 | Home > Technical > Defender pulling left when braking |
 
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| NickMc Member Since: 01 Oct 2014 Location: Norn Iron Posts: 1568   
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Check your Hoses and callipers- always change them in pairs.
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14th Jul 2019 11:06pm |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2588  
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initial feedback from the workshop is that there's nothing wrong with the calipers nor the braking system.
As someone else said, it could be something else in the suspension which is causing this, so they're checking other things tomorrow. -- 2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged 
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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15th Jul 2019 4:03pm |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2588
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Just got the landy back: they fitted Terrafirma Medium coils in front to match the rear, and wheel alignment was done (it was way out).
They checked the braking system on rollers - all wheels are getting the same amount of braking +-5%. I'm told this is not enough to notice, and the spec goes +-30%. It drives better, but there's still a hint of pulling under hard braking - I doubt anyone else will notice it though. I think it's time to find another indie... -- 2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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24th Jul 2019 1:10pm |
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| spudfan Member Since: 10 Sep 2007 Location: Co Donegal Posts: 4478 
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Any reduction in brake fluid? 1982 88" 2.25 diesel
1992 110 200tdi csw -Zikali 2008 110 2.4 tdci csw-Zulu 2011 110 2.4 tdci csw-Masai |
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24th Jul 2019 9:53pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7683 
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If it's with tolerance on the rollers, as stated, then look to radius or trailing arm bushes. Cheers
James 110 XS Utility 130 Puma Station wagon/camper (in the making) 90 Puma Hardtop |
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24th Jul 2019 10:32pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 19559 
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Remember weight shifts with intertia dependant on speed.
Under braking the weight will shift to the front axle and or extra force applied to steering components also. If any component is unequal from left to right then that will cause a pull to one way or the other. Have you had a look at the damper Bushes and springs? Beyond that, take a look at steering components ball joints etc. This is in addition to what JST mentioned previously. I'd check the cheaper easier things first, as most of the time this is the issue. Are the tyre pressures equal? Diesel$ Live$ Matter. ⛽️🛢️👨🔧🧰⚙️ RED, WHITE & BOOST! 🇬🇧 |
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24th Jul 2019 11:17pm |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2588
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Nope, no leaks anywhere, and the brake fluid level hasn't changed.
Yes, tyre pressures are equal. Going to see a new indie today, we're going to drive together and then he'll put it on the lift to see if he can spot anything outright. -- 2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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25th Jul 2019 7:53am |
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| toetankh Member Since: 05 Aug 2015 Location: Papendrecht Posts: 22  
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As custom90steve says, but also do check track rod and steering rod for 'straightness' (is this how you say that?). If not completely straight, it can cause weird steering behaviour under (hard) braking.
And it is quite possible to get the tracking fine without one of the rods being straight, so might not be as obvious as it looks. Good luck! |
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25th Jul 2019 8:47am |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2588
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Ok, went to see a new indie today whom a lot of our club members have recommended.
Car was on the lift, and we did a full inspection - a number of things he wasn't happy with, including the rear propshaft not being bolted on tightly enough, some bushes not the correct spec, etc. He also bled the brakes and we went for a drive - problem sorted! He's keeping the car for a few days to systematically work through the ongoing drivetrain vibration issue. -- 2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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25th Jul 2019 8:35pm |
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| Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2588
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Issue was resolved by Auto Excellence: they found the front left bearing to be a bit loose and added a shim to tighten things up - it now drives very well and brakes in a straight line! --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged
Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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7th Oct 2019 2:53pm |
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