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alexatnd

Member Since: 19 May 2015
Location: Yorkshire
Posts: 270

Clutch flex hose securing nut size

Hi all,
Been fighting with a friends 1997 300Tdi replacing master and slave cylinders.

1st problem was disconnecting metal brake pipe from master cylinder, ended up using a lot of heat once pedal box was off the car.

Appears that previous owner didn;t bother using the small metal pipe that goes into the slave cylinder, they just stretched the flexible hose and screwed that directly into the cylinder. We're reinstating the bracket and small pipe.

Next problem .. disconnecting the flexible hose from the mounting bracket nearest the master cylinder. Needed to cut through the threaded part of the flexi hose to get it off.

To attach the new flexi pipe at that end looks easy, just need a 7/16 UNF nut to hold pipe onto bracket Nut costs about 56 pence.

However .... the nut used to hold the other end different size of course) onto the small brackets that bolds onto the slave cylinder is a whopping £7.35 ex VAT from land rover ( 25 tpi, ext diameter 0.465" part number 2K8686L)

Anyone know what size of nut this is ? land rover price is a bit eye watering .. although not as eye watering as the £73 ex vat they want for the brake pipe from the master cylinder to the flexi pipe though!

Rgds

A Santa - 1977 Series 3 - new chassis, tub, disc brakes,SU Carb
Gertie - 1999 110 TD5 - like a Phoenix from the ashes back on road... almost
Effie - 2004 110 TD5 County

9th Apr 2018 12:07pm

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

http://www.allbrit.de/UNI.cfm?PAGE=756646&SPRACHE=EN

7/16 UNF half nuts

5/8 UNF half nuts

Last edited by dorsetsmith on 9th Apr 2018 7:49pm. Edited 1 time in total

9th Apr 2018 4:42pm

Retroanaconda

Member Since: 04 Jan 2012
Location: Scotland
Posts: 2647

Just a standard half nut of the correct thread is it not?

9th Apr 2018 7:30pm

alexatnd

Member Since: 19 May 2015
Location: Yorkshire
Posts: 270

dorsetsmith wrote:
http://www.allbrit.de/UNI.cfm?PAGE=756646&SPRACHE=EN

7/16 UNF half nuts

5/8 UNF half nuts

Cool! many thanks
A Santa - 1977 Series 3 - new chassis, tub, disc brakes,SU Carb
Gertie - 1999 110 TD5 - like a Phoenix from the ashes back on road... almost
Effie - 2004 110 TD5 County

10th Apr 2018 11:40am

Ramsay

Member Since: 30 Sep 2015
Location: Moffat, Dumfries & Galloway
Posts: 627

1995 Defender 110 300 Tdi CSW Auto Keswick Green

Please check the tpi. 7/16" UNF should be 20. You mentioned the old one had 25. That does not match UNF or UNEF. 1995 Defender 110 CSW
1971 SIIA Lightweight

10th Apr 2018 12:46pm

alexatnd

Member Since: 19 May 2015
Location: Yorkshire
Posts: 270

Yup the 7/16 is 20tpi the "other:"one is 25 tpi Santa - 1977 Series 3 - new chassis, tub, disc brakes,SU Carb
Gertie - 1999 110 TD5 - like a Phoenix from the ashes back on road... almost
Effie - 2004 110 TD5 County

10th Apr 2018 2:33pm

alexatnd

Member Since: 19 May 2015
Location: Yorkshire
Posts: 270

And of course stuff is still wrong.

The manual details the bits you need:- metal brake pipe from master cylinder to flexible pipe which connects to a wee metal brake pipe which in turn screws into the slave cylinder except ......

If you screw the metal brake pipe into the slave cylinder the other end doesn't fit the thread on the end of the flexible brake pipe. Everything bought specifying either reg number or chassis number.

Solution ? Same as it was when Pte got the car in the 1st place, screw the flexible hose directly into the slave cylinder and forget about the intermediate metal brake pipe!

Sigh! Santa - 1977 Series 3 - new chassis, tub, disc brakes,SU Carb
Gertie - 1999 110 TD5 - like a Phoenix from the ashes back on road... almost
Effie - 2004 110 TD5 County

12th Apr 2018 1:28pm

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