RB30, some 2-3 inch lift auxiliary LPG tanks
Few more mods on the way
http://www.worldwildlife.org/species/tiger
https://www.panthera.org/
Cheetah Outreach
Patrol'n (15th November 2015)
So here's a short video of a noise I found when checking to see if the pinion bearings had play. It didn't seem to have any play like dom14's video, but with turning the front shaft back and forth a short way, this is a noise I found. My questions are, could this be causing noise at speed with the lever in 4 high and hubs unlocked, is it normal or not, (play in the centre)??? And lastly what could it be causing that and should I be worried, coz at speed it doesn't sound normal!!! Thanks for everyone's ongoing help :-)
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Last edited by Patrol'n; 15th November 2015 at 10:02 PM.
93 GQ wagon, RB30, extractors, 2 inch tough dog lift, 5 spd, A/T KO2 32's, steel winch bar, rated recovery points, red arc dual battery set up, rhino roof racks, UHF etc etc. Slow and steady might not win the race but it gets me there eventually...
93 GQ wagon, RB30, extractors, 2 inch tough dog lift, 5 spd, A/T KO2 32's, steel winch bar, rated recovery points, red arc dual battery set up, rhino roof racks, UHF etc etc. Slow and steady might not win the race but it gets me there eventually...
93 GQ wagon, RB30, extractors, 2 inch tough dog lift, 5 spd, A/T KO2 32's, steel winch bar, rated recovery points, red arc dual battery set up, rhino roof racks, UHF etc etc. Slow and steady might not win the race but it gets me there eventually...
RB30, some 2-3 inch lift auxiliary LPG tanks
Few more mods on the way
http://www.worldwildlife.org/species/tiger
https://www.panthera.org/
Cheetah Outreach
I would say that's the diff gear backlash play, 'cos you're producing the noise by turning the diff/drive shaft. But, judging from the video, I"m wondering whether it's showing bit too much backlash, which also means worn pinion bearing.
But, ideally, you should be able to feel a bearing play the same way you feel wheel bearing play by moving the drive shaft/flange in that manner. The noise is definitely backlash play and noise, but can't say for sure whether it's too much backlash and noise there.
Another important thing is that to feel the pinion bearing play properly, you need to make sure the drive shaft is freely moving and the gearbox/transfer is not engaged, etc.
I remember when I had the handbrake on and the gearbox was engaged(in gear) I couldn't feel any pinion bearing play at all. That 'cos the it tightens up the drive shaft.
So, make sure the transfer is not engaged and the hubs are not locked when you test the front diff pinion bearing for any play.
Also consider diff oil change/oil level check if you haven't done it yet.
RB30, some 2-3 inch lift auxiliary LPG tanks
Few more mods on the way
http://www.worldwildlife.org/species/tiger
https://www.panthera.org/
Cheetah Outreach
Patrol'n (16th November 2015)
Hey dom thanks for the reply mate, I think on re reading it my post mighta sounded a bit mechanically naive...
I agree it seems like backlash causing the noise in the video, what I was trying to say whilst tired and frustrated was that I wondered if it was too much / too loud, I have no experience repairing front diff / axles, only rear and wasn't sure if there were differences... I was wondering if it was excessive, whether that could be causing the noise when driving.
I had it in 2wd and hubs were unlocked in the video, when I tried to move it laterally as in your video, it felt tight so I wondered if the rotational noise could be it.
It was also only a couple of months ago that it got a full driveline oil change, (made a huge difference to the smoothness of the gearbox operation, particularly second when cold) :-)
A further update is I spoke to the mechanic today and he had tested it in 4wd with hubs locked, (safely of course), he said the noise disappears. (He even got a second opinion from his usual transmission specialist), I tested this about half an hour ago, and yep, sure enough with hubs locked and in 4wd it makes no noise now, other than a slight increase in general driveline noise, which I would expect with a transfer case and another diff operating.
So whilst that makes it seem that it should be ok, I still wonder why the noise occurs in 4high with hubs unlocked...
Can't figure it out, but given that generally I never drive in 4 high without locking the hubs, do I need to worry?
If I do I'll take E.T.s advice and talk to XLR8 about it.
93 GQ wagon, RB30, extractors, 2 inch tough dog lift, 5 spd, A/T KO2 32's, steel winch bar, rated recovery points, red arc dual battery set up, rhino roof racks, UHF etc etc. Slow and steady might not win the race but it gets me there eventually...
If the mechanic says it's ok with the aid of a transmission specialist's second opinion, I would leave it the way it is.
The noise you describe may be normal, 'cos the power is not getting transferred to the wheels and the front driveshaft, diff, axle, cvs turn on their own. So, excessive noise should be able to explain that way.
I wanted to put on 4H and drive and see if I get any noise as you describe, but can't 'cos mine won't be running until I finish the work I'm doing right now. Having said that, I think we are not suppose to drive it on highways with 4H or 4L on. I'll wait for somebody with more knowledge on that to post about that. One thing I can assure you is that if you drive with 4H engaged and hubs locked on highways(on a straight line), it will most certainly be noisier than 2H driving.
BTW, front and rear diffs work on the same way. Rear diff is more complicated 'cos it's an LSD. Front is usually an open diff, unless you have diff locker, etc.
If you've done rear diff, then you should be able to do the front diff with your eyes closed.
Last edited by dom14; 16th November 2015 at 09:39 PM.
RB30, some 2-3 inch lift auxiliary LPG tanks
Few more mods on the way
http://www.worldwildlife.org/species/tiger
https://www.panthera.org/
Cheetah Outreach
Patrol'n (16th November 2015)
93 GQ wagon, RB30, extractors, 2 inch tough dog lift, 5 spd, A/T KO2 32's, steel winch bar, rated recovery points, red arc dual battery set up, rhino roof racks, UHF etc etc. Slow and steady might not win the race but it gets me there eventually...
Quick update after a camping weekend with some wheeling along the way, all good, no noise and no vibrations. 😀
Cheers all for their input and assistance, would have driven me nuts if it hadn't gotten sorted!
93 GQ wagon, RB30, extractors, 2 inch tough dog lift, 5 spd, A/T KO2 32's, steel winch bar, rated recovery points, red arc dual battery set up, rhino roof racks, UHF etc etc. Slow and steady might not win the race but it gets me there eventually...