Fabbed up tool for doing parking brake retaining springs - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
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Drivetrain - 2001 - 2010 Discuss front and rear axle, transfer case, brakes, etc. Transmission questions belong in the appropriate transmission forum below. First through fourth generation...

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Old 09-09-2019, 03:26 AM   #1 (permalink)
davester
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Fabbed up tool for doing parking brake retaining springs

As part of doing both the rear pads (worn to just before the wear tabs)

IMG_1454.jpg
and the rear shoes (one side was goo'd with oil from the hub seal failing)
IMG_1455.jpg


I found installing the parking retaining springs to be really annoying. The new ones area piece of spring steel shaped as a U, with a hole in one side and a slot in the other and are a nickel cheaper to make vs the older style (spring/washer with a slot in the middle).


The first side I got in after a bunch of time with a screwdriver, a big pair of visegrips, and needlenose pliers, and then I got thinking about making a task-specific tool for doing it, like the screwdriver-like tools you can buy for the older spring/washer style ones.


I was going to make the whole tool myself from scrap steel, but then came up with this idea:
IMG_1456.jpg
IMG_1457.jpg


I took the tool for doing the old style ones, and ground a slot in the face of it, and just wide and deep enough to catch on each side of the clip.


Using the tool, it's still more awkward than installing the old style, as you have to push and tilt the tool so it stays flat against the clip, then rotate it when the pin is through the slot, but it did go much faster than before. And the tool still works for the old style retaining springs as well.


Naturally, this is patent pending, and if you choose to use it, you must paypal me $5US...

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Old 09-09-2019, 04:21 AM   #2 (permalink)
davester
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And to follow up, when doing parking brakes (or really, if you pull the hub off), if you have big enough calipers, measure the ID of the drum, then adjust the shoes to match (or just a little smaller).


But then, before installing the rear hub seal (but with the bearing installed), put the hub on and see how the brake drags on it, remove the hub, adjust the brakes, and reinstall the hub to check. You can get the shoes adjusted very well, particularly if there isn't a lip on the drum, as while the driver's side shoes aren't too hard to adjust through the slot in the backing plate, the passenger side is harder to do with the spring pack in the way (at least, it is on my cab&chassis, as I need to use a mirror, a flashlight, and a custom-bent brake tool to do it, because there's just over an inch between the backing plate and the spring pack).

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