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Post by matt4u2 on May 20, 2004 20:01:41 GMT 11
does anybody here know the rating one the standard tow hooks on a 95 MU?  cheers, Matt |
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Dave
Isuzu Senior
Posts: 169
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Post by Dave on May 21, 2004 8:57:53 GMT 11
If its anything like my Bighorn, then its probably not adequate for snatch recovery as has been pointed out to me.
Mine use 10mm factory bolts, where I have been told 12mm are minimum.
Might find more info under the Safety section here.
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Post by Andrew on May 21, 2004 9:02:46 GMT 11
These are the std factory hook fitted with 8mm bolts.
While ok for basic recovery the new club guidlines would make attendance on med / hard tracks a no go..
My advice.. invest ( and yes it is an investment ) in new hooks with 12mm bolts. I know in Wn you can purchase and get fitted new hooks for $75.00.
Well worth it when you see what can happen when a hook lets go...
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Post by Yarno on May 21, 2004 14:05:38 GMT 11
These are the std factory hook fitted with [glow=red,2,300]8mm bolts.[/glow]While ok for basic recovery the new club guidlines would make attendance on med / hard tracks a no go.. My advice.. invest ( and yes it is an investment ) in new hooks with 12mm bolts. I know in Wn you can purchase and get fitted new hooks for $75.00. Well worth it when you see what can happen when a hook lets go... They have actually got 10mm bolts in them standard!! |
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Post by mudgrip4 on May 21, 2004 16:24:59 GMT 11
The critical thing with the hooks is to use 8.8 standard hi tensile 12mm bolts or better - ideal torque for bolts is 57 ft/lbs to avoid looseness and elasticity.
Good also to attach bolts right through chassis member - they are known to rip out of just one side of the chassis strut. Can be difficult on Isuzus and an engineering opinion may help if you can't readily get right through strut.
Was talking with a clubbie cobber yesterday who told me he was in a tandem snatch tow to pull a heavily stuck Nissan LWB out of deep river silt and his tow hook completely opened out. Thank heavens his bolts didn't let go! No damage at the time but the force needed for this to happen may have been around 9-10,000kg. Hence the stiff requirements on us re safety setup. We need it..!! Mike A.
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