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What is the trick to getting these retainer bolts loose? Have tried impact gun, tried long breaker bar hitting their mount with hammer nothing seems to work! trying to install new rotors and pads. On 04 FX4.
Penetrating fluid, and then heat if that doesn't work. A few days before brake or suspension work i would also hit the fasteners i'm removing with PB Blaster a few times a day to give the best chance. Everything rusts up pretty easy down there
I Just had to remove front caliper bolts on my 550 for a 4wd front end swap. I put an 18" long 1/2" breaker bar on there with the appropriate socket and used a cheater bar. Think it was my jack handle. It worked but was still a bit tough to get off. PB Blaster for sure.
I've told this before. One of my guys, stoutly built, with a Superduty on a lift at the proper height, following our company EHS safety rule and methods, tore through a biceps tendon removing one of those bolts. EHS working procedure was rewritten so we could only remove those bolts with an impact, usually a really good 1/2" or a 3/4" air impact at 100psi. It was us in the facility that all agreed to that change.
Ok guys thanks, finally got them loose and now have been waiting on tech support from the place I ordered everything (3hrs so far). The new pads were not drilled for the separator springs and they have not gotten back as to whether they sent wrong pads or the springs are not required! They indicated I orered wrong stuff but it was their recommendation of what I ordered!
Again thanks, have 1 side apart waiting on their reply.
I've told this before. One of my guys, stoutly built, with a Superduty on a lift at the proper height, following our company EHS safety rule and methods, tore through a biceps tendon removing one of those bolts. EHS working procedure was rewritten so we could only remove those bolts with an impact, usually a really good 1/2" or a 3/4" air impact at 100psi. It was us in the facility that all agreed to that change.
Heat on the threaded end to help break down the locking compound
and a 1/2" impact wrench works wonders. Most of the penetrating oils
won't do you any good when thread locking compound is used.
But if I am using penetrating oil (Kroil my favorite) I like to do the heating
first then spray the oil on the bolt to cool and draw the oil in any openings.
Then take the impact and whack the snot out of it.
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front caliper bolts
