Wally
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Crown Wheel Bolts coming loose with locker.
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Crown Wheel Bolts coming loose with locker.
All the crown wheel bolts came loose and fell out and mashed up in my back diff ( GU diff centre/ARB locker ) made quite a mess. I fitted the locker and and used loctite 262 and Primer "T" on the bolt threads and they came loose. If it wasn't for a job i done last week on the front diff of a fulltime 80 series that all the crown wheel bolts came out and destroyed the diff and locker ( dont know who fitted the locker ) are the only ones ive heard of this happening. Ive been fitting Air Lockers for over 15 years and never had it happen before. A bit disturbing as it was fitted correctly and they came loose. Im drilling the heads of the bolts this time and lock wiring as an extra precaution. I know 80 fronts and Hiluxs have locking tabs on the crown wheel bolts STD but are discarded when fitting a ARB locker and use Loctite to secure the bolts but on Nissan diffs they only use Thread Locking compound. Has any one had this happen also
Wally
Wally
THERES ONLY ONE SUBSTITUTE FOR CUBES AND THATS MORE and if you want more inchs stroke it !!!!!!!!!!!
happened to m,y daily driver also, except the locker had been in for some where around 15 years or so before they came loose
when one of my bolts came out, it took a chunk of the crown wheel mounting surface of the locker with it, but i used metho to wash out the bolt holes and loctited it all back up, hasnt had a dram since,
]
when one of my bolts came out, it took a chunk of the crown wheel mounting surface of the locker with it, but i used metho to wash out the bolt holes and loctited it all back up, hasnt had a dram since,
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there are a few things that might cause this. Overtorqueing the crownwheel bolts causes distortion of the crownwheel itself and the thin flanges, which can cause minute oscillations as the diff rotates under load. Pulling the crownwheel on with the bolts instead of heating it and dropping it over the centre will definitely cause it. excessive or insufficient carrier bearing preload will also cause it. This can be an install time problem, or an issue of big tyres, generous power or a combionation of. It's not a common problem but it does happen. Drilling the bolt heads and adding lock wires will only prolong the inevitable if it's going to happen.
Daniel Bongard of ARB might have more tips for avoiding this failure.
cheers
DD
Daniel Bongard of ARB might have more tips for avoiding this failure.
cheers
DD
Free air locker to the first 20 callers!
Well, Wally doesn't have generous power or big tyres so it can't have been that 
Sorry for not adding any tech... couldn't resist.
Have seen the bolts come loose that clamp the centre together on the 4 gear sierra diffs when welded, but not crownwheel bolts.
Steve.
Sorry for not adding any tech... couldn't resist.
Have seen the bolts come loose that clamp the centre together on the 4 gear sierra diffs when welded, but not crownwheel bolts.
Steve.
[quote="greg"] some say he is a man without happy dreams, or that he sees silver linings on clouds and wonders why they are not platinum... all we know, is he's called the stevie.[/quote]
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