Replacing worn out Alternator Bearings - Navara D40
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- เผยแพร่เมื่อ 5 เม.ย. 2024
- My 2008 Nissan Navara D40 YD25 alternator started making a cooked bearing noise, I stripped down the alternator and found the rear bearing was the culprit, about to fall apart.. I replaced all bearings and belt, it is now running like new.
Not shown in the vid - There is a small hole at the rear of the alternator to insert a pin to hold the brushes back during reassembly.
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Most people including myself do indeed buy a new alternator. I learn a great deal from your videos but that dissection of the alternator is beyond me. I enjoy watching your mastery tackling problems that I have never seen.
Pull it apart next time, nothing to lose.
@@MartyT exactly how to start the learning process! Watching someone else do it first really helps tho
@@MartyT Only a day or two job and frustration when you finally fail 😂 done that, been there! 😆
@@MartyTwell apart from the screwdriver in the hand, bruised fingernails and the burn hole in the workbench… but hey, learning takes sacrifice.
I had a dodgy starter motor once, a former mechanic told me to pull it apart and go to a certain shop and get a replacement part or parts that cost a couple of dollars. I did this, fixed it and saved heaps.
This takes me back to the 1970s when I was a parts manager at a car dealership. We didn't replace assemblies, we overhauled them. We replaced alternator bearings and brushes. We replaced starter drives, bushings, brushes and bearings. We replaced water pump bearings seals etc. We overhauled carburetors.
Marty, Last time I rebuilt an alternator (faulty diode) it was a piece of cake to disassemble. This was for a 1970s car... It is obvious that, if there is any thought given to dismantling these things during the design process these days, it is directed towards making them unserviceable. Well done to overcome their booby traps!
3:05 Whacking the alternator on the blind end is just seating the bearing further into the housing. Use the inertia of the rotor to your advantage and tap on the ears around the perimeter of the housing near the steel core of the stator next time.
Also, the small hole near the brushes is for a temporary retention wire to hold the brushes back during reassembly. Pull the wire out once it's assembled.
yep.. should be illegal to make products that can't be serviced EASILY
Exactly what I was thinking it looks like it's specifically designed not to be serviced
No offense and not sticking up for the designers but…
This is a cost issue, almost no one works on cars any more and certainly they don’t rebuild their own alternator. Even at $50-60/hr here given the choice you would but the alternator vs pay for a rebuild.
I absolutely agree with the notion of design for repair but most buyers won’t pay for that.
As a teen I changed my share or alternators, starters abs solenoids. Even the motor brushes. For what ask a modern alternator to do they have an amazing service life. More than one side to this coin. But I totally respect what you do.
I also imagine that if you lived in a big city you’d buy vs repair. This is likely more a necessity for you, though Nelson is not that far off the beaten track. Last the planet thanks you for your service!
Don't think 60$ hr is the rate they charge... try at least double that🤔💰 New one with freight cost me $470 earlier this year ( cracked housing)😔 .... Italian car. My time is generally a lot cheaper , hardly ever pay them guys and definitely I don't pay myself 😂
This video reminds me of how we once maintained our vehicles. We would spend an afternoon to save 30 or 40 dollars. I admit there was a degree of satisfaction when the job was completed.
So you have single handedly wiped out the alternator replacement market 😅 I for one will never buy a replacement before attempting a repair again thanks mate 👍
i learned 2 useful tricks, that cut washer for the puller and that hole in the back to get at the axel. Good stuf!
Great tutorial Marty, sadly we live in a throw away society and people were willing to pay for new parts, but with todays extortionate prices it's time to learn to repair and save and learn new skills along the way. In the 70s my brother worked at Lucas B90 refurbing alteraters/dynamos and starter motors all available as exchange units. Goods old days.
Hopefully, the rise of the 'Right to Repair' movement, and the easy availability of many parts on EBay etc. is going to make it more possible to do some of these fixes at home. it's very satisfying to do even simple repairs, like putting a new set of brushes or bearings in a tool, and returning it to use, rather than simply chucking it and buying a new one...less for landfill, also. ; )
@@curmudgeon1933 Yes it's sometimes hard to source parts and we throw away too much. Remembering my days in farming (UK) you only brought new after all efforts to repair failed and a good deal was Learned.
Actually most people who replace alternators turn in the old one for credit. They are rebuilt by professionals and reused. They are not discarded like many other products. Replacements are frequently available new, or rebuilt at a discounted rate. I’ve replaced several in my lifetime, and always because they did not charge the battery. And I’ve never discarded one.
