Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
|
techtalk:ref:wheels06 [2022/08/25 18:25] hippysmack |
techtalk:ref:wheels06 [2024/01/25 01:07] hippysmack |
||
|---|---|---|---|
| Line 2: | Line 2: | ||
| ====== REF: Wheels, Brakes & Tires ====== | ====== REF: Wheels, Brakes & Tires ====== | ||
| ====== Bleeding the Brake Lines ====== | ====== Bleeding the Brake Lines ====== | ||
| + | This page consists of many different means and methods to bleed the brake system and perspective advice. \\ | ||
| + | All will work some of the time and none will work some of the time. And what works for one person doesn't work for the next either. \\ | ||
| + | |||
| + | The right way is the way that works for you! \\ | ||
| - | ====== Bleeding The Brake System By The Book ====== | ||
| - | This page consists of many different ways to bleed the brake system and perspective advice. \\ | ||
| One way seems to work for some but not for others and having several options gives a person versatility. \\ | One way seems to work for some but not for others and having several options gives a person versatility. \\ | ||
| However, your main tool when bleeding brakes is patience. \\ | However, your main tool when bleeding brakes is patience. \\ | ||
| \\ | \\ | ||
| + | ====== Bleeding The Brake System By The Book ====== | ||
| **Note on potential brake fluid leaks**: \\ | **Note on potential brake fluid leaks**: \\ | ||
| 2000 model brake bleeder screws can retain fluid on the threads and in the bleeder bore which can seep out giving the impression there is a brake fluid leak. ((HD Tech Tip #51 dated December 1999)) \\ | 2000 model brake bleeder screws can retain fluid on the threads and in the bleeder bore which can seep out giving the impression there is a brake fluid leak. ((HD Tech Tip #51 dated December 1999)) \\ | ||
| Line 19: | Line 22: | ||
| Residual fluid will be removed during normal washings. If brake fluid re-appears, diagnose the cause. \\ | Residual fluid will be removed during normal washings. If brake fluid re-appears, diagnose the cause. \\ | ||
| If fluid re-appears at the caliper seam or mounting bolts, it may indicate the crossover seals are leaking. \\ Disassemble and repair the caliper using the procedures in the appropriate FSM. \\ | If fluid re-appears at the caliper seam or mounting bolts, it may indicate the crossover seals are leaking. \\ Disassemble and repair the caliper using the procedures in the appropriate FSM. \\ | ||
| - | ==== Notes: ==== | ||
| + | ==== Notes: ==== | ||
| * When checking the relief port operation: | * When checking the relief port operation: | ||
| * The 2000 FSM says to check the relief port after bleeding the system. ((2000 HD XLH FSM pg 2-57)) | * The 2000 FSM says to check the relief port after bleeding the system. ((2000 HD XLH FSM pg 2-57)) | ||
| Line 28: | Line 31: | ||
| ==== When You Should Bleed The System ==== | ==== When You Should Bleed The System ==== | ||
| - | |||
| - Bleed the hydraulic brake system anytime a brake line, M/C or caliper has been opened. | - Bleed the hydraulic brake system anytime a brake line, M/C or caliper has been opened. | ||
| - Whenever the brake pedal or lever operation feels spongy. | - Whenever the brake pedal or lever operation feels spongy. | ||
| + | |||
| ==== Before Bleeding ==== | ==== Before Bleeding ==== | ||
| - | |||
| Arrange for the master cylinder to be in a level position by standing the bike upright (off the kickstand). | Arrange for the master cylinder to be in a level position by standing the bike upright (off the kickstand). | ||
| ==== Manually Bleeding ==== | ==== Manually Bleeding ==== | ||
| - | |||
| - Install the end of a length of plastic tubing over the caliper bleeder valve. Place the free end of the tube in a clean container. | - Install the end of a length of plastic tubing over the caliper bleeder valve. Place the free end of the tube in a clean container. | ||
| - Add new brake fluid to M/C until the fluid level is 1/8” (3.2mm) from the top. | - Add new brake fluid to M/C until the fluid level is 1/8” (3.2mm) from the top. | ||
| Line 54: | Line 55: | ||
| ==== Bleeding ABS Brake System ==== | ==== Bleeding ABS Brake System ==== | ||
| - | The trick with ABS is when bleeding the fluid, a scan tool is needed to activate the ABS pumps to bleed properly. ((decman of the XLFORUM http://xlforum.net/forums/showthread.php?t=2003960)) \\ | + | The trick with ABS is when bleeding the fluid, a scan tool is needed to activate the ABS pumps to bleed properly. ((decman of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-drivetrain/sportster-motorcycle-tires-wheels-and-brakes-aa/187728-changing-brake-pads-on-abs-bikes?t=2003960)) \\ |
