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SidecarFlip

SE Michigan

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Joined: 10/09/2016

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Posted: 01/08/18 08:18pm Link  |  Quote  |  Print  |  Notify Moderator

I do my own brakes and have for years on my truck and trailers. One of the sticking points I've found is breaking loose rust seized on brake rotors on disc brakes.

No amount of beating or heating seems to loosen them (at least in my case) and I've had to resort to using a 5 pound sledge and serious beating to get them off (at the expense of suspension parts until now that is..

A good friend of mine who is a professional mechanic by trade pointed me toward his method and it works like a charm

I bought a Harbor Freight 12 ton hydraulic puller (70 bucks at HF). It's jaws fit over any disc (fit my F350 discs with room to spare) and you set it up (3 jaws on the disc), align the body with the center of the hub, run it in tight, apply a squirt of penetrant to the hub and 3 strokes of the hydraulic cylinder and the disc pops right off, easy as pie. Great tool and saves a lot of grief. It actually has enough hydraulic force to break a disc off the hub if you want to do that but with me, they popped right off. Sure made a miserable job a cake walk.

Little FYI for those of you that do their own maintenance, like me.


2015 Backpack SS1500
1997 Ford 7.3 OBS 4x4 CC LB

westend

Shorewood, MN

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Posted: 01/08/18 08:31pm Link  |  Quote  |  Print  |  Notify Moderator

Good tip!
My truck rims are aluminum and tend to stick on the steel hubs. The first time I tried to remove them with an 8 lb maul and blocks of wood. My truck mechanic buddy reminded me that heating is easier. I now heat the rim and then throw a cup of water on the rim near the hub. The dissimilar metals heat and cool at different temps so the rim literally falls off the lugs, occasionally.


'03 F-250 4x4 CC
'71 Starcraft Wanderstar -- The Cowboy/Hilton

rickhise

home

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Posted: 01/08/18 08:33pm Link  |  Quote  |  Print  |  Notify Moderator

My issue is keeping it square starting it in
Because of android rod (so)

SDcampowneroperator

South Dakota

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Posted: 01/08/18 08:46pm Link  |  Quote  |  Print  |  Notify Moderator

disc brake caliper bolts do seem to lock tight up regardless of torque. Long wrenches, hyd. Jacks big hammers are often needed to break them loose.

Never Seeze on the threads is the next mechanics dream come true.

TakingThe5th

Chicago - Western Suburbs

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Posted: 01/08/18 08:51pm Link  |  Quote  |  Print  |  Notify Moderator

westend wrote:

Good tip!
My truck rims are aluminum and tend to stick on the steel hubs. The first time I tried to remove them with an 8 lb maul and blocks of wood. My truck mechanic buddy reminded me that heating is easier. I now heat the rim and then throw a cup of water on the rim near the hub. The dissimilar metals heat and cool at different temps so the rim literally falls off the lugs, occasionally.

Before I re-assemble rim to hub, I paint the hub with anti-seize compound. I usually don't have a torch, a heavy maul, or any sense of patience when I'm changing a flat tire and this works for me. The anti-seize compound stays in place on my dually for a year or more.


TakingThe5th - Chicago, Western Suburbs
'05 Ford F350 Crew 6.0 DRW Bulletproofed. Pullrite Super 5th 18K 2100 hitch.
'13 Keystone Cougar 333MKS, Maxxfan 7500, Progressive EMS-HW50C, Grey Water System.


Blacklane

New Carlisle, Ohio USA

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Posted: 01/08/18 09:15pm Link  |  Quote  |  Print  |  Notify Moderator

SDcampowneroperator wrote:

disc brake caliper bolts do seem to lock tight up regardless of torque. Long wrenches, hyd. Jacks big hammers are often needed to break them loose.

Never Seeze on the threads is the next mechanics dream come true.


Most caliper bolts have loc-tite on them. You need to heat them a little (just a propane torch will do) to break them loose.

https://www.youtube.com/watch?v=Z9zFgB8lTNM

SidecarFlip

SE Michigan

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Posted: 01/08/18 09:31pm Link  |  Quote  |  Print  |  Notify Moderator

westend wrote:

Good tip!
My truck rims are aluminum and tend to stick on the steel hubs. The first time I tried to remove them with an 8 lb maul and blocks of wood. My truck mechanic buddy reminded me that heating is easier. I now heat the rim and then throw a cup of water on the rim near the hub. The dissimilar metals heat and cool at different temps so the rim literally falls off the lugs, occasionally.


So are mine (Alcoa) and they used to stick. I use never seize on the rim mounting face now. I've been told that the spray battery corrosion inhibitor works too, but never tried that. Use a paper towel and wip a very small amount of never seize on the rim mounting face.

SidecarFlip

SE Michigan

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Posted: 01/08/18 09:35pm Link  |  Quote  |  Print  |  Notify Moderator

Blacklane wrote:

SDcampowneroperator wrote:

disc brake caliper bolts do seem to lock tight up regardless of torque. Long wrenches, hyd. Jacks big hammers are often needed to break them loose.

Never Seeze on the threads is the next mechanics dream come true.


Most caliper bolts have loc-tite on them. You need to heat them a little (just a propane torch will do) to break them loose.

https://www.youtube.com/watch?v=Z9zFgB8lTNM


Ford caliper bolts have locking patches in the threads (at least mine do) but my IR 'Thundergun' usually winds them out.

SidecarFlip

SE Michigan

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Posted: 01/08/18 09:42pm Link  |  Quote  |  Print  |  Notify Moderator

rickhise wrote:

My issue is keeping it square starting it in
Because of android rod (so)


Not following but the 3 jaws of the puller align the center ram with no input from the user. Once the puller is in place and tension applied to the jaws, it becomes immovable until the disc breaks free of the hub. I average 3 pumps of the handle and wham, off comes the disc.

Nice thing about the puller is it don't mar the disc face like hammering on it does so it is possible to get them refaced if you have enough thickness left.... or you don't break the disc in two.

theoldwizard1

SE MI

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Posted: 01/08/18 11:07pm Link  |  Quote  |  Print  |  Notify Moderator

SidecarFlip wrote:

I do my own brakes and have for years on my truck and trailers. One of the sticking points I've found is breaking loose rust seized on brake rotors on disc brakes.

WOW ! I can't believe you have not this method to remove stick rotors. It will take a little longer but you won't have another tool that you only use once in a blue moon !

Sadly, no such simple method works for stuck brake drums. This is THE TOOL for stuck brake drums. OTC 6980 Brake Drum Puller

[image]


Don't feel too bad. 50 years of shade tree wrench twisting and I only learned this about 20 years ago.

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