How to:  Convert drum to disk trailer brakes

This thread will document swapping out my drum brakes and actuator for new Kodiak disc brakes and a Tiedown 70E actuator with built in reversing solenoid.  The weather is forecast to be cold and I'm really busy at work, so this is going to take a few days.  I'll be adding pics and dialogue as I progress through the project.  Last night was the first step, receipt of the goods.

trailerbrakes.jpg


On the first side, I had already started disassembly as part of diagnosing my original problem.  I had the boat jacked up and the wheel tire removed already.  Any fasteners to be removed were “pre-soaked” in PB Blaster.  Step one started like this:

KodiakBrakes003.jpg


There aren’t many parts in disk brakes.  The hub / rotor are one piece, then there is the caliper and caliper mounting bracket.  That’s about it.  These brakes come with new bearings and the races are already pressed in.  The hammer and block of wood shown were used to press in the rear seals.

KodiakBrakes005.jpg


The entire drum brake assembly is removed by removing the 4 bolts that go through the brake mounting flange on the axle.  After the flange was cleaned up with a wire brush, the new caliper mounting bracket is bolted on.

KodiakBrakes018.jpg


The next step is to install the hub / rotor assembly and the outer bearing.

KodiakBrakes007.jpg


Now I installed the provided dust cover.  Kodiak supplies a nice piece that can be used with grease or oil bath.

KodiakBrakes008.jpg


Nearing the end of side one, the caliper is mounted with two bolts, which are the “caliper slides.”  I gave these a light coating of high temp grease.

KodiakBrakes009.jpg


The next two photos show the brake line modifications.  The drum brakes had hard lines running to them.  Because the calipers slide, they had to use flex hoses.  Thanks go to Gibbons Auto Parts in Pocomoke, MD.   When I went to the counter and told them what I was trying do, they got me setup with what I needed.  Try that at your big box store...

KodiakBrakes010.jpg


KodiakBrakes011-1.jpg


Side one is complete now.

KodiakBrakes012.jpg


Side two is much of a duplicate process.  I used “never-seize” on all hardware possible and grease most everywhere else.

KodiakBrakes013.jpg


KodiakBrakes014.jpg


KodiakBrakes015.jpg


Drum brakes have a lot of parts compared to the three components of the disks.

KodiakBrakes016.jpg


This pic shows a dust cover preloaded with grease and ready to be installed.

KodiakBrakes019.jpg


The next pic is of the hub / rotor installed and packed with grease.  When I pack my hubs there is no air void left.  I don’t use “bearing buddies.”  I feel that as long as my grease doesn’t get out, no water is getting in.

KodiakBrakes020.jpg


The TieDown Engineering Model 70 actuator is a nice piece.  Most agree that their brakes suck, but they make a nice coupler.  Note the safety pin right behind the ball.  When the pin is inserted the coupler can’t come off the ball, even if it comes unlatched up top.  This model also has s built in reverse solenoid.

KodiakBrakes024.jpg


KodiakBrakes023.jpg


And this project is complete.  It was a gray and rainy morning, but we got the job done.  I’m home from a 40 mile test ride in one piece, and I managed to fill the boat up with gas while I was out, so add another $75 to the project total.

KodiakBrakes022.jpg


Airslot, out
 
Air I don't have one of those fancy avitars like MJ but I agree it is a job well done and documented. I dont have brakes but your post made it look like I could do it if I did. Nice Job. ;)
 
Thank you gentlemen. :)

Really, anybody that owns one of these not new boats probably has ammased the technical ability to do this project. I left out a few things, but not much. I should have documented packing the bearings, but grease and camera were kept seperate. I also ran into a snag bleeding the brakes, but that was due to a "two piece bleed screw" that I missed. One piece was emmbedded in the other.
 
Re: How to:  Convert drum to disk trailer bra

GREAT documentation, Slot!!...good job ;) ...

The two-piece bleeder problem...was that a ''speed-bleeder'' you showed?...

Ya might wind up ''rethinkin'' the ''no grease out, no water in''...if you dunk 'em, water's GONNA get in there and some grease GONNA get past those seals goin' down the road over time...with no way to displace the water that DOES get in, it'll turn milky and less effective...I've used Bearing Buddies for years with good result...trick to those is don't ''over grease''...soon as piston moves slightly, STOP ...I use a flexible nozzle on the grease-gun so can see the movement unrestricted... JMHO ;) ...

Good job on that retrofit, Slot...you really gonna like 'em. ;D 8) ...THANKS for the pics!! 8) ...
 
Great work Air, I'm gonna need to do mine again soon (this or next year) so I'm looking at doing something quick and with as few headaches as possible. Drum breaks are a pain and headaches when changing.
 
