Hard Brake Popping - Defender Source
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  #1  
Old December 21st, 2006, 08:32 AM
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Hard Brake Popping

Any ideas of what would cause a popping sound when I brake hard? My D110 makes a loud pop sound when I brake hard. There is another pop sound that will follow a hard brake once I start to accelerate fast. The sound is comming from the front under the driver's side.
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  #2  
Old December 21st, 2006, 09:40 AM
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14 year old radius arm bushings?
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  #3  
Old December 21st, 2006, 11:36 AM
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Bingo!
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  #4  
Old December 21st, 2006, 12:45 PM
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Thanks guys!!!!!!!!!!!!!!

I just ordered new ones!!!!!!!!!!!!!!!!!!!
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1995 NAS Defender 90 AA Yellow #2986: Current
2009 Range Rover Supercharged Black/Black: Current

1993 NAS Defender 110 #375/500: Sold
1995 NAS Defender 90 Soft Top Beluga Black #2556: Sold
1991 Range Rover Hunter Green: Sold
1997 NAS Defender 90 Station Wagon Portofino Red #128: Sold
1993 NAS Defender 110 Beluga Black #215/500: sold
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  #5  
Old December 21st, 2006, 01:38 PM
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Jim C.
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If you replace both ends of the radius arms, both ends of the trailing links, and both ends of the pan-hard rod, you will think you're driving a Ferrari.

J(Ferrari driver)C
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  #6  
Old December 21st, 2006, 01:54 PM
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Jim Cheney
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Please check your caliper bolts too - you will get a noise on braking if they start to loosen - and you'll get a very exciting experience if one of them backs out completely...
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  #7  
Old December 21st, 2006, 07:11 PM
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Not to bring the energy down but I had a 110 that made one pop on harsh decel to a stop and then one pop again after starting to move. It could be repeated easily. This was a result of the output shaft on the manual trans splines wearing. The noise was the main shaft of the trans slapping against the input of the t-case. This is probably not what you are experiencing but after checking and replacing a lot of bushings and u-joints I found this to be my problem. There was an updated input shaft for the t-cases that helped it to be lubricated introduced this area in the late 90s but by the time I found this out I needed to replace the main shaft of the tranny.
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  #8  
Old December 22nd, 2006, 08:45 AM
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Thats usually more of a "clack" than a "pop/ping" and it usually is associated with getting on and off the gas. He said this noise is a "pop" and coming from the front wheel area and is associated with braking. It is impossible to internet diagnose anything, but from his description, loose or bad radius arm bushings would be the first place to look.
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  #9  
Old December 22nd, 2006, 12:15 PM
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I tightened the radius arms and the Pop seems to have stopped. I have a skid plate that covers the whole front axel that mounts to the bolts on the radius arms. There is barely enough threads left on the bolt to clear the nut. I got a full turn on each bolt!


Thanks again everyone for the great advise.
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1995 NAS Defender 90 AA Yellow #2986: Current
2009 Range Rover Supercharged Black/Black: Current

1993 NAS Defender 110 #375/500: Sold
1995 NAS Defender 90 Soft Top Beluga Black #2556: Sold
1991 Range Rover Hunter Green: Sold
1997 NAS Defender 90 Station Wagon Portofino Red #128: Sold
1993 NAS Defender 110 Beluga Black #215/500: sold
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