| Daytona Twin Tec Twin Scan II and III can be used for that. \\ | Daytona Twin Tec Twin Scan II and III can be used for that. \\ | ||
| When changing the pads, only compress the pistons enough for the new pads. \\ | When changing the pads, only compress the pistons enough for the new pads. \\ | ||
| Remove some fluid before doing that. \\ | Remove some fluid before doing that. \\ | ||
| Also careful with the ABS wheel sensors / wires when removing the calipers. \\ | Also careful with the ABS wheel sensors / wires when removing the calipers. \\ | ||
| + | |||
| ====== Bleeding Methods from XLFORUM Members ====== | ====== Bleeding Methods from XLFORUM Members ====== | ||
| See also [[techtalk:ref:wheels06a|An Exercise in Bleeding the Brake System]] \\ | See also [[techtalk:ref:wheels06a|An Exercise in Bleeding the Brake System]] \\ | ||
| - | |||
| - | There are many methods of bleeding brakes from XLFORUM members as outlined below. \\ | ||
| - | All will work some of the time and none will work some of the time. \\ | ||
| - | What works for one person doesn't work for the next either. \\ | ||
| - | |||
| - | The right way is the way that works for you! | ||
| - | |||
| ====== Reverse Bleeding Thru the Calipers ====== | ====== Reverse Bleeding Thru the Calipers ====== | ||
| ===== Using a Syringe ===== | ===== Using a Syringe ===== | ||
| - | |||
| The key to this method is a slow push from the caliper to the master cylinder. \\ | The key to this method is a slow push from the caliper to the master cylinder. \\ | ||
| Too fast and you spit brake fluid all over the bike and the floor due to exerting higher pressure into the line. \\ | Too fast and you spit brake fluid all over the bike and the floor due to exerting higher pressure into the line. \\ | ||
| - | It may be hard to push the syringe plunger especially if pushing hard. ((Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?p=5965411#post5965411)) \\ | + | It may be hard to push the syringe plunger especially if pushing hard. ((Hippysmack of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-drivetrain/sportster-motorcycle-tires-wheels-and-brakes-aa/204454-reverse-bleed-question#post4596184)) \\ |
| The hole in the MC is smaller than the hose and you'll be pushing fluid uphill from the bleeder screw thru the small orifice in the master cylinder. \\ | The hole in the MC is smaller than the hose and you'll be pushing fluid uphill from the bleeder screw thru the small orifice in the master cylinder. \\ | ||
| This creates back pressure on the line down to the syringe from that hole. \\ | This creates back pressure on the line down to the syringe from that hole. \\ | ||
| Line 81: | Line 75: | ||
| Likewise, the slower you push, the easier it should be to move the fluid (not to say it will be easy though, depending on hand strength). \\ | Likewise, the slower you push, the easier it should be to move the fluid (not to say it will be easy though, depending on hand strength). \\ | ||
| - | The handle end of the master cylinder must be higher than the hose end so the air bubbles will move to the relief port of the master cylinder. ((ryder rick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1025390&highlight=Brake+Fluid+Bleeding+w%2FSyringe)) \\ | + | The handle end of the master cylinder must be higher than the hose end so the air bubbles will move to the relief port of the master cylinder. ((ryder rick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/109840-bleeding-front-brake?t=1025390&highlight=Brake+Fluid+Bleeding+w/Syringe)) \\ |
| - | You can also use a squirt type oil can with some rubber tubing on the spout slipped over the cracked-open bleeder. ((chopfather of the XLFORUM http://xlforum.net/forums/showthread.php?t=33235&page=3)) \\ | + | You can also use a squirt type oil can with some rubber tubing on the spout slipped over the cracked-open bleeder. ((chopfather of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-photos-videos/20061-bleeding-brakes/page3?t=33235&page=3)) \\ |
| Or, you can use a turkey basting syringe and a foot of rubber hose. | Or, you can use a turkey basting syringe and a foot of rubber hose. | ||
| - | - Discard the needle from the syringe, remove lid from master cylinder and re-set it on top. \\ It must be off of course, but the master cylinder must be covered to prevent the fluid from squirting 10' across the shop. ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1489822&highlight=Brake+Fluid+Bleeding+w%2FSyringe)) | + | - Discard the needle from the syringe, remove lid from master cylinder and re-set it on top. \\ It must be off of course, but the master cylinder must be covered to prevent the fluid from squirting 10' across the shop. ((IronMick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/137228-the-right-way-to-flush-brake-lines?t=1489822&highlight=Brake+Fluid+Bleeding+w/Syringe)) |