I should add that it was another inspiring and educational video from Mr. T.
I firmly believe that we’ve been duped into believing that our time is more important than it is, and that we should focus on working for money and spending money on new things. I love that Marty takes the time to do things himself and reuses what’s already available.
That chook background noise is strangely soothing...
The chook is just trying to stay out of the cooking pot …😂.
@@user-uk1uu9vt8z Keeps laying......
Marty T is a master. I believe if 100 people attempted to do the same thing, 90 alternators at least would be in the trash can by now, totally mangled, 50 people would have had some kind of tool flying into a wall, and many people would be bleeding and swearing profusely.
Sundays arnt complete without a Marty T video.
I'm not one to comment one videos to much but I've been watching your channel for something like 5 years now. It's very refreshing to satisfying watch you fix just everything in such a throw away world.As live has become more difficult I have learned to fix more things then I ever thought possible. Great channel man. Keep up such amazing content.👍. Thank you for sharing great no how.
Making a comment on any video that you watch helps the channel earn money to keep doing projects that interest us. It also doesn’t cost a penny to subscribe to any channel 🏴👍🏻
Way back, I had a bearing failure in my alternator - the rear one that is a needle bearing. No damage to the shaft, but the needle race was done. Now for the weird part. Not able to drive to a store for a new alternator or bearings as the fan belt is removed, I had the brilliant idea to re-build the bearing with what I had available, which was the plastic cap to a Raid spray can. I cut the cap into a strip that fit tightly into the needle bearing cup, along with some grease, pressed it in place. Worked fine for more than 5 YEARS, then I traded the car for a newer one!
😮 nice work!
It really is the small things in life that count Marty.Your persistence is contagious mate.
"Your persistence is contagious mate." It literally is. I recently had to replace the upper drive belt, the lower drive belt, and the deck belt on my riding mower, quite a job all at once, but the whole time was thinking "Marty T would have this fixed in 5 minutes and if he ran into problems he'd keep going until he got it." I persisted and now the mower is fixed and ready for summer. My son on the other hand (zero patience) would have scrapped it entirely and bought a new mower.
I will say I haven’t been a d40 fan but the work this horse has done I’m surprised this things still alive!!! What a tank
It has done a lot of miles towing heavy loads, I can't complain
Hey brother,
Pretty sure there is a small hole on the rear housing offset from where there rear bearing is located. If you push the brushes in they have holes in them that coincides with this and you can slide a small piece of stiff wire through the back side of the rear housing to lock the brushes back until you have fitted the rotor and then simply remove the wire piece to allow the brushes to recontact the comm.
Chur 👊
100% correct.
That's exactly what the hole is for!
I had a look with the endoscope, that hole appears to be threaded and blocked with a bolt from the inside
@MartyT that's unfortunate haha oh well sorry mate, I was drawing off of memory from 22 years ago. I used to rewind alternator stators for a living and on occasion had to complete a full reassembly. Not everything is of course the same. Cheers brother.
Yea, every alternator I've ever worked on had this.
$500 sounds like a lot for a new alternator. Impressive that you could replace the bearings. All you need are pinecones and a wood fire stove! :-) I’m impressed
From the US ... I'd say the issue is the steering wheel is on the wrong side.
Glad you showed the battery was disconnected in the end.
Marty T, small hole in the back of the rear casting is for inserting a pin to hold back the brushes when assembling. Search "EF Falcon Alternator pull apart - landscape view" at the 3.40 mark to see a view of the pin wire in the back. Many thanks for the vids and keep them coming, always learning. Cheers.
Finally, someone uses the impact screw driver for more than a brake rotor screw - really underrated tool.
You are right, that it is one of the silliest alternator designs I've yet to see
Hi Marty. Nice fix for the alternator. I liked the slotted washer trick behind the bearing. I'm squirreling that idea away in case a similar situation arises!
The trick with the washer to remove the baring was genius. The hole you drilled, I would have tapped is and place a bolt in it for the next time. Keep up the good content.
Thanks Marty for stating cost of parts vs cost of new alternator at the end of your video. It puts things in perspective.
Most things can be worked on if you put a little thought in. It can save money, keep a piece of equipment serviceable which would otherwise be down when parts are not readily or immediately available or avaliable at all, and over-all is a great skill to have!
