brake drum removal - Chevy Colorado & GMC Canyon

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Old 06-12-2010, 11:40 AM   #1 (permalink)
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Default brake drum removal

I had my wheels off recently and thought I would check for rear brake wear at the same time. The rear drums would not slide off the axle. Is there something I missed? There did seem to be a build up of surface rust around the end of the axle and wheel studs. I squirted the area with "break free" and hammered on the drum for a bit with no success. Is the drum rusted on?
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Old 06-12-2010, 12:07 PM   #2 (permalink)
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Default Re: brake drum removal

Silly question -- but did you have the parking brake on? I haven't had my canyon long enough to check it out myself, but on most vehicles the e-brake would engage the rear brakes, making it fairly impossible to remove the drums.
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Old 06-12-2010, 02:33 PM   #3 (permalink)
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Default Re: brake drum removal

Like sharkey44 said check the e-brake, you may need to back the brake adjuster off, and ther might be a couple little star washers over the whell studs to hold the drum on during assembly at the factory. Then hit the drum with a hammer inbetween the studs.
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Old 06-12-2010, 06:44 PM   #4 (permalink)
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Default Re: brake drum removal

I went thru the same situation just before Memorial Day when I checked my pads & shoes for replacement over the holiday weekend. Remove the star washers from the assy line, make sure the ebrake is off, you are correct about the rust on the drum & axle hub making things more difficult, but I believe the big problem is the shoes hanging on the "lip" worn into the drum. The correct way would be to remove the adjustment plug on the inside of the backing plate & loosten the star adjuster. As an alternative... I used 2 big flat screwdrivers to gently pry the drum off while my wife "tapped" on the axle hub with the BFH. Be careful not to damage the stud threads. On the up side... the other drum came off relatively easily.
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Old 06-12-2010, 07:44 PM   #5 (permalink)
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Default Re: brake drum removal

e-brake was off, the axle and and drum rotated freely. I did not see any star washers on the bottom of the wheel studs. I thought about the star washers and none are present. The drums are stuck solid, usually if the brake shoes are hanging up on the drum, you can get a bit of free play in the drum before it hangs up on the shoes. I'm not getting that slight free play in either drum.
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Old 06-13-2010, 12:06 AM   #6 (permalink)
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Default Re: brake drum removal

You may have enough rust on the drum hole/axle hub to seize the mating surface (mine were rusted badly) ... I have heard of using a torch to expand the drum... some other brake experts have input?

I swore that my right drum would never release... but after 10-12 licks with the hammer... it began moving a small amount.
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Old 06-13-2010, 01:36 AM   #7 (permalink)
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Default Re: brake drum removal

Spray the mating surface with Kroil or PB Blaster once a day for 4 days. Feel free to drive the truck during that time. Then try again with a BFH and a pair of hefty screwdrivers. When you reassemble it, put a light coat of anti-seize on the center hub where the drum center hole touches the axle.
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Old 06-13-2010, 03:08 PM   #8 (permalink)
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Default Re: brake drum removal

I wonder if a tool like this is available for rent...

http://www.eastwood.com/brake-drum-remo ... nAodE1pLyA
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Old 06-14-2010, 11:07 AM   #9 (permalink)
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Default Re: brake drum removal

I like the idea of soaking the **** out of the mating surfaces with parts penetrating fluid like PB. BFH hammer next, thanks for the advie. Like the Buell Blast custodian, have you seen the video about the bike from the now defunct company?
http://www.youtube.com/watch?v=JDsu93esQMc
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Old 06-14-2010, 10:19 PM   #10 (permalink)
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Default Re: brake drum removal

Oh yeah... the dramatic end of Blast production had many of us stoked about the possible replacement for the bike... hopefully using a BRP sourced motor like the 1125 models. The economy & HD management put an end to the entire Buell line instead.

Although much maligned on many owners forums... my 08 has been rock solid in 3 seasons & 4000 miles. Never has been back to the HD dealer... with all maintenance done myself. The 500cc single gives just over 50 mpg... & is great for around town travel. A single carb, hydraulic lifters, belt drive, Surlyn body panels... I may just keep it when I look at a larger bike next year. The Colorado will be paid off thie time next year... we have decided to keep it & look at a microcar for better fuel economy.
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