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techtalk:ih:engmech01 [2018/09/08 02:04] hippysmack |
techtalk:ih:engmech01 [2020/09/17 03:33] hippysmack [Gearcase / Cam Cover] |
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| ===== Sub-Documents ===== | ===== Sub-Documents ===== | ||
| * [[techtalk:ih:engmech01a|Sprocket Cover Dowel Hole (Case) Repair]] | * [[techtalk:ih:engmech01a|Sprocket Cover Dowel Hole (Case) Repair]] | ||
| - | * [[techtalk:ih:engmech01b|Drain Plugs Explained]] | + | * [[techtalk:ref:oil01#sportster_drain_plugs_explained|Sportster Drain Plugs Explained]] |
| - | * [[techtalk:ref:engmech01e|Installing a Helicoil on a Drain Plug with the Engine in the Frame]] | + | * [[techtalk:ref:engmech01e|Tapping or Installing a Helicoil on a Drain Plug with the Engine in the Frame]] |
| + | ===== Gearcase / Cam Cover ===== | ||
| + | |||
| + | | Cam Cover (casting 25202-52A) ((photo by ironheadjunkie of the XLFORUM http://xlforum.net/forums/showthread.php?t=1421916&page=2)) | | ||
| + | |{{:techtalk:ih:engmech:cam_cover_1_25202-52a_by_ironheadjunkie.jpg?direct&300|}}| | ||
| + | |||
| + | ===== Cam Cover Bushings ===== | ||
| + | |||
| + | **Breather bushing**: \\ | ||
| + | |||
| + | Looking at the brass part, you can see how the spring catches on the inward bent tabs. There are also unbent tabs on the brass. ((Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1861965)) \\ | ||
| + | These, when bent outward just a little, fit into slots on the far side of the steel bushing pressed into cam cover. \\ | ||
| + | Here's how the factory assembled this thing. \\ | ||
| + | They had pre-assembled the brass to the steel before the steel was pressed into the cover. \\ | ||
| + | Then dropped the spring into the cover and pressed the brass/steel assembly into the cover as a unit (and manipulated the spring to sit correctly if needed). \\ | ||
| + | However, it is possible to assemble the unit without removing the steel from the cover. | ||
| + | Notes: \\ | ||
| + | The tabs must be bent outward enough that the brass stays keyed to the steel at full spring compression. \\ | ||
| + | You don't want the brass hat to 'unkey' when the generator compresses spring. | ||
| + | The brass needs to be able to 'plunge' in and out under the spring pressure once the tags are bent. \\ | ||
| + | If you get too aggressive, you can cause deformations in the brass that allow it to hang up in it's sliding fit to the steel. \\ | ||
| + | These outward bent tangs do 2 things. \\ | ||
| + | * They keep the brass hat and spring captive in the cover upon generator removal. | ||
| + | * More importantly, they key the brass to the steel to prevent the brass from rotating with the generator gear. \\ The brass is unable to rotate by the tangs keying into the slots. | ||
| + | |||
| + | {{:techtalk:ih:engmech:breather_bushing_pic1_by_62_ironhead.jpg?direct&300|}} ((photo by 62 Ironhead of the XLFORUM http://xlforum.net/forums/showthread.php?t=1861965)) {{:techtalk:ih:engmech:breather_bushing_pic2_by_62_ironhead.jpg?direct&300|}} ((photo by 62 Ironhead of the XLFORUM http://xlforum.net/forums/showthread.php?t=1861965)) \\ | ||
| + | |||
| + | {{:techtalk:ih:engmech:breather_bushing_pic3_by_62_ironhead.jpg?direct&300|}} ((photo by 62 Ironhead of the XLFORUM http://xlforum.net/forums/showthread.php?t=1861965)) {{:techtalk:ih:engmech:breather_bushing_pic4_by_62_ironhead.jpg?direct&300|}} ((photo by 62 Ironhead of the XLFORUM http://xlforum.net/forums/showthread.php?t=1861965)) {{:techtalk:ih:engmech:breather_bushing_pic5_by_62_ironhead.jpg?direct&300|}} ((photo by 62 Ironhead of the XLFORUM http://xlforum.net/forums/showthread.php?t=1861965)) \\ | ||
