Diff-lock Trouble
- Rhett
- Senior Member
- Posts: 482
- Joined: 26 Jan 2016 14:48
- Full Name: Rhett van der Stelt
- Nickname: Rhett
- Home Town: Heidelberg
- Current 4x4: 3.2Did Shorty Pajero
- Home Language: English
- Location: Heidelberg
- Has thanked: 163 times
- Been thanked: 75 times
Re: Diff-lock Trouble
Another update and a kind request for any advice :
I took the Patrol to a park and activated diff-lock again, 4L and proceeded to do some circles. When doing a clockwise circle, the inner (right) rear wheel bites the ground and leaves noticeable tracks which indicate the diff-lock is engaged.
As soon as I turn to the left and do an anti-clockwise circle, the diff-lock light flashes (disengaged) and the inner rear wheel (now left) does not dig up the ground. This is puzzling to me.
I then did the above but in reverse. When doing a clockwise circle in reverse, (left rear still on the inside) the diff-lock engages (solid light on the dash) and it begins digging up the ground. When I did a reverse circle anti-clockwise (now right rear on the inside), the diff-lock disengages again (flashing on the dash) and the wheel does not dig up the ground.
There is no noticeable noise coming from the rear diff. Anyone able to give any advice on this?
I took the Patrol to a park and activated diff-lock again, 4L and proceeded to do some circles. When doing a clockwise circle, the inner (right) rear wheel bites the ground and leaves noticeable tracks which indicate the diff-lock is engaged.
As soon as I turn to the left and do an anti-clockwise circle, the diff-lock light flashes (disengaged) and the inner rear wheel (now left) does not dig up the ground. This is puzzling to me.
I then did the above but in reverse. When doing a clockwise circle in reverse, (left rear still on the inside) the diff-lock engages (solid light on the dash) and it begins digging up the ground. When I did a reverse circle anti-clockwise (now right rear on the inside), the diff-lock disengages again (flashing on the dash) and the wheel does not dig up the ground.
There is no noticeable noise coming from the rear diff. Anyone able to give any advice on this?
Rhett
https://www.youtube.com/channel/UC9e98c ... XUyixKJavQ
Nissan Patrol 4.8 GRX
Toyota Land Cruiser HJ45
https://www.youtube.com/channel/UC9e98c ... XUyixKJavQ
Nissan Patrol 4.8 GRX
Toyota Land Cruiser HJ45
- Michael
- Moderator
- Posts: 2479
- Joined: 05 Mar 2014 14:39
- Full Name: Michael
- Nickname: Steyn
- Home Town: Centurion
- Current 4x4: Patrol GU 4.2 Turbo Diesel
- Home Language: Afrikaans
- Location: Centurion, PTA
- Has thanked: 189 times
- Been thanked: 336 times
Re: Diff-lock Trouble
Sounds like a mechanical problem and something to do with the actual diff lock mechanism.
But I might be wrong
But I might be wrong
"The Just shall live by Faith" Rom1:17
Check out my build here My Patrol
And my engine rebuild here mostly engine related stuff
Check out my build here My Patrol
And my engine rebuild here mostly engine related stuff
- Rhett
- Senior Member
- Posts: 482
- Joined: 26 Jan 2016 14:48
- Full Name: Rhett van der Stelt
- Nickname: Rhett
- Home Town: Heidelberg
- Current 4x4: 3.2Did Shorty Pajero
- Home Language: English
- Location: Heidelberg
- Has thanked: 163 times
- Been thanked: 75 times
Re: Diff-lock Trouble
Thanks Michael, I believe you are probably correct
Rhett
https://www.youtube.com/channel/UC9e98c ... XUyixKJavQ
Nissan Patrol 4.8 GRX
Toyota Land Cruiser HJ45
https://www.youtube.com/channel/UC9e98c ... XUyixKJavQ
Nissan Patrol 4.8 GRX
Toyota Land Cruiser HJ45
- ricster
- Patrolman 1000+
- Posts: 5850
- Joined: 13 Jan 2010 11:16
- Full Name: Cedric Warner
- Nickname: Cedric
- Home Town: Alberton Gauteng
- Current 4x4: '99 Nissan Patrol 4.2 Turbo Diesel
- Home Language: English
- Location: LA..... No not Los Angles ..... Lower Alberton, Gauteng
- Has thanked: 591 times
- Been thanked: 468 times
Re: Diff-lock Trouble
I've never heard of this, but I can only think that there is maybe some rounding maybe on the dog tooth that somehow allows it to disengage when the side shafts are under different loads depending on the turn direction. ... Can you hear any clicking noise from the diff when its not locking up?
Ok I don't know much about difflocks at all, so this may be silly comment. If the vacuum is not what it should be, could that allow the dog clutch to engage but just not engage with sufficient force/power to stay fully engaged, allowing the (possibly worn) dog tooth to slip out? If this is the case then would that mean that the vacuum pump is worn and/or a leaky pipe almost anywhere in the pipe system from the vacuum pump to the black canisters to the solenoids in the engine bay and the pipes leading all the way to the back diff?
Ok I don't know much about difflocks at all, so this may be silly comment. If the vacuum is not what it should be, could that allow the dog clutch to engage but just not engage with sufficient force/power to stay fully engaged, allowing the (possibly worn) dog tooth to slip out? If this is the case then would that mean that the vacuum pump is worn and/or a leaky pipe almost anywhere in the pipe system from the vacuum pump to the black canisters to the solenoids in the engine bay and the pipes leading all the way to the back diff?
