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techtalk:evo:engmech09 [2019/11/30 16:38] hippysmack [Replacement] |
techtalk:evo:engmech09 [2020/01/26 01:39] ixl2relax ↷ Page name changed from techtalk:evo:susp05 to techtalk:evo:engmech09 |
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| [[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | [[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | ||
| - | ====== EVO: Suspension ====== | + | ====== EVO: Engine Mechanical ====== |
| \\ | \\ | ||
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| The isolators are not holding the screws in. They are just against them (shouldn't be much pressure if any against the screws). \\ | The isolators are not holding the screws in. They are just against them (shouldn't be much pressure if any against the screws). \\ | ||
| Most likely, only with severe deflection of that pivot pin would pressure be placed on the plate and shear the bolts. \\ | Most likely, only with severe deflection of that pivot pin would pressure be placed on the plate and shear the bolts. \\ | ||
| + | You can drill the center of the screw with a small drill bit and try and Easy-Out to remove it. \\ | ||
| | Loose / broken lock plate screws. ((photo by Nytstr of the XLFORUM http://xlforum.net/forums/showthread.php?t=1313091)) | The screws are hidden from the outside. ((photos by Cosmo Kramer of the XLFORUM http://xlforum.net/forums/showthread.php?t=1313091&page=2)) || | | Loose / broken lock plate screws. ((photo by Nytstr of the XLFORUM http://xlforum.net/forums/showthread.php?t=1313091)) | The screws are hidden from the outside. ((photos by Cosmo Kramer of the XLFORUM http://xlforum.net/forums/showthread.php?t=1313091&page=2)) || | ||
| |{{:techtalk:evo:susp:rear_engine_mount_by_nytstr.jpg?direct&300|}}| {{:techtalk:evo:susp:07_rear_motor_mount_2_by_cosmo_kramer.jpg?direct&300|}}|{{:techtalk:evo:susp:07_rear_motor_mount_3_by_cosmo_kramer.jpg?direct&300|}}| | |{{:techtalk:evo:susp:rear_engine_mount_by_nytstr.jpg?direct&300|}}| {{:techtalk:evo:susp:07_rear_motor_mount_2_by_cosmo_kramer.jpg?direct&300|}}|{{:techtalk:evo:susp:07_rear_motor_mount_3_by_cosmo_kramer.jpg?direct&300|}}| | ||
| + | |||
| + | | Screw removal with Easy-Out. ((photos by LuxBlue of the XLFORUM)) ||| | ||
| + | |{{:techtalk:evo:susp:broken_screw_removal_1_by_luxblue.jpg?direct&300|}}|{{:techtalk:evo:susp:broken_screw_removal_2_by_luxblue.jpg?direct&300|}}|{{:techtalk:evo:susp:broken_screw_removal_3_by_luxblue.jpg?direct&300|}}| | ||
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| ==== Worn / Rusty Pivot Shaft ==== | ==== Worn / Rusty Pivot Shaft ==== | ||
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| The pivot shaft has metal-to-metal contact on the shoulder where it pushes against the motor mount and all along the hole going thru the motor mount itself. The groove in the pivot shaft to the right is from contact with the backing plate on the throttle side isolator. ((photo by Cosmo Kramer of the XLFORUM http://xlforum.net/forums/showthread.php?t=473423)) The groove was most likely worn in by movement in the vertical axis (as the groove was on the bottom side of the shaft), and has nothing to do with lateral play of the swing arm. ((XLXF of the XLFORUM http://xlforum.net/forums/showthread.php?t=473423&page=3)) Since the hole in the backing plate is larger than the pivot shaft, the backing plate is not supposed to touch the pivot shaft. However, this may be one of the things that happens over time as the rubber gets weak and moves around a bit more. It is an extremely tight fit going through the motor mount