Quantcast
Jump to content

  • Do you own an ATV? Join our Forum!

    As a member, you can post in our forums, upload your photos and videos, use and contribute to our downloads, create your own member page, add your ATV events, and even start your own ATV club to host your own club forum and gallery.  Registration is fast and you can even login with social network accounts to sync your profiles and content.

Paul Hannan

Honda Trx300 final drive (rear diff)

Recommended Posts

Hey, 

Looking for some advice regarding rear diff issue.

I have lost all drive power to the rear wheels from the diff. I have drained the diff oil and have not really found anything to scary apart from the colour of the oil....  Ive jacked the bike up.  Then I took the side cover off the transfer case to confirm drive shaft is all ok. And spins when put in gear etc. Then check the rear diff oil filler where you can see the crown wheel (final gear) that was spinning all ok.

My guess the spline how stripped on something either final drive or the main axle. Main question is how do I tell if the final drive splines are stripped?

Also during the process I managed to bugger the diff oil filler bolt plug thingee! Any ideas where I can get one? I’m in New Zealand if that helps.

cheers

 

Share this post


Link to post
Share on other sites


I think you would visibly see if there was gear damage. Are there any metal shavings in the oil? Check out this topic:

Have you done a spline inspection? Check out this video:

 

Share this post


Link to post
Share on other sites

No drain the oil no steel seen. Made a start yesterday pull the shaft out. Hopefully by the weekend I will know more. I’ve tracked down a second hand one. Hopefully that all that is buggered. Any idea on how to flash all the old oil out of the diff. I’m not really wanting to strip it down? Cheers

Share this post


Link to post
Share on other sites

I had the splines go out on my 450S, I ended up replacing the main drive shaft and the main drive gear.  I could tell it was out by jacking up the back end then putting it in 1st gear and rotating the rear tires, I could spin them with out too much effort.  It wasn't too bad of a repair job. 

Share this post


Link to post
Share on other sites

Did you find the cause?

I have the same machine and was wondering what went wrong?

Share this post


Link to post
Share on other sites


I know on mine it was from pulling things that were way to heavy for it.  It was a farm ATV for a long time before I got it.

Share this post


Link to post
Share on other sites

Mine is a 1999 TRX300 and I have been using it to pull a trailer loaded with firewood for the past 15 years 

Share this post


Link to post
Share on other sites

Sorry for the delay. It’s all fixed now. I purchased a second hand main shaft and replaced it my self. Easy job  apart from the seized castlated nut on the left hand side. Ended up having to grind it off! 

Flashed diff oil several times. All good.

Bikes for sell now since been replaced with Honda foreman 500!

Share this post


Link to post
Share on other sites


Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Similar Topics

    • By mkibbe
      My 2014 750 king quad stalls sometimes when I touch or turn the handlebars,the problem has gotten worse,my machine has 475 miles and is only trail ridden,I have a new factory battery and i have 14.2 volts when the quad is running and 13.3 on the battery when not running,also using a multimeter there is no change in volts when turning the bars until it does stall,If I pull the 40 amp power steering fuse it will not stall.......I've been told its the ECU,Hate to buy one if thats not the problem,but its kinda leaning towards that,,,,,need some opinions.

    • By Halley
      Could anyone take a look at the picture and let me know if I’m needing to replace the actual throttle cable or the throttle handle ? Its for a can am 2018 outlander XMR 1000. It’s in limp home mode and throwing code P1619


    • By Blenderite
      Hello guys! New to the forum, and fairly new to ATVs. I've driven them, but never owned one. Now I do own one. Just picked it up today. It's a 1999 Yamaha Big Bear 350. It's been through some stuff. The guy I got it from told me the previous owner removed the front diff because he didn't want to replace the half shaft. So it's 2wd, even though it's supposed to be 4x4. Lovely. I can deal with that for now.
       
      More importantly, I need to get it running. The carb needs to be rebuilt. The guy I got it from said he sprayed it all out and it still didn't work. I'm concerned he might have damaged it or not put all the parts back. I was looking at a replacement carb, and the OEM parts is $600. I'd rather not spend $600 if there are any other options. I have seen carbs on Amazon and eBay that are in the $40 - $100 range that say they fit. Anyone have experience with these? I'm going to get a rebuild kit for the current carb just to make sure that won't fix it.
       
      Thats the first thing with it. Secondly, it was completely rewired. I need to find a original wiring diagram so I can put it back how it was, with a key and all. Currently it's wired with just a rocker switch. Any sources for a service manual that would include wiring diagrams?
       
      Thirdly, is the Big Bear 350 a good atv? I picked it up for $700. It does start and run when you spray starting fluid into the air intake, so I am not concerned about the engine being bad. I plan to use it for the farm, running around and carrying things with it like minerals and feed and such. Not really for mudding and things like that. How good is the 99 350?
       
      I am certain I will have more questions as I examine it more, but that's all for now. Thanks in advance for the assistance!
       
      -Blenderite
    • By Johnnyhorsepower
      I finally found an awsome app for your phone that shows you on a map all the trails near your location. You can read or add reviews, look at picts...etc
      Its called: atv escape

      John
    • By Corky L Leazier
      One day went to start and nothing, the fan comes on cause its straight wired ,but no lights and no all the fuses show no power with the switch on. Changed starter relay nothing changed thinking maybe switch next and how can I test it.
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...