advise against it.

I think he means a silicon grease Matt..not a sealant ( which acts as a glue...)!
But either way, I’ think Voicey has the right idea when says use a red (rubber )grease...

 

[RobinL]

I think he means a silicon grease Matt..not a sealant ( which acts as a glue...)!
But either way, I’ think Voicey has the right idea when says use a red (rubber )grease...

An off topic but funny on Silicone Grease v Silicone Sealant.

On a North sea Dive vessel. The diving bell c/w 3 divers inside (one was me) has been hauled back to surface from 120m seabed where we had been working for 6 hours. Weather is Force 5 and getting worse.
The diving bell has to traverse the deck, then lower and lock to a transfer hub. (SCV Norlift)
This hub is protected with a steel cover (called the bin lid)
The deck technician had been told to silicone the hub face to protect the steel under the bin lid.

Normal practice was to use MS4 Silicone Grease.
(You can see where this is going!!)

We were not amused by the 45 minute delay hanging on the winch whilst the crew tried prising off the lid. - tech had used 2 tubes of industrial sealant !!!!

Sent from my ONEPLUS A5010 using Tapatalk

 

[Geo]

Here’s a couple of photos of a filter tool that I made. It is an intimate fit on the end of the filter, and incorporates a drill guide for dealing with the inevitable broken retaining screw. Once the screw has been dealt with, it makes rotating the filter without damaging the end easy. Still no guarantees that the filter won’t break in the bore though.

 

[philw696]

Here’s a couple of photos of a filter tool that I made. It is an intimate fit on the end of the filter, and incorporates a drill guide for dealing with the inevitable broken retaining screw. Once the screw has been dealt with, it makes rotating the filter without damaging the end easy. Still no guarantees that the filter won’t break in the bore though.

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Good Work Sir I'm liking that you should make a batch and I will take one please.

 

[TimR]

Here’s a couple of photos of a filter tool that I made. It is an intimate fit on the end of the filter, and incorporates a drill guide for dealing with the inevitable broken retaining screw. Once the screw has been dealt with, it makes rotating the filter without damaging the end easy. Still no guarantees that the filter won’t break in the bore though.

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Spot on....
I'm guessing you had a bad experience with yours when you set about recommissioning the car... First mention of the retaining screw being a bar-steward that Ive come across but it makes sense...! (I'm assuming the gearbox casing is aluminium with steel screw...?)
I wonder, does this exist as a CAD file at all George ?

 

[Geo]

Spot on....
I'm guessing you had a bad experience with yours when you set about recommissioning the car... First mention of the retaining screw being a bar-steward that Ive come across but it makes sense...! (I'm assuming the gearbox casing is aluminium with steel screw...?)
I wonder, does this exist as a CAD file at all George ?

Hi Tim, the small screw was indeed an issue. I’m sure someone before me had tried to remove the screw and stopped just as the sensed the thing was about to break. When I went to unscrew it, the head came off with virtually no pressure applied to it. You are correct, it is a steel screw in an alloy case and that’s why I designed and made the tool. What I didn’t mention was I also made a miniature centre punch that fits the drill guide so you can punch the broken end of the screw. This ensures that the drill has the best chance when starting to cut.

I don’t have a CAD file of the tool, it was just a free hand sketch.

 

[Geo]

Good Work Sir I'm liking that you should make a batch and I will take one please.

Thanks for the compliment Phil, but it’s not something I want to get into making in numbers.

 

[TimR]

I don’t have a CAD file of the tool, it was just a free hand sketch.

Nice work...!

 

[jasst]

I think he means a silicon grease Matt..not a sealant ( which acts as a glue...)!
But either way, I’ think Voicey has the right idea when says use a red (rubber )grease...

Yes silicon grease on the rubber 'o' ring, would never silicone the plug, that will be getting a new copper crush washer, and no need for red rubber grease, silicon grease is fine for lubricating rubber, I should know, its part of what I do for a living

 

[BennyD]

So, what’s your job? Getting old-age dominatrixes into their working clothes? Rather you than me mate.

 

[TimR]

Yes silicon grease on the rubber 'o' ring, would never silicone the plug, that will be getting a new copper crush washer, and no need for red rubber grease, silicon grease is fine for lubricating rubber, I should know, its part of what I do for a living

Sure- silicon grease is no problem. I doubt the O ring is rubber tbh. Probably a synthethised equivalent “rubber”, possibly even viton...?
Its because I’m far from an expert that I am careful what I put where....!

 

[rs48635]

.......sitting at the workshop now. Waiting for the gearbox oil to be refilled. Took over an hour to extract the bloody filter.
Now they are looking for crush washer. I forgot to order these when getting the filter. boo!

 

[paul328]

How many people have successfully removed the old filter intact? I have tried ordering one as a precaution and still waiting for them to get back into stock.
It doesn't appear the old in my car has been changed in about 10 years although only 9000 miles.
The sequence is:
Filter bolt; Screw on filter; remove filter; remaining oil drains?
Forgive the stupid question (s) but it is the same drain hole for the oil and once unscrewed the filter bolt won't allow all the oil to drain?

 

[Zep]

You are pretty close on the sequence, but for me it’s:

Remove drain plug
Remove fill plug (allows air in to drive oil drain
Remove filter bolt
Attempt to remove filter
Swear a bit, have a cup of tea
Remove filter, either in bits or as one part
By the time this has happened, all the oil is already drained
Clean up and refit filter
Replace drain plug
Fill with oil (a pump is very useful here). allow time for level to settle
Replace fill plug
Decide to never do that again.

If it has been out recently they normally come out in one piece. If it’s not moved for 10 years I would prepare for the worst.

The filter is just wire mesh, so the oil will drain through it, albeit slower than if it was out.

 

[conaero]

We carry these plugs on the shelf, they go all the time.

We had a Strad in recently with 700 miles on the clock and that was gone.

If it does go, get a pick tool and turn all the remnants out of the female threads on the gearbox first.

We tighten till it grounds out the just a sixth of a turn then monitor over a couple of days for weeping.

 

[paul328]

We carry these plugs on the shelf, they go all the time.

We had a Strad in recently with 700 miles on the clock and that was gone.

If it does go, get a pick tool and turn all the remnants out of the female threads on the gearbox first.

We tighten till it grounds out the just a sixth of a turn then monitor over a couple of days for weeping.

Hi
Can you PM your business details and if you sell these mail order in the UK?
Thanks