| - | - Attach a short clear plastic tube to the end of the syringe. \\ Best to use a tube that is "too small" in diameter. \\ This is important to get a really tight seal on the bleeder to the point you have to force it onto the bleeder with needle nose pliers. ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1489822&highlight=Brake+Fluid+Bleeding+w%2FSyringe)) | + | - Attach a short clear plastic tube to the end of the syringe. \\ Best to use a tube that is "too small" in diameter. \\ This is important to get a really tight seal on the bleeder to the point you have to force it onto the bleeder with needle nose pliers. ((IronMick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/137228-the-right-way-to-flush-brake-lines?t=1489822&highlight=Brake+Fluid+Bleeding+w/Syringe)) |
| - | - Use the syringe to empty the master cylinder and discard this fluid. ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1489822&highlight=Brake+Fluid+Bleeding+w%2FSyringe)) | + | - Use the syringe to empty the master cylinder and discard this fluid. ((IronMick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/137228-the-right-way-to-flush-brake-lines?t=1489822&highlight=Brake+Fluid+Bleeding+w/Syringe)) |
| - | - Fill the syringe with new brake fluid and let stand for 5 minutes or so for the bubbles to rise out of the syringe / tube. ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1489822&highlight=Brake+Fluid+Bleeding+w%2FSyringe)) | + | - Fill the syringe with new brake fluid and let stand for 5 minutes or so for the bubbles to rise out of the syringe / tube. ((IronMick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/137228-the-right-way-to-flush-brake-lines?t=1489822&highlight=Brake+Fluid+Bleeding+w/Syringe)) |
| - | - Attach to bleeder, hold it upright and fiddle with the tube until air has risen into syringe. ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1489822&highlight=Brake+Fluid+Bleeding+w%2FSyringe)) | + | - Attach to bleeder, hold it upright and fiddle with the tube until air has risen into syringe. ((IronMick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/137228-the-right-way-to-flush-brake-lines?t=1489822&highlight=Brake+Fluid+Bleeding+w/Syringe)) |
| - | - Loosen the bleeder and slowly squeeze the fluid through. \\ Do not release pressure on the syringe without tightening the bleeder. \\ Or some fluid and possibly some air may get drawn back. ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1489822&highlight=Brake+Fluid+Bleeding+w%2FSyringe)) | + | - Loosen the bleeder and slowly squeeze the fluid through. \\ Do not release pressure on the syringe without tightening the bleeder. \\ Or some fluid and possibly some air may get drawn back. ((IronMick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/137228-the-right-way-to-flush-brake-lines?t=1489822&highlight=Brake+Fluid+Bleeding+w/Syringe)) |
| Using 30ML syringes (or anything smaller than 60ML), \\ | Using 30ML syringes (or anything smaller than 60ML), \\ | ||
| - | You'll have to push fluid at least two separate times to get new fluid / air from the bottom to the M/C. ((TheForce of the XLFORUM http://xlforum.net/forums/archive/index.php/t-50864.html)) \\ | + | You'll have to push fluid at least two separate times to get new fluid / air from the bottom to the M/C. ((TheForce of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/30549-question-on-bleeding-brakes-w-syringe)) \\ |
| - Draw in a 30 ML's of brake fluid into the syringe and cover the master cylinder with a rag. | - Draw in a 30 ML's of brake fluid into the syringe and cover the master cylinder with a rag. | ||
| Line 101: | Line 95: | ||
| - Lightly pump the M/C a few times and hold. | - Lightly pump the M/C a few times and hold. | ||
| - Open the bleed valve and repeat until you feel a good strong push. | - Open the bleed valve and repeat until you feel a good strong push. | ||
| - | ===== Using a Vacuum Pump ===== | ||
| - | * You can use a vacuum pump to reverse bleed fluid from a jar, up the brake line and into caliper. ((Matt of the XLFORUM http://xlforum.net/forums/showthread.php?t=47150)) | + | ===== Using a Vacuum Pump ===== |
| + | * You can use a vacuum pump to reverse bleed fluid from a jar, up the brake line and into caliper. ((Matt of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-drivetrain/sportster-motorcycle-tires-wheels-and-brakes-aa/28453-is-the-mighty-vac-worth-the-40-bucks-for-brake-bleeding?t=47150)) | ||
| ====== Force Bleeding Thru the Bleeder Screw ====== | ====== Force Bleeding Thru the Bleeder Screw ====== | ||
