 | Home > Technical > Clutch and Brake pedal removal |
 
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| Oldowner Member Since: 26 Dec 2018 Location: South west Posts: 601   
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Knock the roll pin going through the pivot shaft / pedal box out shown in second photo, the clutch pivot shaft will then knock out.
Personally I wouldn’t bother with that pedal box, I would fit a 300tdi / Puma over- centre pedal box instead, which is a straight swap. If converted to discs on rear generally the servo / master is swapped to the later 1992/3 onwards setup, and the brake pipe / valve layout copied from a 300tdi 110. |
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13th Jul 2021 5:01am |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3200  
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As Oldowner stated, you need to use a drift punch to remove the pin out. Can also see the brake pedal box pin in the 3rd photo. On my 1988 90 they were not cotter pins, but they might have been replaced with a simple pin. The larger shaft that acts as a pivot can be pushed either way as it is a straight shaft.
I have placed some pictures on my restoration thread, although no description how to disassemble (only clutch box is done so far). https://www.defender2.net/forum/topic72365-180.html 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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13th Jul 2021 6:14am |
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| Hufflepuff Member Since: 25 Oct 2014 Location: Hampshire Posts: 723  
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Ah its a pin which is drifted in from the outside? OK I'll clean up the outside to hopefully see the hole where it is located. I had assumed the pin was sitting in an indentation inside - thanks for your help.
What was your reasoning for swapping to a 300tdi/Puma pedal box Oldowner, just the avoid the hassle of cleaning this one up? Or is there actually a difference in the design? I would have preferred to have kept the original parts unless there was a operational benefit to changing. I have to remake all the brake pipes anyway on this vehicle, so swapping to the 300 tdi servo/master cylinder should not be a big problem, providing I can identify their part numbers to order. 2005 Td5 90 XS 1989 V8 110 CSW |
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13th Jul 2021 12:05pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3200
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The clutch pedal design was changed. The old one, as you have is kind of pressed steel with a C section.
The newer models have a 'solid', kind of flat bar pedal. To my knowledge, the advantage of the new pedal box is that you can fit an assist spring. I think JLR fitted it by default on Puma. For my restoration, I kept the original clutch pedal box because the clutch was very easy to push (Valeo pressure plate). But I think you can also fit a V8 slave which if not mistaken is 1" vs the 7/8" used on diesels. I do not know if there were changes to the brake pedal box. They all look the same from a distance. Of course there are differences in the servo and brake master. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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13th Jul 2021 12:54pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3200
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the newer clutch pedal box is SKB500280. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black |
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13th Jul 2021 1:04pm |
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| Hufflepuff Member Since: 25 Oct 2014 Location: Hampshire Posts: 723
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I shall look into it, thanks for the information Dinnu, very helpful! 2005 Td5 90 XS
1989 V8 110 CSW |
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13th Jul 2021 2:20pm |
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| Hufflepuff Member Since: 25 Oct 2014 Location: Hampshire Posts: 723
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Right when you know where to look, finding the pin hole on becomes obvious...
 Click image to enlarge Still, it was quite a challenge to knock it out - I didn't have anything small and strong enough. Ended up using an old unwanted Allen key with the bend snapped off, which then got properly jammed itself in the hole 
Click image to enlarge But still, we got there in the end. Click image to enlarge Click image to enlarge 300Tdi variant on the right (LR013488 - Defender Brake Servo - For Non-ABS Vehicles - Fits from 1992 Onward), original on the left. Click image to enlarge Despite there being two sets of holes on the pedal box, the new one is smaller than even the inner set of holes 
Click image to enlarge I guess this means I'll be scouring ebay for a > 1992 brake pedal box, and playing the lottery that I get something which fits. Curse them for changing things! 2005 Td5 90 XS 1989 V8 110 CSW |
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1st Aug 2021 9:11pm |
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| Horneteer Member Since: 10 Feb 2015 Location: Cornwall Posts: 60 
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Hufflepuff,
I've recently done this conversion and as you've found the early pedal box will not accept the late servo. The servo shaft is longer as well as the bolt pattern being different. However on a plus point, the pedal box to bulkhead bolt pattern is the same. The late pedal box is the only way to go and can be identified by the bulge in the side between the bolt holes and the bung for the pivot pin, like this one. Click image to enlarge I went from a '86 tired servo, discovery axles and calipers to a late servo/master cylinder with late Defender front calipers. When I tried them after the rebuild I managed to pin my face to the windscreen 
The Discovery and early 90 use 105mm long front pads where the late type use 125mm long pads, the discs being the same accross Discovery/Defender/RRC. Discovery and 90 rear calipers and discs are the same but 110's are different. |
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6th Aug 2021 3:02pm |
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| Hufflepuff Member Since: 25 Oct 2014 Location: Hampshire Posts: 723
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Thanks for the information Horneteer. I have one off ebay winging its way to my house at the moment, at least I hope its one of the later ones - the description did not indicate so I was going off the image which looked like it only had the 4 holes in the plate.
I will check the listing the bulge you referenced, good tip thanks! 2005 Td5 90 XS 1989 V8 110 CSW |
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6th Aug 2021 3:57pm |
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| Hufflepuff Member Since: 25 Oct 2014 Location: Hampshire Posts: 723
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Well, only 14 months later...
I have been trying to pipe up the vehicle with this new brake setup. There has been a fair amount of discussion about the requirement for the use of a brake bias valve on this setup, which as a reminder is: 110 with rear disc conversion on a Salisbury axle Newer sort of master cylinder, with three outlet ports. I ended up buying the brake bias valve, the mounting plate, and I don't think I'm going to use it. Seems Land Rover couldn't make their own mind up where it should be used or not, and it adds complexity - mainly that I don't really understand why only the RH front pipe runs through it, if I understand the LRWorkshop diagram correctly: Click image to enlarge So that's fine Land Rover didn't fit them to all the 110s either, so presumably its not necessary and I won't be locking the rear up every time I hit the brakes. The next problem I need to overcome is understanding which ports on the master cylinder go where? Looking at the LRWorkshop diagram: Click image to enlarge The struggle is to see how those ports in the diagram relate to the real life part: Click image to enlarge Click image to enlarge This has two ports coming out the side, and one out the bottom. I went and had a little look at the Td5 with ABS, and that also seems to have three ports, two are on the opposite side, but the bottom one is blanked off anyway 
Click image to enlarge Click image to enlarge Click image to enlarge Has anyone got any advice on which ports should go where on the 110? I would be guessing that its: Rear port --> rear axle brakes Front side port --> Front Left brake Bottom port --> Front right brake but given the typical reliance on the braking system actually stopping the vehicle, I would quite like to rely on a bit more than guesswork if you know what I mean  2005 Td5 90 XS
1989 V8 110 CSW |
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16th Oct 2022 8:30pm |
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