4x4 Isuzu NPS CV Breaks 3 days after diff lock fitted! Was it the beach or the Diff Lock?
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- Опубліковано 29 лис 2022
- Moreton Island gives us what for when we think that the CV breaks just after we had a locker fitted to the front. See how Karl diagnosis the issue to be a 100% sure prior to pulling it all apart. We do manage to see some of the island prior to the disaster. The community of Kooringal was amazing trying to help us along the way to a solution, postage, problem, delivery and how do we collect our CV and when.
The one guarantee is that Karl is going to be the one to fit it omg.
Cheers Katty and Karl
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Have a drink on us guys, you deserve it.
Hey Mike, thank you so much for your kindness. We will enjoy a ice cold beer next time we are passing a pub. We are currently camped at Notch Point for a few more days. Cheers Karl & Katty
bad luck there guys. I'm an old beach sand miner karl and the number one reason they break, ( we had merc 6x6 trucks) is full lock and full load in soft sand. You are on the right track though by decreasing the steering lock abilities and you can check the approx. amount when reassembling with some bluetac between the axel and cv cage. I just adjusted it until no way the two could touch and apart from some extreme bogged incidents we had trouble free runs. I realise you would be well off the island and on a new adventure now but maybe something to keep in mind. Be safe you two
Gday Wayne,
I just put longer steering stops in, and adjusted it so I could just tolerate it for normal road driving ( u turns etc), so I hope that is enough.
Thanks for being involved and commenting, we appreciate it.
Cheers, karl
Pop some black nitrile gloves in the truck tool bag. Helps keep your hands clean and out of the grease, oil etc
That’s a good idea. Thanks
Wow bad luck guys. The silver lining is there are always lessons to be learnt. As an NPS owner something for us to watch out for too as we also have and e-locker and tune. So great Karl is handy and can be a bush mechanic on the road, Chris is the same. Messy job though and Katty such awesome supervising going on there. 😂
Hi Guys,
I really don’t like this lesson….. being extra careful when in 4WD just so something won’t break ( when you are just doing normal stuff) doesn’t sit well with me. We now carry a spare cv. Keep up your blog, Katty likes it & she does supervise well😃
Cheers, karl & katty
I was always told never turn full lock in low range, especialy with the locker on or in reverse. Will pop every time. Good job on the repair, glad you got it sorted.
Thanks 👍
Great video guys. Excellent to see someone with some mechanical sympathy in both driving and repairs, i.e. proper skills and fault finding experience.
Definitely seems like the CV is underrated for the size of the vehicle.
Thanks for watching us ! , we appreciate your support.
Cheers, karl & katty
Yes. I smashed a CV when I was in my Toyota. I had one front wheel off the ground and spinning when I stupidly engaged the diff lock and it snapped like a kit kat. I learned my lesson.
Yep, that would break it. An expensive lesson though.
Cheers, karl
Great episode Katty & Karl
Thanks Tim.
Offt, another CV! You're giving me anxiety 😅 I replaced my left hand CV but that was due to water ingress. Great job on the episode, you guys keep getting better and better 👌
Thanks Troy..
When I first purchased the truck, I thought that the front end “ looked a little small”……. I’m beginning to think maybe first impressions are correct 😕
Cheers, karl
@@nowhereboundtouring maybe someone needs to come up with an upgrade replacement CV
That would be great, but I think they will wait for the demand first.
Going from our experience it will be coming, as there now seems to be be plenty more trucks getting around.
Cheers, karl
Karl your a weapon mate👍🏼👍🏼👍🏼
Was so glad he knew what he was doing, saved us a fortune 💲Cheers Katty
Hola katy hola karl mis australianos favoritos.. Exelente clase de mecánica el día de hoy . Creo q tal vez el problema mecánico fue un poco de mala suerte. X que karl es un exelente conductor. Seguro conducir en la arena se necesita habilidades diferentes y se le hace más difícil al camión se le exije más esfuerzo. Espero q el repuesto q les hace falta llegue pronto.. Mientras tanto disfruten de ese bello lugar.. Como siempre un abrazo a la distancia desde San José Costa Rica 😎🙏💪😀
Hello our fabulous Costa Rican, Karl certainly knows what he is doing and I am thankful for that. The truck does add an extra element to sand driving as you can't quite tell where the wheels are pointing. It is not so bad being stranded on a magnificent island awaiting a part. Hope you have a great day and appreciate your messages, I look forward to them. Hugs Katty and Karl
calm and slow well done clean and fix keep up the reality know the pain
Hi Nial,
Thanks for watching 👍
Cheers, karl
Drinks are a must in this situation. Karl just as well you are adept to deal with this. Bugger.
