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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5745

United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
TD5 rear diff filler plug
How far in should the rear diff filler plug go to be tight? I put the filler plug back in, but it felt like, if I kept going it would fall into the diff. I stopped at the plug being flush with the diff. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #229740 22nd Apr 2013 9:21pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5424

2006 Defender 110 Td5 USW Zermatt Silver
They are all different.

They are on a tapered thread, so if you did keep tightening, it would fall in. They do not need to be over tight, just nipped up. If you are convinced yours needs to be tighter, but may fall in, put some PTFE on it.

Andy
Post #229748 22nd Apr 2013 9:51pm
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Killer90
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Member Since: 09 Oct 2011
Location: Hertfordshire
Posts: 6478

United Kingdom 2016 Defender 110 Puma 2.2 XS DCPU Fuji White
There not under no pressure at all so as Andy said they don't have to be wound in with a air gun Laughing do it so its flush with the diff casing and just so you get a nice little nip on it Wink Ive seen a few now which are wound in but a screwdriver soon gets it straight again Wink CSK Automotive
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Post #229752 22nd Apr 2013 10:04pm
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geobloke



Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4410

United Kingdom 
Usually the plug sits just proud of the diff casing to flush with the diff casing. If however your Defender has been serviced by a Neanderthal with biceps bigger than Schwarzeneggers thighs then it is definitely possible that the plug has been overtightened.

If the plug is loose then there are a few things you can do to make it stay in place, PTFE tape works fairly well, thread lock (albeit a small amount) also works well and then there is a dab of silicone gasket sealer which is really just a stop gap in an emergency. All of the above require the threads to be as degreased as possible.
Post #229821 23rd Apr 2013 9:30am
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uncas



Member Since: 22 Nov 2012
Location: Wentworth near Rotherham
Posts: 340

United Kingdom 
If it looks as though the plug is going to screw all the way through the Diff pn I'd be taking a look at the threaded hole to see if it's cracked due to over tightening

Uncas
Post #230144 24th Apr 2013 12:46pm
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excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5745

United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
Ive put the plug back in, and it seemed to go tight,, so to make sure it doesn't move I've put a dab of white pen on the filler plug to see if it moves. 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #230148 24th Apr 2013 1:22pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 7700

2011 Defender 110 Puma 2.4 USW Stornoway Grey
just ptfe it if it leaks Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop
Post #230294 24th Apr 2013 10:09pm
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