Reply With QuoteAbsolutely normal and the reason why using a front locker on cliff-hugging tracks can be very dangerous.
Master
I have a Defender 110 with Ashcroft CVs and an ARB locker in the front. When four-wheel driving with the front locker engaged, I noticed that the steering tends to bind up to a point where I can only turn the steering half of the full lock. When I unlock the front locker, the steering comes good within seconds. There are NO noticeable noises (like grinding or rumbling) when this happens.
I have absolutely no issues with the steering (even in difficult terrain) unless the locker is engaged. The swivel hub bearings are good and the CVs have no play straight and at full lock. There is also no change in turning over resistance on full lock when I checked the CVs.
I don’t think this is normal as I my Patrol never showed issues like this.
Has this happened to anyone else and how did you fix it?
Thanks
Joachim
Swaggie
Absolutely normal and the reason why using a front locker on cliff-hugging tracks can be very dangerous.
MY21.5 L405 D350 Vogue SE with 19s. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
VK2HFG and APRS W1 digi, RTK base station using LoRa
Swaggie
X2 NormalOriginally Posted by Graeme
Wizard
SupporterG`day ,
as they mentioned , when it`s locked both rotate together and fight each other when you want to change direction .
When not locked each can turn at different speeds which helps in direction change .
Master
Thanks for your replies. I understand the mechanics of driveline bind up. However, I'm struggling to understand why it would limit the steering angle so severly. I am curious to understand what causes this as I have never seen this behaviour on locked Patrols or Landcruisers.
Master
Around The Corner (1937) How Differential Steering Works
YouTube explains it all
Around The Corner (1937) How Differential Steering Works - YouTube
Master
Either the coil suspension in Defender keeps the wheels firmer on the ground or the power steering pump is giving less assist in the defender.
Givin the urbanisation of the patrol and land cruiser, I'd reckon that it's the power steering that's the difference
Wizard
I have never noticed any change in steering lock angle in any locked vehicle before (rovers inuded) steering behaviour for sure but never, lock angle
To see if it is the power assist lock the locker and get it so it gives you the problem, push the clutch and give it a few revs to build up the power steering pressure, see if it overcomes it. But i wouldnt be forcing the issue.
Ashcrofts mentioned about their CV's developing a burr, could it be locker induced bindup making it a problem when unlocked it has enough give to get to full lock?
Perhaps a chat with ashcrofts is a good place to start
TopicToaster
SupporterThe hubs were probably in freewheel mode.
.. either that or the axles had snapped!
Wizard
SupporterI would support Dorian's suggestion re power assist.
I have Ashcroft lockers, axles and cv's front and rear with no loss of steering range when front locker is engaged.
I've experienced loss of power steering when serpentine belt came off...almost impossible to move the steering wheel, even when rolling.
The power assist pumps are robust units so I wouldn't want to send you on a goose chase to buy one. Is your pump leaking or your lines leaking - could you have air in your system? Try bleeding the steering box.
And as Simon says, it wouldn't hurt to check with Ashcroft. The CV balls case harden their seats (which is desired), but in the process move a little metal and build up a lip or burr (not desired) which causes a clicking noise; remedied by some basic grinding and lapping in the shed; not sure the lip would be sufficient to limit the range of the CV, but you never know.
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