How many bolts are holding your bar on? It should be 6. 4 vertically in the original bumper holes and 2 horizontally through existing holes in the chassis rail. I can't see how it can rotate with the 2 bolts through the chassis rails.
G
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How many bolts are holding your bar on? It should be 6. 4 vertically in the original bumper holes and 2 horizontally through existing holes in the chassis rail. I can't see how it can rotate with the 2 bolts through the chassis rails.
G
Can you please post pics of the mounting brackets on your vehicle.
From outside side view and from outside forward to the bar.
Pictures of mounting pionts of an ARB bar that I put on around May 2013.
Did a lot of business around Moree to St George doing cotton gin refirbs.
The first cotton season I had the Defer, I hit Roos about a dozen times.
Two of them were big Roos at 100+K, foot still on the accelerator. :o
They just jumped out of the darkness.
Luckly all of them were front on and not into the side of the car. But the bar never flinched and had no damage to either bar or vehicle. Must say that my bull bar has paid for itself several times over. Oddly enough it did collect a lot of ears
Mount from the outside
http://www.aulro.com/afvb/attachment...8&d=1474357782
Mount from the inside
http://www.aulro.com/afvb/attachment...7&d=1474357782
Bar was installed by UV4x4 at Enoggerra , hope this helps
Cheers Glen
Thank you for those. Now if we can see Summiitts mounts we may be able to see what has taken place.
Thanks for the pic, mines mounted exactly the same. The first bar was fitted from new and rotated, this bar, also new, was fitted onto a brand new chassis so I'm doubtful it's a chassis issue.
Bolts were supplied on all occasions by ARB. I'm going to remove the bar and make sure the bolts used are as per specs. In the last hit, it sheared off the top horizontal bolt.
My only theory was that when the new chassis was fitted, the bar mounts weren't torqued correctly, bar slightly loose, a hit and the damage was done. I'm off road/dirt roads 70% of the time so anything that can come loose normally will, and my other 4 defenders have no issues with ARB bars, 2 in particular are getting 15-20 animal strikes a week between them.. this problem is however testing my patience with the product..
When fitted the horizontal bolt (top) is drilled on a larger diameter and is a snug fit.
Prior to that the whole bracket is to be forced down at the front and tightened.
I'll put money on it that the whole thing hasn't been fitted or torqued correctly.
I pulled the bar off this afternoon, and a few issues became apparent. The top horizontal hole on the chassis is elongated so much, it looks as though it has been drilled twice..which is what I'm thinking, and on the lower horizontal bolts, there were no washers against the steering guard, meaning the bolt had partially pulled through the gaurd..the chassis adaptor mounts only have a slight bend in the plating on one side, so can be reused.
2 options, drill new top bolts, and larger bottom bolts with washers, or try an old style 'commercial bar' from pre 08. The guys at ARB agree that this mounting system is crap compared to the previous style and the bar sits too close to the body.
Pretty clear your problem from the pics.Quote:
Originally Posted by Summiitt
Alternative option which some wont like but anyway...
Fit up the brackets with one bolt to the correct position and determine the actual correct centre.
Drill the dodgy holes oversize to suit a suitable piece of tube insert cut to the width of the chassis rail. eg tube ID for correct bolt size and drill for whatever the tube OD size is.
Once drilled this should give you a good fit and let you tap in the tube to the correct position. Weld the tube/s in place effectively creating a similar to factory style mount with crush protection and ensuring the bar wont pivot as per the original poor fitting.
Some wont like the idea of welding to the chassis but IMO is a permanent fix which isnt in a structurally critical position and the welds not of significant type or position to cause an issue.
Quote:
Originally Posted by strangy
I was thinking along the same lines......fixed for good.
Or insist ARB replace the bar, since it was apparently incorrectly mounted, possibly drilled twice, and without washers?
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