Gday Graham,
I did need a few drinks, but the pub was shut when we got there…… oh well….. went back and had a cool shower. What else can you do 😄
Cheers.
Bad luck guys but you working on it is a big saving I would do the same as we are bush mechanic’s and always find a way to get going, hope mine don’t break hope to catch up one day cheers Amos 👍🍻🇦🇺
No more reversing with the locker on ( I’m not sure what we would do if we still had the ATW auto bias centre in the same situation?)
A catch up on day would be great.
Cheers, k & k
Yep been there done that... On fraser island second day of a 10 day stay blew drivers cv on our challenger, took it out and drove a 3 legged 4wd around fraser is. Fixed it when we got home
Well at least you could still get around in the end, and it didn’t wreck your trip. Good job.
Cheers
Another teaching video. If I break a cv in my Canter, can I give you a call? I think Steve, my other half would be the supervisor holding a beer.🤣
The one holding the drink is the smart one…… maybe one day I’ll get there👍
thank you for great detailed video as well put together lot detail about look after your truck
my 2010 Isuzu crew cab 4x4 truck know great work truck as slow rebuild my truck for tour around Australia
have not broken my front CV in my truck only have power window problems that stop operation few time that other great truck for time use many years from job to make into tour for trip around Australia
Hi Robert,
I hope we have helped you with some ideas for your truck. It is good to start using it for some trips, even before you finish building it up. It may give you some more ideas on what you need in your truck.
Cheers, karl
Done many a CV over the years there great hay Karl lol I honestly thort the cv would be stronger being in a 4wd medium truck it is the long side they are the first to brake they cope a lot of torque as always very entertaining
Yep, I agree. There was no shock loading, just a smooth application of torque, shared between all 4 wheels.
👍
@@nowhereboundtouring it's the weakest point but I'd rather do a cv than a diff centre.
True!
i might be stating the obvious but re the cv... theres a few conditions that i think lead to that destruction. 37 inch tyres... reverse gear...deep sand.. and tune. all that torque has to go somewhere.. those factors add up. The stress factors combined i would imagine, are beyond designed tolerances. like you said, carry a spare and reduce steering angle a little. your fortunate to have the ability to repair it yourself. imagine the costs otherwise. perhaps a lesson for others ? good luck with your continued journey. ive not missed an episode. cheers
Gday Cactus,
Thanks for watching everything, we appreciate your support. Unfortunately it looks like the cv is the weak link ( like it normally is) but just a little to weak for my liking. Oh well, we just have to deal with it.
We now have the spare….
Cheers, karl
Se me olvidaba.. Felicidades x el exelente mundial de fútbol de su selección.. 💪🤠👍🇦🇺
Thank you they did us proud ⚽️ 🇦🇺
Bit of bad luck with the CV but CV's have one down side, when on extreme steering angles they have a tendency to 💥 if the diff locker is activated.
Sadly I've been there done that 😳🥴
I wonder if "RCV" are available from the US for the Isuzu's because they are lifetime unlimited warranty no matter what tyre's or even in competition. They're insanely strong!
Good Luck 🥂🍻
Hi Al,
I have checked about upgraded CV’s but they do not make them ☹️. They can but it would take a bulk order.
We may have to wait a bit longer, till a few more break.
Thanks for watching and supporting us 👍
I have broken many CV joint in my time 4WD tours and so on. What I have found out or cv's the weakest points are in Reverse especially when you turn do not turn ever only go straight back.
If you are going forward in 4WD high or low range you don't have any issues in turning. If you have lockers just used the rear to get you through just about anything if you have to use the front it is not meant to turn left or right so you only go straight ahead as soon as clear disengage your front locker it will drive like an all wheel drive. If you have a centre lock lock it and give you 50% Drive front and rear. I used to get all my parts through Sunstate 4x4.and terrain tamer to purchase cv's and rear axles as I used to break them. The vehicle it was in was a 60 series ute modified with a 6.6 l Chevy diesel fully balanced and lightened it was supposed to be my race engine with 600 horsepower 1003 nmt.
