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Cubflyer



Member Since: 25 Sep 2021
Location: Suffolk
Posts: 278
United Kingdom 1994 Defender 90 300 Tdi SW Arles Blue
Defender 90 300 Tdi (1994)
Evening all ...

Can somebody help please?? I've just been doing a bit of corrosion prevention under the bonnet and would appreciate your help please.


Click image to enlarge

Firstly (Number 1 in the picture) had some flaky surface rust on the plate held by six slotted screws. What's under the plate and why does it have a rubber seal??

I want to remove the six screws and replace with new ones ... Any problems to be aware off???

Secondly (Number 2 in the picture) is a purple wire coming through the bulkhead to a dead end (Insulated) ... comments please???

Many thanks

John
(Learning by the day Smile ) 2010 Defender 90 300Tdi CW (White/1994)
2021 Defender 90 300Tdi SW (Blue/1994)
Post #1012896 27th Oct 2023 6:14pm
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jfh



Member Since: 08 Jan 2014
Location: West Coast
Posts: 359
South Africa 2007 Defender 110 300 Tdi SW Chawton White
1. Clutch master cylinder. The seal is to try keep water off your foot.

2. I don't know.
Post #1012904 27th Oct 2023 6:55pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3418
Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
Re: Defender 90 300 Tdi (1994)
Cubflyer wrote:


I want to remove the six screws and replace with new ones ... Any problems to be aware off???



They are not standard metric screws, but are more like self cutting screws.
I have purchased SL510031 for my Puma. They are Philips (or Pozi) heads, but not replaced them yet, so unsure if the threads are an exact match. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #1012934 28th Oct 2023 6:08am
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TexasRover



Member Since: 24 Nov 2022
Location: Paris
Posts: 1079
France 2002 Defender 110 Td5 DCPU Chawton White
Purple wire is typically for the door switches (purple blue or is it purple white?). I hazard a guess that this wire is for the bonnet switch that is not fitted on your car?
Post #1012940 28th Oct 2023 6:59am
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Cubflyer



Member Since: 25 Sep 2021
Location: Suffolk
Posts: 278
United Kingdom 1994 Defender 90 300 Tdi SW Arles Blue
Re: Defender 90 300 Tdi (1994)
Dinnu wrote:
Cubflyer wrote:


I want to remove the six screws and replace with new ones ... Any problems to be aware off???



They are not standard metric screws, but are more like self cutting screws.
I have purchased SL510031 for my Puma. They are Philips (or Pozi) heads, but not replaced them yet, so unsure if the threads are an exact match.


Hi Dinnu ... Yep, removed them today and as you say "Non standard".

I'm very tempted to tap out to standard M5x0.8. One issue is getting the bottom left hand hole tapped because of the Brake Servo unit being in the way. 2010 Defender 90 300Tdi CW (White/1994)
2021 Defender 90 300Tdi SW (Blue/1994)

Last edited by Cubflyer on 28th Oct 2023 9:56pm. Edited 1 time in total
Post #1013030 28th Oct 2023 9:46pm
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Cubflyer



Member Since: 25 Sep 2021
Location: Suffolk
Posts: 278
United Kingdom 1994 Defender 90 300 Tdi SW Arles Blue
TexasRover wrote:
Purple wire is typically for the door switches (purple blue or is it purple white?). I hazard a guess that this wire is for the bonnet switch that is not fitted on your car?


Having cleaned the cable carefully, it's colour is Purple/Red ... any thoughts folk please

Certainly there is no bonnet switch on my 1994 Defender 90 2010 Defender 90 300Tdi CW (White/1994)
2021 Defender 90 300Tdi SW (Blue/1994)
Post #1013031 28th Oct 2023 9:49pm
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Cubflyer



Member Since: 25 Sep 2021
Location: Suffolk
Posts: 278
United Kingdom 1994 Defender 90 300 Tdi SW Arles Blue
Re: Defender 90 300 Tdi (1994)
Dinnu wrote:
Cubflyer wrote:


I want to remove the six screws and replace with new ones ... Any problems to be aware off???



They are not standard metric screws, but are more like self cutting screws.
I have purchased SL510031 for my Puma. They are Philips (or Pozi) heads, but not replaced them yet, so unsure if the threads are an exact match.


Hi Dinnu ... Just a point of note, I elected to get a replacement Clutch cover and gasket (and screws) as mine were in poor shape.

I ordered from "Boltonbits" (eBay item eBay Item No. 235181059981) and they arrived this morning. Cover and Gasket great but they supplied standard M5 slotted round heads.

... So I "Did" decide to tap out the original holes to M5. The bottom left hole was not straight forward because of the closeness to the back of the Brake Servo Unit. I took the M5 tap and put an 8BA spanner on the flats of the tap and eased it through that way.


Click image to enlarge

John 2010 Defender 90 300Tdi CW (White/1994)
2021 Defender 90 300Tdi SW (Blue/1994)
Post #1013358 31st Oct 2023 2:04pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3418
Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
Disappointing to read the ebay advert that claims
Quote:
& Six Correct slotted new screws


Guess M5 would work, but I am the Original, Original, Original type of person. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #1013382 31st Oct 2023 3:57pm
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Cubflyer



Member Since: 25 Sep 2021
Location: Suffolk
Posts: 278
United Kingdom 1994 Defender 90 300 Tdi SW Arles Blue
Yes ... a little mis-leading.

Glad to hear you like "Original" ... someday you just "may" have a problem

For me "Metric" through and through Thumbs Up 2010 Defender 90 300Tdi CW (White/1994)
2021 Defender 90 300Tdi SW (Blue/1994)
Post #1013384 31st Oct 2023 4:07pm
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Rednaxela



Member Since: 23 Sep 2019
Location: UK
Posts: 41
United Kingdom 
Why did you need to replace those screws anyway?!
Post #1013957 4th Nov 2023 9:25pm
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Cubflyer



Member Since: 25 Sep 2021
Location: Suffolk
Posts: 278
United Kingdom 1994 Defender 90 300 Tdi SW Arles Blue
... because they were badly corroded! 2010 Defender 90 300Tdi CW (White/1994)
2021 Defender 90 300Tdi SW (Blue/1994)
Post #1013959 4th Nov 2023 9:39pm
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