Regards
Cedric
Nissan Patrol GL 4.2 Diesel Turbo (Iron Maiden)
Nissan SANI 3.0 V6 4x4 (SOLD)
Isuzu KB 280 DT 2x4 ('ol Smokey) - SOLD
Suzuki TL 1000R "V twin" (Growler) - SOLD
Cedric
Nissan Patrol GL 4.2 Diesel Turbo (Iron Maiden)
Nissan SANI 3.0 V6 4x4 (SOLD)
Isuzu KB 280 DT 2x4 ('ol Smokey) - SOLD
Suzuki TL 1000R "V twin" (Growler) - SOLD
- Bruin Beer
- Senior Member
- Posts: 312
- Joined: 15 May 2012 19:49
- Full Name: Riaan Delport
- Nickname: Rooian
- Home Town: Pretoria
- Current 4x4: Nissan Patrol 4.8 GRX
- Home Language: Afrikaans
- Has thanked: 6 times
- Been thanked: 21 times
Re: Diff-lock Trouble
Cedric,
My money would also be worn dog tooth on one side.
My feeling is that if it was a vacuum problem this is a constant irrespective of the direction of turning.
Sound like a periscope inspection to confirm or eliminate this one before doing to much stripping.
Keep us informed.
Bruin Beer
My money would also be worn dog tooth on one side.
My feeling is that if it was a vacuum problem this is a constant irrespective of the direction of turning.
Sound like a periscope inspection to confirm or eliminate this one before doing to much stripping.
Keep us informed.
Bruin Beer
- Rhett
- Senior Member
- Posts: 482
- Joined: 26 Jan 2016 14:48
- Full Name: Rhett van der Stelt
- Nickname: Rhett
- Home Town: Heidelberg
- Current 4x4: 3.2Did Shorty Pajero
- Home Language: English
- Location: Heidelberg
- Has thanked: 163 times
- Been thanked: 75 times
Re: Diff-lock Trouble
Thank you! Yes I will have to do some inspection to see what is happening. Perhaps I will pop in to RDG and ask if they can assess it for me.
Will keep you informed!
Will keep you informed!
Rhett
https://www.youtube.com/channel/UC9e98c ... XUyixKJavQ
Nissan Patrol 4.8 GRX
Toyota Land Cruiser HJ45
https://www.youtube.com/channel/UC9e98c ... XUyixKJavQ
Nissan Patrol 4.8 GRX
Toyota Land Cruiser HJ45
- Bruin Beer
- Senior Member
- Posts: 312
- Joined: 15 May 2012 19:49
- Full Name: Riaan Delport
- Nickname: Rooian
- Home Town: Pretoria
- Current 4x4: Nissan Patrol 4.8 GRX
- Home Language: Afrikaans
- Has thanked: 6 times
- Been thanked: 21 times
Re: Diff-lock Trouble
Rhett,
What I meant was a bore scope inspection. Just realised my mistake but guess you got the idea.
This should be possible through the diff filler plug.
All the best and keep us posted.
There is always something for all of us to learn.
Thank you.
Riaan
What I meant was a bore scope inspection. Just realised my mistake but guess you got the idea.
This should be possible through the diff filler plug.
All the best and keep us posted.
There is always something for all of us to learn.
Thank you.
Riaan
- Rhett
- Senior Member
- Posts: 482
- Joined: 26 Jan 2016 14:48
- Full Name: Rhett van der Stelt
- Nickname: Rhett
- Home Town: Heidelberg
- Current 4x4: 3.2Did Shorty Pajero
- Home Language: English
- Location: Heidelberg
- Has thanked: 163 times
- Been thanked: 75 times
Re: Diff-lock Trouble
Haha yes thanks Riaan, I knew what you meant even though I didn't know you were wrong.
I called Rex Diff and Gearbox now. The techie says I need to pull the vacuum pipe off the actuator on the diff, and see if anything happens, otherwise it might be faulty fork. To me this doesn't sound like it could be the problem, but worth a try, Otherwise off to the mechanics I go.
I called Rex Diff and Gearbox now. The techie says I need to pull the vacuum pipe off the actuator on the diff, and see if anything happens, otherwise it might be faulty fork. To me this doesn't sound like it could be the problem, but worth a try, Otherwise off to the mechanics I go.
Rhett
https://www.youtube.com/channel/UC9e98c ... XUyixKJavQ
Nissan Patrol 4.8 GRX
Toyota Land Cruiser HJ45
https://www.youtube.com/channel/UC9e98c ... XUyixKJavQ
Nissan Patrol 4.8 GRX
Toyota Land Cruiser HJ45
- Rhett
- Senior Member
- Posts: 482
- Joined: 26 Jan 2016 14:48
- Full Name: Rhett van der Stelt
- Nickname: Rhett
- Home Town: Heidelberg
- Current 4x4: 3.2Did Shorty Pajero
- Home Language: English
- Location: Heidelberg
- Has thanked: 163 times
- Been thanked: 75 times
Re: Diff-lock Trouble
Hi Wilkie
Yes it does, constant flashing.
Yes it does, constant flashing.
Rhett
https://www.youtube.com/channel/UC9e98c ... XUyixKJavQ
Nissan Patrol 4.8 GRX
Toyota Land Cruiser HJ45
https://www.youtube.com/channel/UC9e98c ... XUyixKJavQ
Nissan Patrol 4.8 GRX
Toyota Land Cruiser HJ45
Who is online
Users browsing this forum: No registered users and 38 guests