Thanks,
I won’t be using the locker in reverse anymore, that’s for sure.
Cheers, karl
I broke 3 CVs in a month in our old landcruiser, being stupid of cause. It's the broken bits that lock the steering up. If you pull it apart and remove all the broken bits. Put all the hub back together and you can can drive with steering in 2 or 3 wheel drive to get you out of trouble.
Hi Wayne,
That is what we would have to do as a last resort, and try to plug up the axle oil seal I assume.
Cheers
@@nowhereboundtouring yes just a bit of rag stuffed in the axle tube.
👍
Would like to see the fit up video, does the new cv come with the shaft, those splines looked pretty ground up.
It will all be in next weeks episode.
Cheers, karl
Trust me. I had an Iveco Daily 4x4 . And it was an obsolete pig of a truck. If CV,s are the only real issues with yours. You are winning.
Lol, that Makes me feel better. Thanks.
Cheers, karl
Too late now, but avoid electronic and air lockers, Torsten limited slip diffs are a better option.
Hi Jack,
It depends on what you are trying to achieve.
Somebody has to supervise. 😁 I killed a cv in my little Mazda 323 about 30 years ago
That sucks I found out I broke a uni not a cv whoops 😅
Cv joints are a dark chapter in auto engineering....solid axles all day long✌
?
We do have solid axles.
Cheers, karl
Sorry mate any axle needs cv joints or uni joints so you can turn the wheels to steer in any 4x4 independent front end or solid axle but solid axles are stronger and normally less trouble as they get more strength and support from the axle n diff housing in rough terrain
@@davidhorsey7164 fake news
Supervision rocks!
I guess Isuzu build the thing to be a local delivery truck, not so much an off-road expedition vehicle. I wonder which front axle/diff/CV OKA uses?
Yes, possibly.
The OKA is a smaller lighter set up. I believe they use a Dana diff. We are 1t heavier, but have the same max front axle load. Hmmm maybe there is the answer.
👍
Dana
Hey Karl, where abouts did you get the aluminium jack pad from? and what size jacks are you using? Thanks :)
Hi Stan,
I had the j a king plate made at an aluminium fabricator.
We use the original 5t plus a 10t bottle Jack. The thickness of the jacking plate makes up for the height associated with the larger tyres ( we also a high lift Jack plastic “ jacking plate”. It is half the height compared the the other one we have.👍
Cheers
thinking back 75% of the cv's ive busted i had the wheels turned more then 1/2 way under torque with wheel spin or it was wheel spin and it grabbed.
Gday Ron,
The truck had a very good turning circle, but as you say, I don’t think the cvs could handle it. Just too much stress on them, so I have now reduced the amount the wheels can turn, by a fair bit, which should help a lot.
Cheers, karl
I do not trust steering when 4 wheel drive engaged as all joints are put under massive pressure. I think it best to be going straight only when in 4 wheel drive. What do you think. Great video.
Hi Pat,
You can only go where the track takes you, straight or around the corner.
Cheers
Nice....is there a video on the rig? What model 4x4 is it? Thx tomk usa...fdny
Yes we have done several reviews of the truck and the gear on it.
Turning and lockers don’t mix
👍
Bad luck guy's, you'd think a truck like that would be stronger 💪, maybe to much power from the remap, I was told be a very good desiel mechanic that if I did a remap on the 78serise troopcarrier to change out the clutch as well, the extra torque will brake the factory clutch same with the c v maybe, I haven't done it yet 😉 👍🍻
Hi Rick,
You may be right, we will just have to see how we go.
Unfortunately there are no stronger replacement cv’s available. ☹️
Cheers, karl
@@nowhereboundtouring that's a shame, you would think the truck industry would have some stronger components, take it easy, be safe, cheers 🍻 rick 👍
👍
Just a thinking outside of the square thought bubble.
The OEM front differential is unable to deliver shed loads of torque to the stuck (or sticking) wheel; you just get bogged. Drive train should be alright.
The Torsen differential has a 3-1 torque bias and for every 100Nm of torque the front differential is receiving, up to 75% of that can (will?) be delivered to the wheel giving the most resistance. Drive train may receive a bit more than the OEM design.