Sorry REEL, no pics of the bleeders, guess I forgot a few things along the way. As for the hubs, I've seen more damage by the overzealous use of grease guns than by not greasing. That said, you do it the right way. I'll bet that 80% of people w/ bearing Buddies add grease every trip. Where does that grease go? My hubs never get dunked. I back the trailer in until the rear hub is nearing the water. After that, the boat rolls off the trailer and Mr. 912 Power Winch handles the loading chores.

Airslot
 
Re: How to:  Convert drum to disk trailer bra

Slot, you posted the SPEED BLEEDERS...I's wonderin' if those were the 2-piece bleeders you mentioned a problem with?...

...and you're RIGHT...if you're not dunkin' your hubs, regreasin' is not as big an issue ;) ...
 
Re: How to:  Convert drum to disk trailer bra

I use to use buddy's and they worked great!! But I love looking at all the fools that grease every time with more grease on the back side of there tires then they have in there berins!

My new trailer has super hubs or something like that? But any way what you do is pump grease Thur a fitting that goes Thur the spindle and pushes the old grease from the back to the front, just wipe it up and you good to go!
 
Re: How to:  Convert drum to disk trailer bra

Welp...no doubt there's some slung grease inside my wheels and yep, I ''touch 'em up" each trip (1.5 hrs on interstate) , but only as described above ... rather have wheels a little dirty inside than broke down on I-85 :P ...leavin' my "V" in the emergency lane and goin' off lookin' for bearing, etc ain't exackly, uh...reelapeelin', if ya know what I mean... ;) ...


My hubs get dunked on every load/ unload and boat power-loaded ;D ...
 
REEL, going back to my bleeder problem, it was all on me. After I was done I called Kodiak to talk to them about my problem. They explained to me that the actual bleed screw was screwed into the brass fitting that threaded into the caliper. I was working the whole thing as opposed to the smaller bleed screw...Hope that made sense. The bottom line...it was my fault and I got to talk to a reel sweetheart in Texas. ;D

Airslot
 
Re: How to:  Convert drum to disk trailer bra

Glad ya got to the bottom of the problem...now if ya could just get to the bottom of that Texas Sweetie :o ... 8) ...
 
Re: How to:  Convert drum to disk trailer bra

This on THT...

I have a 2004 Sealoin trailer with brakes. I like it now, but it did give me a large problem in my 2nd year. The brake actuator was mounted to the frame with two, large, through bolts. After towing for one season I started to hear a squeak from the trailer. Thinking it was the springs, I didn't think to much about it and kept on towing. One day, after a long day on the boat, I backed in my yard and saw the front bolt had ripped though the frame. Yea, oh Sh*@, is right! I took some pictures of it and sent them into Sealion. It took some time, but they did send replacement parts. I had to fix it myself because Sealion didn't have anyone in the area to fix it and the trailer was unsafe to tow to them. Besides, the boat was still on the trailer! I now have three bolts holding it. Two in front, one on each side of the actuator and frame and one through bolt in the rear. This year I am going to put a piece of tube in the frame on the rear bolt so I can use my impact on it and really make it tight & not collapse the whole thing. The two bolts in front, let me put some torque on them without collapsing the frame or the actuator, because they are not through bolts. If I used a through bolt and tighten it, the brake actuator could get pinched & not slide properly. I strongly suggest every one puts two bolts in the front. One on each side, instead of a through bolt.






Hey Slot...might wanna think about a little welding...I did ;) ...
 
REEL, I read that on THT. Good points moade for sure. There are 4 mounting holes in my actuator. I'll make use of all 4. Don't know about welding, sure glad my last one wasn't welded...

Airslot
 
Re: How to:  Convert drum to disk trailer bra

The actuator on mine before had 4 beads in strategic places...took a side-grinder to those and she popped right off... ;D ...and the newest one's got the same weld points ;) ...







Hey...you did prime the damper on that new actuator, dinya?... ;) ...
 
Why yes sir, my damper was pumped and primed. ;) No banging or jerking starting or stopping. All in all, I couldn't be any happier with the finished project.

Another point, your not supposed to use stainless bolts to attatch the actuator. Grade 5 Hardened is the ticket here.

Airslot
 
Re: How to:  Convert drum to disk trailer bra

Airslot said:
All in all, I couldn't be any happier with the finished project.

Another point, your not supposed to use stainless bolts to attatch the actuator. Grade 5 Hardened is the ticket here.



I'm real happy w/ this actuator...think you'll be too...totally agree w/ your choice of thru-bolts, but concerned about scenerio like the THT post...holes COULD (not sayin' they will) waller out...just felt like a little "melted-metal'' would help, but I usually lean toward overkill on somethin' like this
;) ...
 
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