The Delco Remy 10SI alternators are so easy to rebuild and when the regulators to convert them to single wire use became available, they were the go to conversion for almost any vehicle. I've mounted them on cars, tractors, forklifts and wheel loaders. All they needed was a ground to the case and one positive wire to the battery. Once you have done a few, it took less than an hour to replace the bearings, brushed, regulator, diodes etc. The kits are still available for under $40 US.
My uncle owns a garage that used to be automotive but now he does nothing but tractors ( His son does runs it now ) Back in the early 70s when i would go spend time with them he used to let me help around the shop and tearing these along with starters apart was one of those things that i got to do He would let me go at it and problem solve things Thanks for the memories!!
Marty your channel is brilliant in so many ways. Educational, entertaining, relaxed viewing,
ASMR 👌, a walk down memory lane and much more. Thank you.
Today episode took me back to late ‘50’s. We had 1/2 acre block, chooks down back, garage on side of the house, with a double carport end of the driveway.
That’s where as a young lad I’d sit on a box watching & listening to Dad & 2 older brothers do exactly what you do. The sound of those chooks in the background capped it all off for a beautiful visit trip to my memories.
Keep ‘em coming Marty. I hope I’m around long enough to see your children doing what you do. In the meantime, the memories you are creating for them, will keep forever.
Bty, Tauranga is where the chooks & the empty wooden beer box was situated🍺
Gosh, Marty! That is a first for me! Yes! You just saved yourself , several hundred $,s on a new alternator & work /labor.How many times did I buy new alternators over the past fifty years? Amazing! Ausum!🙂
I just started this job on my xtrail today, can't believe the timing of this! Loving your channel 😁
Great work 👌, budget maintenance instead of buying new , and what a saving!! Thanks for sharing your a inspiration to us all 👍💨💨
had an idler pully bearing go bad on my 4runner years ago. Toyota wanted 350 dollars to replace the whole part. Said it was a one piece part. I punched out the bearing and found one for 2.50 dollars. So essential to do your own work these days. Good on ya for not just firing the parts cannon at it.
Such an impressive skill set Marty!. I always enjoy watching you tackle your projects; thanks for the entertainment.
I really appreciate you ending the video with how long it took you and the cost. If Marty T says something was hard to do and it took him a day I think I'll revise my own estimate.
I couldn't really tell, but on a lot of older alternators, the little hole in the back half of the case, used to be for holding the brushes back away from the commutator. You push the brush way back into the slot and then a small pick or cotter pin through the hole from the outside in, that hold the brush back while you reassemble it. once it's together, pull the pin and you're set.
Auto Parts Store: "That'll be $500 plus tax mate"
Marty T: "Oh really? Hold my beer"
Always a pleasure to watch a professional working
Your diagnostic skills are top notch bro. 👍🏽
This video is so valuable. Actually showing why people usually just replace these, and then showing how to repair.
Usually, for me, the last screw is the hardest to get to break free. Excellent idea using a washer to pull the bearing off. Have good days!
Few men will rebuild an alternator. I salute you. I knew an old mechanic forty years ago who told me he ALWAYS rebuilt alternators and water pumps rather than handing money to the parts shop.
It’s shouldn’t be understated the impact our throw away based economy has on the environment and personal skills. Not to mention the joy and satisfaction of fixing something yourself. Thanks Marty keep up the good fight over there in the East islands - I’ll keep doing the same here in West Aus. 😊
loved the little washer trick for pulling the bearing
Hi Marty, Thank for the excellent video. At the rear of the alternator is another small access hole, next to the one you drilled. You can push the brushes down and insert a small steel wire (straightened paper clip) there that holds the brushes down when you install the rotor and the rear bearing needs to pass. Once installed, pull out the wire and the brushes will push back onto to slip rings.
He did it again folks, fixing the unfixable
As a retired service engineer, I recommend you buy a windscreen wiper puller. It would have fitted that rear bearing a treat, with nice thin jaws too. I have only one gripe, in that the Tommy Bar Handle bends under extreme loading (6204 bearing rusted onto a 20mm shaft) but in about 8 years of misuse it never failed me. They are cheap, useful tools.
As always, I learn a tremendous amount from your videos. As well, your approach to your task is instructive.
I think that you must be keeping CRC in business...😊
Great job Marty, a man after my own heart.
I've done bearings & brushes on Bosch alternators in the past and they were a bit more straight forward than that Nissan item as you could remove the brushes & no fancy clips 👍🏻
Not having the wherewithall when i was younger taught me a lot as it was a case of strip the old parts down to see what repairs could be done before purchasing new.
As you say, nothing lost if it's not repairable.