A completely locked differential should deliver shed loads of torque without any bias, which, within reason, you should be alright with. But you mention a re-mapping (I think) which may or may not deliver more torque, but certainly a change in the power delivery. I'm wondering if the low range first gear and reverse gear factory torque restriction set-up works on a percentage of power, not an actual measurement of power? Drive train can probably receive a shed load more than the OEM design.
I feel for you, but with the wonderful supervision of Katty, things can only get better!!!
Gday Allan,
I’m not exactly sure how the torque limits are set up in the factory engine tune, but I do know that they have all been increased. We do now have a lot more torque than standard ( it now drives like it should, but we only have medium tune. There is a lot of trucks getting around with higher torque limits than us).
We will just see how it all goes, and we now carry a spare.
Lol, she is a good supervisor, isn’t she?
Cheers, karl
Did you say you had your locker on? If so that’s your problem, never use front locker if turning.
👍
Greetings friends, what size and model are those tires?
Hi,
They are Toyo m608z, 285/70r 19.5. They are no longer available in Australia though.
ATW now have a mud tyre as a replacement for these.
Cheers, katl
Better get cold beer ! A dirty greasy job . I did a split front diff. Half way down a big hill
Tanker full of water .
Wow that would have been scary. He definitely needed a beer afterwards hot hard work 😓
👍. Dam. 2 cv.? Sounds like more of a manufacturing issue. Not strong enough. How many ks did the first one then how many till the second one? On same side? Might need to buy a Milwaukee rattle gun. I wouldn’t take or recommend that workshop. If the can’t be bothered repacking wheel bearings.
They were about 30000km each, but I think that is just a coincidental 👍 both on the same side. I have reduced the steering lock now, buy a lot, so that should help.
Yep, you would hope that they would repack the bearings just because they have it apart.
Cheers, karl
Do you find low range for sand is best? Or high range most the time?
Hi,
We always use low range in the sand.
Cheers, karl
Thanks mate. Iv just got one and haven’t really got an idea of what I’m doing yet.
@AwaywiththeCaseys
No worries, Im happy to share my experiences. There is a lot of info in our videos, but I can help you out with any queries you may have.
Cheers
Well you two, very annoying, but great Karl that you can help yourself and still made it to the SOS station. You can't change anything, at some point the drive parts break down. Especially with the stress, as your heavy paths in the terrain stress the material. Happens with every vehicle. We had the fewest problems on the construction sites with the Unimogs and in Russia with the GAS 66 and the Urals, which went through everywhere and were always thoroughly maintained, especially the drives, transmission and engine. Good luck to both of you.
Greetings from Frankfurt
Hi Gerold,
We were lucky to get back to the town in 2WD before the tide came up. Also we were lucky to be able to get the new parts so quickly ( and they were the correct ones). It is all fixed now, and it is all ok.
I hope your weather is not too cold, and you are well.
Cheers, karl & katty
@@nowhereboundtouring our weather, shit could and same times rain by 0°C ans a little more. Greetings
☹️
Front diff locks and CV's, never a good marriage. Should never be engaged unless in straight ahead position, but drivers forget this rule in the heat of the moment. You could play it safe and ditch the locker in favour of a LSD, which, if set up correctly, will allow some slip rather than 100% torque to one CV only.
Hey Trickster,
We just changed from an LSD, 3 days prior.
👍
@@nowhereboundtouring Bugger! Re-shimming the LSD might have saved you a lot of time and trouble.
We had a torsion bias lsd, so all gear driven, no clutch/ plates to wear out etc.
Cheers
That design is a bit weak esp when they use them for fire trucks etc maybe in that situation a ground anchor and rear winch would help to keep the drive train un stressed but I'd think they certainly should be stronger as it's not like you was thrashing it in reverse and a situation where a walk or 5m with a chainsaw would save a lot of hassle n money great show thank you
👍
Wheel chokes 😳!
On the rear wheel 😉
Bummer about the CV but you ain't the first to bust a CV in sand so don't feel bad. If you can reduce the truck's lock to lock turn - bloody inconvenient for day-to-day driving but might save a CV or two
Hi Andrew,
I have now taken a fair bit of lock to lock out. It had a very good turning circle, way better than a Patrol or Landcruiser. Still can do a u- turn at the lights, so all ok I think.
Cheers, karl
Bugger!
