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Old 05-16-2012, 05:00 PM   #1 (permalink)
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Honda TRX300 Rear Axle

Hi, just bought a 97 Fourtrax 300 which I am planning on restoring. Runs fine, looks a bit rough and i was told when i bought it that the rear axle was knackered! The guy told me that he had to turn the axle around for it to have 4x4? Still dont know what he was on about, and looking at it it looks no different. When i started stripping the plastics off, i lifted the rear of the bike up and the rear axle was clearly very loose and when grabbing the wheels and shaking them from side to side there is clearly alot of play!! Where the axle goes into the rear brake drum it is very slack. I allways thought these axles were one piece but by looking at this one, when lifting the rear up, the tyres stay on the ground asif its in half?
Any idea what i should do or replace? Thanks
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Old 05-16-2012, 05:29 PM   #2 (permalink)
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That is a 1 piece axle -- take it all apart, you may only have bad bearings -- pull the axle out and see what shape it is in and go from there.
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Old 05-16-2012, 06:04 PM   #3 (permalink)
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Great, thanks alot! I'll be in touch tommorow with how i get on!
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Old 05-16-2012, 06:48 PM   #4 (permalink)
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while your in there i would disassemble the rear diff and replace the ring gear bearings. as well as the brake backing plate bearing. i'm betting they're all shot.
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Old 05-16-2012, 10:49 PM   #5 (permalink)
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X2, it's a solid, one piece axle.
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Old 05-16-2012, 11:04 PM   #6 (permalink)
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X3 on the one piece axle shaft...You may get Iris,err Scottish lucky,and simply need a full bearing,and seal kit,tear it all the way down,inspect the ring,and pinion also,replace anything suspect,or worn,and make certain to torque the outer hubs back on properly,or they will come loose,and ruin the hub splines... Got any pics of the new to you atv??
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Old 05-17-2012, 12:36 PM   #7 (permalink)
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Thanks guys! Aye stripped down the rear axle, what a mess, no bearings left on the drum sideand the centre of the drum cover is rotten where the seal is, thats why it was rattling so much! Will try and get some photos up for you allright. One more thing, the engine top end is very ticky and sounds like a piston ring is jumping about inside it, I am hoping its just a tappet that needs adjusting so going to check that tonight seeing as i have the tank and that off!!!
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Old 05-17-2012, 02:21 PM   #8 (permalink)
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I'd start with adjusting the valves,changing the oil,and filter making certain it is a wet clutch friendly oil,and a 40 weight seeing as it is summer time,and that ticking noise should lessen quite a bit,but do not be surprised if the timing chain is stretched,and needs replacing... Pics are always good too btw...We love atv porn round here...
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Old 05-17-2012, 03:00 PM   #9 (permalink)
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Yeah will try that!! What oil would you recommend?! Absolutely, will get pics up as soon as I get them on the laptop. Now that I've stripped everything, I also changed the silencer today as the one that was on it was basically non existent and when I connected the battery and solenoid back up to start it it had no ignition!!! The neutral bulb is fine but won't light and also the oil bulb is dim!!! I noticed one of the wires going to the solenoid is burnt, there is no plastic left on it!!!! I stripped it back a bit and joined new wire to it but still no ignition!!! It starts no bother when crossing the solenoid though!!!?
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Old 05-17-2012, 04:37 PM   #10 (permalink)
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Rotella makes a 5w-40 T6 full synthetic oil that will work just fine,and is sold at Wally World for 20bux a gallon,or any atv/motorcycle spec'd oil would work just fine as long as it is rated for wet clutches...Sounds to me like that wire that is burnt has a short in it somewhere along its length,and I'd start by testing every wire associated with the starting system using a multi meter,and checking for both continuity as well as power with the key on in separate checks...If it melted the insulation,then there hasta be a reason for it to have,and better find,and repair the problem,than risk burning the atv to the ground,or destroying the entire wiring harness if left un repaired...
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