| ====== Flywheel ====== | ====== Flywheel ====== | ||
| ===== Sub-Documents ===== | ===== Sub-Documents ===== | ||
| Line 15: | Line 42: | ||
| - | * In May of 1981, the MoCo issued a bulletin stating that product and quality improvements have brought about a commonized flywheel taper design. All tapers have were communized at 6° and all keyways were standardized. In June of 1981, an update to this bulletin was issued to include part numbers. ((HD Service Bulletin #M-829 dated May 19, 1981)) ((HD Service Bulletin #M-829A dated June 12, 1981)) | + | * In May of 1981, the MoCo issued a bulletin stating that product and quality improvements have brought about a commonized flywheel taper design. \\ |
| + | All tapers were communized at 6° and all keyways were standardized. \\ | ||
| + | In June of 1981, an update to this bulletin was issued to include part numbers. ((HD Service Bulletin #M-829 dated May 19, 1981)) ((HD Service Bulletin #M-829A dated June 12, 1981)) | ||
| * A limited number of E1982 XL engines (782216009-782237017) were assembled without the communized flywheel taper design. ((HD Service Bulletin #M-840 dated October 2, 1981)) | * A limited number of E1982 XL engines (782216009-782237017) were assembled without the communized flywheel taper design. ((HD Service Bulletin #M-840 dated October 2, 1981)) | ||
| * Notable component changes are included in the chart below. | * Notable component changes are included in the chart below. | ||
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| * If you've split the cases and the screen is in good shape, you don't have to take it out. Hit it with some compressed air and see if it needs replacing. ((BuckIRyder of the XLFORUM http://xlforum.net/forums/showthread.php?t=357456&highlight=xlch+strainer)) | * If you've split the cases and the screen is in good shape, you don't have to take it out. Hit it with some compressed air and see if it needs replacing. ((BuckIRyder of the XLFORUM http://xlforum.net/forums/showthread.php?t=357456&highlight=xlch+strainer)) | ||
| - | {{:techtalk:ih:engmech:crankcase_oil_strainer_by_happy_bob.jpg?direct&400|}} ((photo by Happy Bob of the XLFORUM http://xlforum.net/forums/showthread.php?t=357456&highlight=xlch+strainer)) \\ The strainer is held in place by this pin. It is staked into place with the two horizontal lines radiating from the it. To remove strainer, you must first remove the pin. Tear the screen from the strainer and place pliers on the pin inside (the now destroyed strainer) and wiggle the pin out. Strainers and strainer gaskets are available for replacement. ((Hillclimb68xlch of the XLFORUM http://xlforum.net/forums/showthread.php?t=357456&highlight=xlch+strainer)) | + | {{:techtalk:ih:engmech:crankcase_oil_strainer_by_happy_bob.jpg?direct&400|}} ((photo by Happy Bob of the XLFORUM http://xlforum.net/forums/showthread.php?t=357456&highlight=xlch+strainer)) {{:techtalk:ih:engmech:oil_screen_on_75_model_by_betasom.jpg?direct&400|}} ((photo by betasom of the XLFORUM http://xlforum.net/forums/showthread.php?t=1856189)) \\ The strainer is held in place by this pin. It is staked into place with the two horizontal lines radiating from the it. To remove strainer, you must first remove the pin. Tear the screen from the strainer and place pliers on the pin inside (the now destroyed strainer) and wiggle the pin out. Strainers and strainer gaskets are available for replacement. ((Hillclimb68xlch of the XLFORUM http://xlforum.net/forums/showthread.php?t=357456&highlight=xlch+strainer)) |
