Question about Harley Davidson Motorcycles
Do I need to remove the rear wheel in order to change my rear brake pads or does the caliper split by removing the three pins to allow for this
Posted by Anonymous on
DO NOT REMOVE THE WHEEL AND DO NOT SPLIT THE CALIPER.
After servicing the brakes in any way and before moving the motorcycle always pump the brakes to build brake system pressure and move the pistons and pads out against the brake rotor.
First remove the rear master cylinder reservoir cap and check the fluid level because as the pistons are pushed back into the caliper the fluid level will rise and you do not want it to overflow the reservoir and spill out and to avoid this you must remove sufficient fluid.
Second, loosen, but do not remove, both pad pins with a 12 point .025 inch socket wrench.
Thirdly pry the inside pad back using steady pressure and a sturdy scraper or large screw driver or similar suitable tool, prying between the pad and the brake disc in order to push the caliper pistons back into their bores.
Fourthly, once the pistons have been fully retracted into their bores, pull the pad pins out part way only until the inside pads drop free.Do not completely pull the pad pins out from the caliper at this time because completely removing the pad pins at this time will cause you unnecessary difficulty during re-assembly. ALSO carefully note and remember each pad's original orientation for so you can put the new pads into the correct position and orientation in the caliper. Note that the front left, and the front right (if the front right is present) and all of the rear brake calipers use the same exact brake pad set. Install the pad with two tabs on the inboard side of the rear caliper.
Fifthly install the new inside brake pad using the same orientation as the pad previously removed (with the curved portion of the pad facing the rear of the motorcycle.
Sixthly install the pad pins until the pins snap into place with an audible click but do not fully tighten them at this time.
Next pump the brake pedal lever to move the inside pistons out until they contact the inside brake pads and then pry the outside pad back to push the caliper pistons back into their bores and verify that the inside pads have been captured between the brake disc and the pistons. At this point you can completely remove the pad pins to free the outside brake pad. Again note the pad's original orientation for replacement purpose and orientation
.While the pad pins are out inspect them for grooving and wear and measure the pin diameter in an unworn area, and then in the area of any grooving or wear, and if wear is more than 0.015 in. (0.38mm), replace both pins.
THEN install the new outside brake pad using the same orientation as the pad previously removed and if the inside pad moved during the previous step, reinstall it with the curved portion of the pad facing the rear of motorcycle.
THEN install both pad pins through holes in the inner and outer brake pads and tighten them to 180-200 in-lbs which is (20.3-22.6 Nm).
THEN pump the brake pedal to move the pistons out until they contact both of the brake pads and verify the correct piston location against the pads.
THEN check the brake fluid level in master cylinder and fill it up to the correct level if necessary using ONLY D.O.T. 5 SILICONE BRAKE, install the master cylinder reservoir cap and tighten the reservoir cap screws to 6-8
in-lbswhich is (0.7-0.9 Nm).
WHEN the bike is completely back together test the brakes at low speed in a safe area and also confirm that the brake light works properly and if the brakes feel at all spongy bleed them properly until a hard not spongy brake pedal is obtained. AND avoid making hard stops for the first 100 miles (160 km) to allow the new pads to condition to the brake rotors.
Posted on Oct 16, 2014
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Posted on Jan 02, 2017
SOURCE: changing rear brake pads..
if the 04 is the same as my 05 ultra (and i belive it is) the rear caliper can not be removed with out pulling the axel out, and taking the 3 big star bolts out will split the caliper in half, (it is a 2 peice)
take the 2 small star bolts out, use a stiff putty knife to push the pistons back, before you pull the old pads out, make sure you take the cover off the master, slip new pads in, start with the frount and put the bolts thru to hold it then the rear
when you retighten the bolts you want the hear a "pop" that means the rear tip of the bolt is past the retaining spring, if you dont hear a pop the bolts will work there way out, (found this out the hard way, $129 new rotor, $195 new caliper)
Posted on Nov 16, 2009
SOURCE: Stuck Brake Pad Pins
I suggest pulling the axle out a bit to allow the caliper assy more freedom of movement. Then see if you can get the pins out. If not, you can put something (like a piece of wood) between the pistons and the rotor on the outside and gently pump the pedal to see if that does in fact loosen the pins. But a more fundemental question: is the new floating rotor the EXACT diameter as the OEM (or whatever was on there) rotor? It sounds to me like the rotor is jammed against the pins. If it is the same size, are the new pads the same shape as the old ones (same profile on the metal backing)?
Posted on Nov 20, 2008
SOURCE: can not blead rear brakes
I had the same problem, just give the brake fluid a couple of days to settle and bleed the back brake a few times and all should be fine, unless the seals are damaged in the caliper.
Posted on Aug 26, 2009
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