itself (machined shaft and mating hole). On the shaft below, there was no wear where the pivot shaft goes through the rear motor mount. The only wear was where the isolators contact the shaft with the heaviest wear on the throttle side. The witness mark was nearly all the way around the pivot shaft. On the clutch side, there is a very faint mark from where the rubbermount backing plate would be hitting the bottom of the pivot shaft (closest to the ground where the weight would be resting on). Dirt bike suspension bolts can be much worse. Enough wear will cause excessive play in the swing arm, and then the rear wheel will not track straight because drive belt tension will twist the swingarm so the tire points to the left. \\ | The pivot shaft has metal-to-metal contact on the shoulder where it pushes against the motor mount and all along the hole going thru the motor mount itself. The groove in the pivot shaft to the right is from contact with the backing plate on the throttle side isolator. ((photo by Cosmo Kramer of the XLFORUM http://xlforum.net/forums/showthread.php?t=473423)) The groove was most likely worn in by movement in the vertical axis (as the groove was on the bottom side of the shaft), and has nothing to do with lateral play of the swing arm. ((XLXF of the XLFORUM http://xlforum.net/forums/showthread.php?t=473423&page=3)) Since the hole in the backing plate is larger than the pivot shaft, the backing plate is not supposed to touch the pivot shaft. However, this may be one of the things that happens over time as the rubber gets weak and moves around a bit more. It is an extremely tight fit going through the motor mount itself (machined shaft and mating hole). On the shaft below, there was no wear where the pivot shaft goes through the rear motor mount. The only wear was where the isolators contact the shaft with the heaviest wear on the throttle side. The witness mark was nearly all the way around the pivot shaft. On the clutch side, there is a very faint mark from where the rubbermount backing plate would be hitting the bottom of the pivot shaft (closest to the ground where the weight would be resting on). Dirt bike suspension bolts can be much worse. Enough wear will cause excessive play in the swing arm, and then the rear wheel will not track straight because drive belt tension will twist the swingarm so the tire points to the left. \\ | ||
| \\ \\ \\ | \\ \\ \\ | ||
| - | {{:techtalk:evo:susp:rusty_rear_pivot_bolt_by_cosmo_kramer.jpg?direct&300 |}} {{:techtalk:evo:susp:07_rear_motor_mount_22_by_cosmo_kramer.jpg?direct&300 |}} Water can get between the isolators and the pivot shaft and cause it to rust. ((photo by Cosmo Kramer of the XLFORUM http://xlforum.net/forums/showthread.php?t=473423)) The rust will only get worse as time goes by (especially if you live near the ocean). ((XLXR of the XLFORUM http://xlforum.net/forums/showthread.php?t=473423)) Rust can cause long term problems because it will eventually cause too much swingarm play. Guys who live in places like Florida will have rust problems sooner than the rest of us. You can sand blast all the rust off, use sand paper or a wire brush to remove the rust. Then coat the shaft with a good marine water proof grease. Paint will only rust through again. \\ \\ \\ \\ \\ \\ | + | {{:techtalk:evo:susp:rusty_rear_pivot_bolt_by_cosmo_kramer.jpg?direct&300 |}} {{:techtalk:evo:susp:07_rear_motor_mount_22_by_cosmo_kramer.jpg?direct&300 |}} Water can get between the isolators and the pivot shaft and cause it to rust. ((photos by Cosmo Kramer of the XLFORUM http://xlforum.net/forums/showthread.php?t=473423)) The rust will only get worse as time goes by (especially if you live near the ocean). ((XLXR of the XLFORUM http://xlforum.net/forums/showthread.php?t=473423)) Rust can cause long term problems because it will eventually cause too much swingarm play. Guys who live in places like Florida will have rust problems sooner than the rest of us. You can sand blast all the rust off, use sand paper or a wire brush to remove the rust. Then coat the shaft with a good marine water proof grease. Paint will only rust through again. \\ \\ \\ \\ \\ \\ |