And, it's fun👍🏻👍🏻
Absolutely correct.😀🇬🇧
Hey Marty, I hope you had your son there helping you so he sees how it's done. When I was his age I spent every spare moment watching and helping my Dad fix his cars and motorbikes in the shed. It means you don't grow up with a "blockage" between your head and your hands.
I like that washer trick, thanks for that!
You lost me at...."there's a funny noise coming" lol. Amazing skills and knowledge. Thanks for sharing.
Great job!! Much more difficult than the ones I've had apart. I've not had any apart newer than about 2000.
That’s how they design cars now Marty,job well done. Thanks for the video.👍👍
I was taught how to use a big copper soldering iron when I was an apprentice about a million years ago - not used for electronics, it was to seal ducting by flowing lead in the joint. Not used one since - times have changed.
having worked for an altenator manufacturer, im amazed you got the thing apart and bolted back together again.
I have done this so many times. Bought a used Ranger. Had an electrical problem. While diagnosing it found out someone had replaced the alternator with a weaker one. So I will have to replace it next time it acts up. If you do the swap method make sure you use the proper part. Aftermarkets are notorious for listing weaker parts as valid replacements for the original. Great video Marty.
You never cease to amaze me. Great video. Thank you Marty. 👍
Did the same job in my patrol a few years ago. Alternator lasted less than a year before it blew out the diodes, so I decided it was just easier to buy a new one. At least that alternator was easier to access and work on.
Diodes are cheap ;)
@@MartyT I did try, but I honestly couldnt figure out what type I was supposed to get, and I just wanted my vehicle back up running. I got a higher wattage alternator for running accessories, so it wasnt a total waste of money.
Yes it is much easier to replace the alternator if you don't have time to muck around with it
I didn't know you could rebuild them !! I've always gone and gotten a new one!!
Good job, another one saved from the scrap pile. Enjoyed learning about alternators with you today, keep up the good work. Thanks!
They don't make them to last anymore.
I just replaced the fan motor on my home HVAC unit. The fan motor I replaced had sleeves instead of roller bearings. We have gone back 80 years.
Good job Marty.
I was thinking why bother - but when you stated the prices of the bearings I was very kinda shook. Great DIY as always Marty!
Awesome that you can fix just about anything! Wish you were closer...my tractor has an injection pump issue that has me perplexed....
What a job. I have to say I couldn’t tell the difference in the sound. All I could hear was the diesel clatter. 😁 A person just has to have patience and some mechanical ability. You have that in spades. Like your videos. Keep them coming. When you can. 😊
Great video as always Marty! Thanks for sharing your skills and ingenuity. You are a TH-cam treasure. 🤓👍
Wow. I didn't know that we mortals could even work on one of those. Excellent job Sir!
They don't make it easy. It's almost like they want you to spend $500 rather than fix it yourself! Good job.
Manual tensioner, brushed alternator, and a 1 way clutch pulley! Haven't seen those things on cars in the US for years. I am guilty of just swapping out alternators and not taking them apart. Usually need the car right away so to tear it apart and order parts isn't practical. But awesome job on the fix!
Nice fix! Always satisfying.
Most people would just throw that.
part away and purchase the new one. But you you fix it. You really amazed me. Thanks for sharing.😊
There is why there is a core charge, not a throw it away society it gets rebuilt for someone else to use.....no one throws them away....😡
Hey Marty, there's a small hole in the back of the alternator, push the motor brushes back, put a paperclip of small nail to hold the brushes, push in the shaft into place pull out the paperclip/nail. And brushes are safely back in place. If or when you do anything else to your alternator
How did you learn all these skills? Did someone teach you heaps growing up? Your son is going to have the best teacher there is!
I have been working on old motorbikes and cars since I was a kid
@@MartyT That, plus a really big brain I think.😉
Usually that small hole to the side is to put a small pick or strong paperclip through to hold the brushes back. Not sure on that one. Cheers
I've never had an alternator bearing wear out, but I've had to replace several sets of worn down brushes (on a 300K mile VW Golf), and a locked-up decoupler pulley & worn brushes (80K mile Dodge van).
Brilliant especially with my morning coffee
Hey Marty, hope you aren't flooded again, stay safe.
200mm of rain overnight, no damage.. we needed it, the stream was starting to dry up
The most resourceful man on the planet
awesome as always.thanks for sharing and taking us along.
It used to be the norm to go to the auto parts store and buy bearings, bushings, brushes, and diodes to rebuild starters and alternators. Just chuck the armature in a drill press, use a file to dress it up, a few swipes with a hacksaw blade between the contacts, and put it back together. Lost skills for the most part except for farm equipment and the like.
