I have completed work on my front end and in the process of replacing my rear shocks. Of course the rear upper bolts broke off. This newsgroup had great advice regarding a repair by drilling thru the rear floor and installing nuts and bolts.(there was a nice link to a homepage) Before I try this I would like to know if anyone has had any luck with a tap.I have drilled out the bolts and the stock bolts are now a bit to small. The bit was 5/16ths. Is a Helicoil strong enought to use ?
Rear shocks
Nov 17, 2005
14 Replies
2000 Cherokee Sport 4L 95K,
2000 Cherokee Sport 4L 95K,
I have completed work on my front end and in the process of replacing my rear shocks. Of course the rear upper bolts broke off. This newsgroup had great advice regarding a repair by drilling thru the rear floor and installing nuts and bolts.(there was a nice link to a homepage) Before I try this I would like to know if anyone has had any luck with a tap.I have drilled out the bolts and the stock bolts are now a bit to small. The bit was 5/16ths. Is a Helicoil strong enought to use ?
If I had them that close, I would certainly pick at them first with the thought of getting the leftovers out. I usually try to use a bit slightly too small and try to just tag one spot of threads. I usually then can spin out the remainder with a pick or small screwdriver and hammer taps.
I also would for sure try the tap before cutting through the floor....
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail >I think I would feel a lot better about this to enlarge the hole to accept a
3/8" or 9 mm bolt and cut a set of new threads. And I would replace the bolts with stainless steel or make darn sure everything is well coated with anti-seize before it is reassembled.
What shocks are you using?
I have run into seized and snapped bolts 'way' to often over the years and have gotten really good at drilling them a bit smaller and peeling them out. I very seldom need a tap.... Well I don't own any for repair work, only a couple for manufacture of new things.
The heat that happens and the oil I use while drilling usually breaks the rest of the bolt free, especially if I can make it an exaggerated
1/4 moon shape. It damages one spot in the threads a bit, but I have never had a failure later on any I drilled. I use 'loctite' on ones that I dinged the threads on. It also is a type of antiseize compound.An alternator is always one that must be drilled larger from my experience...
Mike
Billy Ray wrote:
Mike, The problem is here that he has already drilled out the old bolt and the stock 5/16" are already too loose. If he does have any threads left the holes will be that much smaller when he gets done.
Ya ya, read it again eh...
I thought the hole was too small, read that arse backward.
There are high strength helicoils, he might be able to tap for one of them.
I don't think he can go bigger because the bolt has to fit the shock sleeve.
Mike
Billy Ray wrote:
Going thru the floor worked well. I wasted a lot of time trying to drill out the bolts,I got a air hammer and popped the weld nut in seconds. One thing I did differently was after popping the weld nuts and lifting the carpet I drilled 4 pilot holes(the bolt holes) from the underside. I then used a hole saw and drilled 4 small holes from the top to drop in the bolts.
Great idea!
What size hole saw?
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