| ===== Replacement ===== | ===== Replacement ===== | ||
| Line 199: | Line 205: | ||
| |{{:techtalk:evo:susp:07_rear_motor_mount_7_by_cosmo_kramer.jpg?direct&300|}}|{{:techtalk:evo:susp:07_rear_motor_mount_8_by_cosmo_kramer.jpg?direct&300|}}|{{:techtalk:evo:susp:07_rear_motor_mount_9_by_cosmo_kramer.jpg?direct&300|}}| | |{{:techtalk:evo:susp:07_rear_motor_mount_7_by_cosmo_kramer.jpg?direct&300|}}|{{:techtalk:evo:susp:07_rear_motor_mount_8_by_cosmo_kramer.jpg?direct&300|}}|{{:techtalk:evo:susp:07_rear_motor_mount_9_by_cosmo_kramer.jpg?direct&300|}}| | ||
| - | | Rear isolator locating tabs in place. ((photos by 04xl1200c of the XLFORUM http://xlforum.net/forums/showthread.php?t=1701136&page=11)) || | + | | Rear isolator locating tabs. ((photos by 04xl1200c of the XLFORUM http://xlforum.net/forums/showthread.php?t=1701136&page=11)) || |
| |{{:techtalk:evo:susp:rear_isolator_tabs_in_place_1_by_04xl1200c.jpg?direct&300|}}|{{:techtalk:evo:susp:rear_isolator_tabs_in_place_2_by_04xl1200c.jpg?direct&300|}}| | |{{:techtalk:evo:susp:rear_isolator_tabs_in_place_1_by_04xl1200c.jpg?direct&300|}}|{{:techtalk:evo:susp:rear_isolator_tabs_in_place_2_by_04xl1200c.jpg?direct&300|}}| | ||
| ==== Pivot Shaft Pics ==== | ==== Pivot Shaft Pics ==== | ||
| Line 218: | Line 224: | ||
| On the shoulder of the shaft there are two "flat" spots 180° from each other. The retainer plate has two small tabs that fit into the flat spots. \\ | On the shoulder of the shaft there are two "flat" spots 180° from each other. The retainer plate has two small tabs that fit into the flat spots. \\ | ||
| The shaft can still rotate a small amount until the shoulder on the shaft comes into contact with the tab. \\ | The shaft can still rotate a small amount until the shoulder on the shaft comes into contact with the tab. \\ | ||
| - | The backing plate has two tabs that engage those flat spots on the pivot shaft. \\ | + | The backing plate has two tabs that engage those flat spots on the pivot shaft and that connection locks the shaft from rotating once installed. \\ |
| {{:techtalk:evo:susp:07_rear_motor_mount_16_by_cosmo_kramer.jpg?direct&300|}} ((photo by Cosmo Kramer of the XLFORUM http://xlforum.net/forums/showthread.php?t=473423)) {{:techtalk:evo:susp:07_rear_motor_mount_17_by_cosmo_kramer.jpg?direct&300|}} ((photo by Cosmo Kramer of the XLFORUM http://xlforum.net/forums/showthread.php?t=473423)) {{:techtalk:evo:susp:07_rear_motor_mount_18_by_cosmo_kramer.jpg?direct&200|}} ((photo by Cosmo Kramer of the XLFORUM http://xlforum.net/forums/showthread.php?t=473423)) \\ | {{:techtalk:evo:susp:07_rear_motor_mount_16_by_cosmo_kramer.jpg?direct&300|}} ((photo by Cosmo Kramer of the XLFORUM http://xlforum.net/forums/showthread.php?t=473423)) {{:techtalk:evo:susp:07_rear_motor_mount_17_by_cosmo_kramer.jpg?direct&300|}} ((photo by Cosmo Kramer of the XLFORUM http://xlforum.net/forums/showthread.php?t=473423)) {{:techtalk:evo:susp:07_rear_motor_mount_18_by_cosmo_kramer.jpg?direct&200|}} ((photo by Cosmo Kramer of the XLFORUM http://xlforum.net/forums/showthread.php?t=473423)) \\ | ||