I know
Katty, I have always said it is a pretty poor job that can not support at least one supervisor, well done
Cheers mate 🎉
Do you not understand that you cannot have the front diff locked & turn the front wheels as well?
Once you lock the front diff, essentially the both wheels are affixed to each end of a solid axle. If you turn the wheels then the inside wheel has to turn less revolutions than the outside wheel to go around a corner.
Because with the diff locked that can’t happen, then something has to give.
Either one wheel has to slip on loose surface or the axle (CV joint) has to shear, those are the only 2 options.
Because the duals rears were “bunny hopping” as they pushed a corrugation behind the wheel, then climbed it and started pushing the next hump to climb, power was being applied to the axles via drive line in uneven pulses, plus you have a power upgrade so overloading the drive train.
This exacerbates the tendencies to fatigue the metal in the weakest point which is the end of the splines on the CV joint.
If you’d only locked the rear diff and not the front as well, then you’d probably have got away with it.
Golden rule for front diff lock, only when the steer wheels are pointed straight ahead.👍
It was on sand, plenty of slip in sand 😃
@@nowhereboundtouring If there was enough slip in that sand, you wouldn’t have eaten up your CV joint. 🙄
🤷♂️
@@nowhereboundtouring
Not to labour the point, I’m not making this up.
It’s covered here reasonably well.
ua-cam.com/video/Xv4N5T0O28w/v-deo.html
From about half way through, it covers front diff locks, and towards the end, disengaging the front diff lock around corners.
Front diff lock is ONLY for straight ahead / straight back travel.
Whoever installed your front diff locker should have explained this to you when it was fitted recently.
Just trying to prevent it happening again is all, not criticising you for not knowing, we all have to learn, it’s a lifelong process.
Wishing you best of luck with it in future.
Thanks Ian, we appreciate your information.
I was aware of the operating characteristic’s and limitations of a front locker. I have had twin locked vehicles for the past 30 + years, and actually had a prototype ARB locker in my vehicle from late 1990.
You are correct about only using the front locker for straight ahead travel, as recommended by the manufactures of all lockers. In reality you can get away with it when turning on low traction surfaces.
It is unfortunate that our current vehicle appears to have a relatively weaker CV set up than any other vehicle I have driven. I will just have to be careful when I use the locker ( which is the last thing you need, because that’s why you are normally using the front locker, because the terrain is challenging).
Oh well.
Cheers, karl
Reversing nearly on full lock no good. Especially the vehicle wasn’t turning just dragging through the sand
Yes, obvious now, but at the time while reversing and almost bogged, you tend to neglect some things.
Cheers, karl
All that when you were eye to eye with that branch & could've just chain sawed it off & kept your forward momentum....smh bruh backing up or changing direction in sand is never recommended
The track was way to narrow for the truck from that point onward. I would have to cut down multiple trees to fit.
CV - constantly vulnerable.
Yep…. Hopefully no more breakages for a while 👍
Get a Tatra, no CV’s
What do they have, uni’s ?
Unimog
We investigated unimogs prior to purchasing our truck, but decided that their size was too limiting for the tracks we wanted to travel on.
Cheers, karl
@@nowhereboundtouring yes I’m looking an AAV global explorer and importing to new New Zealand (none have ended up here yet) but now I’m thinking what sort of Unimog camper I could set over here using an ex nz army mog. Big decisions to be made.I’m probably looking at 300k $nz + for the global explorer landed here with most of the upgrades.
Or buy a Canter or izuzu chassis and have suspension upgrades, bead lock wheels etc etc shipped over here, and go from there. But who do I get to build the box 🤷🏻♂️🤷🏻♂️😜🚀
At least spare parts may be easier to get if it is ex NZ army.
There is Australian companies that make custom pre cut panels to build your own box. The Outfit used them to build their mog camper.
5.54 you can see the cyclist wiz past. It was the cyclist.
Bad cyclist……😄
Get a rattle gun old mate
One day maybe….
Let the air out of ya tyres
👍
Not sure how true this is, DMAX and MUX also have weaker axles/ drive shafts. They are designed to blowout at a certain Nm, to protect more critical components through the drive line…
You may be correct, it is better to change a CV than a diff or gearbox…..
Hopefully we don’t have any more issues.
Cheers, karl
Throw the diff lock in the bin... also you are in sand at full gvm on super singles 🤷♂️
Everything at full stress thing's go wrong.
😉