Nice work. Not too many people rebuild parts/components anymore. It’s becoming a lost art. lol.
Take care.
Hey Marty having re-built tonnes of alternators myself just a couple tips for next time. Undo the through bolts and then you can gently lever the front housing with rotor still in off using two flat blade screw drivers against the edge of the stator then press the rotor out of the front housing leaving the front bearing in place then remove the bearing retainer and knock out the bearing. Press the bearing off the slipring end of the rotor and re place it onto the rotor not into the housing. Push the brushes back in and insert either a piece of wire or small drill bit to hold the brushes back replace the front bearing into the housing with retainer plate and clean up the rotor shaft and it should slide through the drive end bearing nicely then you can hold the rotor in the vice and tighten the pulley. Then push the rotor into the rear housing and do the through bolts up pull the brush lifter out and you’re good to go
I wish I had a quarter of your skill Marty! Great video
preventative maintenance is often over looked. well done
You sure are smart! Love watching your videos!
Good to see you remembered to pull that plastic bag out of the intake, Marty. I was working on a diesel engine and I put a rag in the intake to stop detritus getting in the intake. I wanted to see if the engine would start and completely forgot I left a rag in the intake. The engine started but didn't run right so I shut it down, I was looking over the engine when with much horror I remembered about the rag. I looked in the intake and there it was buried deep, I fished it out and found luckily it hadn't entered where the valves were but got stuck in the intake runners leading to the valves. Lesson learned and I make sure to look at the intake before I button up now.
Great result and video bro. Having a bit of know how is a big help too. Safe travels. Ken.
I just bought a new belt for my daughter's van last night. I have not started the job yet, but I expect some bearing is failing. Wish me luck! 🙏
When did alternators become a thing, dynamos were so much more reliable. Yet again Marty T turns his hand to something and fixes it, wouldn't expect any else from the Tractor God. 😇👍
Alternators have multiple times the output of the same sized generator......and a generator to power all the electronics and doodads on a modern car would have to be a huge size...
A man with skills and tools always saves a lot of money
Good man. Thanks for insight. My alternator bearings are just starting to grin a bit. 👌🏻👍🏻
Great tutorial Marty-especially for those who have the same issue and may be hesitant to tackle the job. 👍 Btw; it's not that I want you to keep having issues, but I'm glad that we get to see you address them as they happen. Namely because with each repair, I'm always surprised how much I learn even though I've worked on my vehicles for decades. God bless.
My father was just like you, tighter than two coats of paint and able to rebuild the world. I fear we may need to do just that sooner than later! Your very lucky to live in the middle of nowhere as long as China stays put.
Stunning ! Well done.
Thanks! Love the cut out washer trick.
Thanks mate
Nice work Marty! $500 NZD is about $300 US, I'd rebuild too! Too bad over 99% of us just by new/rebuilt.. Thank You!
Well done. That bearing put up a fight, though. Score: Marty 1-0 silly bearing! ;-)
Excellent video Marty T :) also yes not many Alternator be rebuild by owner vechiles anymore and want buy new ones on Starter or Alternator ! I know myself do lots rebuilt myself on my own vechiles if parts available! Unless price is very reasonable only do and sometimes terrible prices!
Nice job . Could you have taped the hole you drilled and put a short bolt in there. Also double as a pusher to remove in again in the future if needed 👍
Good Sunday morning to everyone ✝️. Thanks Marty for the video 🔨🪛🛠️ and everyone just a shared thought. Through everything we endure in this old world , evil against us and uncertain times. Jesus Christ is the answer through it all ✝️💪🙏👍
Nice fix ,well done!
#MARTY I put 5 second hand alternators in my BMW e36 M50B20 Auto. 4 were rooted, neever lasting, for various reasons. Diode packs, brushes, bearings, mainly. It turned out that early e36's used a 10mm longer belt. no one knew and partsinfo didn't know it. rebuilding alternators sucks. BTW the two bearings cost >AU$50 ! I couldn't get the old bearings off with a press or puller and couldn't get a grinder in to remove the old bearings. I hate BMW and Bosch alternators. I bought a Lexus IS359 F Sport.
in 3 years I've only changed read discs and tyres plus regular maintenance, where my BMW blew everything at least once. Head gasket, 2x transmissions, diff, wiring harness... endless list.
Great work Marty thanks for sharing 🦘
Well done Mart, another learned experience for me. Bob. LH.