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techtalk:ih:engmech09i [2021/06/10 19:36] hippysmack |
techtalk:ih:engmech09i [2023/12/27 22:35] (current) hippysmack |
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| ===== Specifics Behind the Assembly ===== | ===== Specifics Behind the Assembly ===== | ||
| + | From Dr Dick of the XLFORUM ((As arranged by IronMick, https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/109872-71-motor-mounts/page2?t=1025434&page=2)) \\ | ||
| - | * The key to what the factory did is the 4 holes in the plates (2 for plate to case & 2 for plate to frame) ((Dr Dick of the XLFORUM (as arranged by IronMick) http://xlforum.net/forums/showthread.php?t=1025434&page=2)) \\ | + | * The key to what the factory did is the 4 holes in the plates (2 for plate to case & 2 for plate to frame) \\ |
| * Let's look at case holes in the plates 1st. \\ The top hole (this is the one that has the nut welded on the right side plate) is round and fits closely to bolt diameter. \\ When this bolt gets put together, the plates are located to the case cause the plate hole isn't sloppy on the bolt. \\ This is the "master" bolt. (although the plate can rotate using the bolt as an axle until you put in the lower case bolt). | * Let's look at case holes in the plates 1st. \\ The top hole (this is the one that has the nut welded on the right side plate) is round and fits closely to bolt diameter. \\ When this bolt gets put together, the plates are located to the case cause the plate hole isn't sloppy on the bolt. \\ This is the "master" bolt. (although the plate can rotate using the bolt as an axle until you put in the lower case bolt). | ||
| * Now look at the plate hole for the lower case bolt. \\ Its slotted in a way that the plate can rotate about the upper case bolt even when the lower bolt get put in. \\ This rotary play allows the plates to rotate so the upper frame plate bolt holes in them can line up to the upper holes in frame. | * Now look at the plate hole for the lower case bolt. \\ Its slotted in a way that the plate can rotate about the upper case bolt even when the lower bolt get put in. \\ This rotary play allows the plates to rotate so the upper frame plate bolt holes in them can line up to the upper holes in frame. | ||
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| The washers have concentric ridges on one side only (affectionately known as biter washers). \\ | The washers have concentric ridges on one side only (affectionately known as biter washers). \\ | ||
| - | The hardened washers described below are the biter washers. ((piniongear of the XLFORUM http://xlforum.net/forums/showthread.php?t=727192&page=2)) \\ | + | The hardened washers (16218-52) described below are the biter washers. ((piniongear of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/90065-front-motormount-bolts/page2?t=727192&page=2)) \\ |
| The gripper side of each washer goes toward it's corresponding plate. \\ | The gripper side of each washer goes toward it's corresponding plate. \\ | ||
| - | On 57-76 models, all the lower front mount bolts install from the left side. ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1023762)) \\ | + | On 57-76 models, all the lower front mount bolts install from the left side. ((IronMick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/109737-motor-mount-spacer?t=1023762)) \\ |
| On 77-85 models with the gerotor oil pump, the bolts install from the left side with the exception of the bottom rear bolt that installs into the right side. \\ | On 77-85 models with the gerotor oil pump, the bolts install from the left side with the exception of the bottom rear bolt that installs into the right side. \\ | ||
| (The bolt head and washer takes up less space than the bolt end, washer and nut. So that leaves more clearance for the green wire/nut from the oil switch.) \\ | (The bolt head and washer takes up less space than the bolt end, washer and nut. So that leaves more clearance for the green wire/nut from the oil switch.) \\ | ||
| - | * There are five of the hardened washers required for the front motor mounts 76< motors and six for 77-up motors. | + | * There are 5 of the hardened washers required for the front motor mounts 76< motors, 6 for 77-81 motors and 7 for 82-E84 motors. |
| * There are two motor mount plates. | * There are two motor mount plates. | ||
| * There are 4 motor mount bolts. Two we will call front upper and lower. The other two we will refer to as rear upper and lower bolts. | * There are 4 motor mount bolts. Two we will call front upper and lower. The other two we will refer to as rear upper and lower bolts. | ||
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| * This bolt will thread into the welded on nut sitting on the left side engine plate. | * This bolt will thread into the welded on nut sitting on the left side engine plate. | ||
| - | {{techtalk:ih:engmech:16218-52_biter-washers.jpg?direct&200|}} | + | {{:techtalk:ih:engmech:1952-e1984_k_model_and_sportster_biter_washer_16281-52_by_bikersnos.jpg?direct&300|}} ((photo courtesy of BIKERSNOS.com. [[https://www.ebay.com/str/bikersnos?_trksid=p2047675.m3561.l2563|Link to Ebay Store]] )) \\ |
