Caliper bracket removal
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Freshman User
Joined: Feb 2007
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Caliper bracket removal
I'm trying to remove the rotors on my 98 Expedition 4x4 and have them turned, but can't seem to get the caliper bracket removed. I've tried to remove the bolts by hand and by impact wrench with no luck. These bolts aren't threaded backwards are they? The rotors are loose and free (new rotors last year), just those 4 bolts that stand in my way. Any suggestions?!
Tuned
Joined: Mar 2011
Posts: 411
Likes: 7
From: Proctorsville VT
My air impact did not work either. 1/2" breaker bar is necessary, ideally without pipe leverage. There is thread lock on these bolts that need a heavy turn to break. Be sure your jack stand is solid.
Book says that new bolts should be used as replacements. These are recently available at Napa and have thread lock pre-applied. I reused the old bolts and was unpleasantly surprised to lose one at highway speed. Heard it fall off. Luckily I avoided disaster when braking to a stop, but wound up with score damage to the passenger side rim. Needless to say I check the torque on them often since that day.
If you reuse the old bolts, torque 'em down to spec and use thread lock.
Book says that new bolts should be used as replacements. These are recently available at Napa and have thread lock pre-applied. I reused the old bolts and was unpleasantly surprised to lose one at highway speed. Heard it fall off. Luckily I avoided disaster when braking to a stop, but wound up with score damage to the passenger side rim. Needless to say I check the torque on them often since that day.
If you reuse the old bolts, torque 'em down to spec and use thread lock.
Posting Guru
Joined: Oct 2006
Posts: 1,083
Likes: 0
lost a caliper bolt
My air impact did not work either. 1/2" breaker bar is necessary, ideally without pipe leverage. There is thread lock on these bolts that need a heavy turn to break. Be sure your jack stand is solid.
Book says that new bolts should be used as replacements. These are recently available at Napa and have thread lock pre-applied. I reused the old bolts and was unpleasantly surprised to lose one at highway speed. Heard it fall off. Luckily I avoided disaster when braking to a stop, but wound up with score damage to the passenger side rim. Needless to say I check the torque on them often since that day.
If you reuse the old bolts, torque 'em down to spec and use thread lock.
Book says that new bolts should be used as replacements. These are recently available at Napa and have thread lock pre-applied. I reused the old bolts and was unpleasantly surprised to lose one at highway speed. Heard it fall off. Luckily I avoided disaster when braking to a stop, but wound up with score damage to the passenger side rim. Needless to say I check the torque on them often since that day.
If you reuse the old bolts, torque 'em down to spec and use thread lock.
Posting Guru
Joined: Oct 2006
Posts: 1,083
Likes: 0
caliper bracket removal
I'm referring to the 2 bolts that retain the bracket.
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Tuned
Joined: Mar 2011
Posts: 411
Likes: 7
From: Proctorsville VT
Ya got caliper mounting bolts and caliper anchor bracket bolts, using Haynes Manual language. The caliper mounting bolts are the slimmer and smaller ones that are easy to remove (21 to 26 ft-lbs). The caliper anchor bracket bolts are the larger ones that are thread locked and need a breaker bar to remove (136 ft-lbs).
The potential for disaster is losing one of the bracket (larger) bolts. The entire bracket pivots on the remaining bolt and can quickly destroy a rim from the inside out. Spectacular front wheel failure is possible when this happens.
The potential for disaster is losing one of the bracket (larger) bolts. The entire bracket pivots on the remaining bolt and can quickly destroy a rim from the inside out. Spectacular front wheel failure is possible when this happens.
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Tuned
Joined: Mar 2011
Posts: 411
Likes: 7
From: Proctorsville VT
NAPA AUTO PARTS
Was sent to dealer parts counter from Napa in January. They never heard of this bolt before. The damned thing practically fell off the rack in front of me later on in March.
Was sent to dealer parts counter from Napa in January. They never heard of this bolt before. The damned thing practically fell off the rack in front of me later on in March.
Fleet Owner
Joined: Apr 2008
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gregrw
1997 - 2006 Expedition & Navigator
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