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techtalk:ih:wheels02 [2020/05/26 22:50] hippysmack [Rear Brake Pedal Stop] |
techtalk:ih:wheels02 [2020/05/29 03:45] hippysmack [Brake Disc and Pads] |
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| Line 58: | Line 58: | ||
| - | **Front Calipers** | + | **Front Caliper** |
| * Banana | * Banana | ||
| * 1973 XL, FX Models | * 1973 XL, FX Models | ||
| Line 69: | Line 69: | ||
| * 1977-1979 FXS | * 1977-1979 FXS | ||
| * 1978-1983 FX, XL | * 1978-1983 FX, XL | ||
| - | * Semi Torque Free | + | * Semi Torque Free Kelsey Hayes |
| * 1983-1985 XR1000 | * 1983-1985 XR1000 | ||
| * 1984-up All models except FLH | * 1984-up All models except FLH | ||
| Line 93: | Line 93: | ||
| * 1983-1984 and 1987 FLHS | * 1983-1984 and 1987 FLHS | ||
| + | ====== Brake Disc and Pads ====== | ||
| + | From HD Teschnical Service Bulletin M-712 dated Junw 16, 1977: \\ | ||
| + | //Disc brake friction material can be classified as organic, semi-metallic, or metallic. \\ | ||
| + | Organic material will outwear an equal section of metallic material under normal operating conditions. \\ | ||
| + | |||
| + | An organic pad will also reduce heat transfer between the brake disc and brake fluid in the caliper. \\ | ||
| + | It is also less harsh on the disc and usually leaves the disc with a polished look. \\ | ||
| + | This material has two disadvantages: \\ | ||
| + | - The organic material will fade when high pad temperatures are developed. | ||
| + | - Wet stopping power is very poor when the material is thoroughly wet. | ||
| + | |||
| + | Metallic friction material increases it's efficiency as temperatures increase, and water has little effect on stopping performance. \\ | ||
| + | Metallic linings, in normal service, have a shorter wear life than organic. \\ | ||
| + | Semi-metallic have characteristics in between the organic and metallic. \\ | ||
| + | |||
| + | Replace pads when the thickness of the friction material has worn down to 1/16" or less on all models except those specified in the paragraph below. \\ | ||
| + | |||
| + | We suggest that you use only the recommended Harley-Davidson pads. \\ | ||
| + | 1974 thru 1977 XL, XLCH, XLT, FX, FXE, FXS models have a wear indicator slot in the front brake pad friction material. \\ | ||
| + | Replace pads when the friction material has worn down to 3/32" thickness as shown in the illustration. \\ | ||
| + | // | ||
| + | |||
| + | {{:techtalk:ih:wheels:1974-1977_brake_pads_drawing_by_hippysmack.png?direct&300|}} ((drawing by Hippysmack)) \\ | ||
| + | |||
| + | **Disc and pad sets**: | ||
| + | |Disc, Material|Pad| | ||
| + | |-73, mild steel|organic| | ||
| + | |-78, hard stainless|semi-iron, black| | ||
| + | |-79, very hard stainless|semi-iron, copper| | ||
| + | |-84, very hard stainless \\ 11/12" rotor|semi-iron, copper| | ||
| + | |-84A, 30 hole, anti symmetrical|semi-iron, copper| | ||
| + | |-94, softer stainless|semi-iron, gray| | ||
