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techtalk:ih:engmech07 [2022/04/03 22:19] hippysmack [Oil Deflector / Separator Bushing Assembly (1957-1962)] |
techtalk:ih:engmech07 [2022/04/08 21:09] hippysmack [1979-E1982 Breather Valve] |
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* Slot in pump gear: .625" | * Slot in pump gear: .625" | ||
* 90° of vacuum from 90° (ABDC) to front (TDC). | * 90° of vacuum from 90° (ABDC) to front (TDC). | ||
- | ===== Oil Deflector / Separator Bushing Assembly (1957-1962) ===== | + | ===== Oil Deflector / Separator Bushing Assembly (1952-1962) ===== |
AKA, (spring loaded top hat) \\ | AKA, (spring loaded top hat) \\ | ||
- | Oil deflector bushing consists of 2 pieces with the second being a brass oil seal insert "top hat". \\ | + | 1952-1962 K Models and Sportsters used a drive gear on the generator with an integral oil slinger (daisy wheel) on the end. \\ |
+ | Oil gets slung back into the gearcase and air is sent thru the oil deflector bushing and out the cover by way of the breather tube. \\ | ||
+ | See more on the generator gear at the bottom of this page. \\ | ||
+ | |||
+ | The oil deflector bushing consists of 2 pieces with the second being a brass oil seal insert "top hat". \\ | ||
A spring (25287-37) sits under the top hat in the bushing bore. \\ | A spring (25287-37) sits under the top hat in the bushing bore. \\ | ||
The assembly is pressed into the front of the cover with the brass being spring loaded against the generator "daisy cutter" gear. \\ | The assembly is pressed into the front of the cover with the brass being spring loaded against the generator "daisy cutter" gear. \\ | ||
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The spring should have free action and be fully extended in the gearcase cover. \\ | The spring should have free action and be fully extended in the gearcase cover. \\ | ||
- | {{:techtalk:ih:engmech:1952-1962_k_model-sportster_breather_oil_separator_bushing_assembly_25265-52_by_jrsvintageharley1990.jpg?direct&300|}} ((photo courtesy of Ebay seller, jrsvintageharley1990. [[https://www.ebay.com/str/jrsvintageharleyparts?_trksid=p2047675.l2563|Link to Ebay Store]] )) {{: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_pic5_by_62_ironhead.jpg?direct&300|}} ((photo by 62 Ironhead of the XLFORUM http://xlforum.net/forums/showthread.php?t=1861965)) \\ | + | {{:techtalk:ih:engmech:1952-1962_k_model-sportster_breather_oil_separator_bushing_assembly_25265-52_by_jrsvintageharley1990.jpg?direct&300|}} ((photo courtesy of Ebay seller, jrsvintageharley1990. [[https://www.ebay.com/str/jrsvintageharleyparts?_trksid=p2047675.l2563|Link to Ebay Store]] )) {{:techtalk:ih:engmech:1952-1962_k_model-sportster_oil_deflector_bushing_installed_by_panknuckpartsandtreasures.jpg?direct&300|}} ((photos courtesy of Ebay seller, panknuckpartsandtreasures. [[https://www.ebay.com/sch/panknuckpartsandtreasures/m.html?_nkw=&_armrs=1&_ipg=&_from=|Link to Ebay Store]] )) \\ |
+ | ===== Oil Separator Deflector (1963-1978) ===== | ||
+ | |||
+ | {{:techtalk:ih:engmech:1963-1978_sportster_cam_cover_oil_deflector_25265-63_by_jrsvintageharley1990.jpg?direct&300|}} ((photos courtesy of Ebay seller, jrsvintageharley1990. [[https://www.ebay.com/str/jrsvintageharleyparts?_trksid=p2047675.l2563|Link to Ebay Store]] )) \\ | ||
====== One Way Breather Valve (77-85) ====== | ====== One Way Breather Valve (77-85) ====== | ||
The one way breather style system is more like a car PCV system. ((mrmom9r of the XLFORUM http://xlforum.net/forums/showthread.php?t=1204854&page=4)) Unlike an auto PCV, a Sportster has a faster acting type one way valve. \\ | The one way breather style system is more like a car PCV system. ((mrmom9r of the XLFORUM http://xlforum.net/forums/showthread.php?t=1204854&page=4)) Unlike an auto PCV, a Sportster has a faster acting type one way valve. \\ | ||
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* The breather valve is a simple reed valve with a flap made of spring steel over a hole. \\ Unless it's visibly damaged, there's no reason to mess with it. ((BigMek of the XLFORUM http://xlforum.net/forums/showthread.php?p=5843330)) \\ If it stops up, you can try and spray some WD-40 in the hole to clear it. | * The breather valve is a simple reed valve with a flap made of spring steel over a hole. \\ Unless it's visibly damaged, there's no reason to mess with it. ((BigMek of the XLFORUM http://xlforum.net/forums/showthread.php?p=5843330)) \\ If it stops up, you can try and spray some WD-40 in the hole to clear it. | ||
* **Removal**: | * **Removal**: | ||
- | * The reed cam be removed with a standard bushing / bearing puller with a 5/8". | + | * The reed can be removed with a standard bushing / bearing puller with a 5/8". |
* **Replacement options / mods**: | * **Replacement options / mods**: | ||
* In L1982, a new style crankcase breather valve was used in production. \\ The breather valve kit (26909-79A), which is functionally more durable and quieter than the early style reed valve, will fit 1979-E82 models. \\ The late style breather valve incorporates a rubber umbrella valve attached to the base plate along with a larger diameter oil slinger washer. \\ The oil slinger washer is bigger (1-3/4" OD). \\ These parts, used together, will replace the early style reed valve assembly and smaller diameter oil separator washer. \\ | * In L1982, a new style crankcase breather valve was used in production. \\ The breather valve kit (26909-79A), which is functionally more durable and quieter than the early style reed valve, will fit 1979-E82 models. \\ The late style breather valve incorporates a rubber umbrella valve attached to the base plate along with a larger diameter oil slinger washer. \\ The oil slinger washer is bigger (1-3/4" OD). \\ These parts, used together, will replace the early style reed valve assembly and smaller diameter oil separator washer. \\ | ||
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* [[techtalk:ref:engmech05i#refengine_mechanicals_-_sub-05i|Click here]] to see the page on Adding a Secondary Vent Hose at the 6:00 Position. \\ This mod has been done with agreeable results to improve breathing. | * [[techtalk:ref:engmech05i#refengine_mechanicals_-_sub-05i|Click here]] to see the page on Adding a Secondary Vent Hose at the 6:00 Position. \\ This mod has been done with agreeable results to improve breathing. | ||
- | Here's the reed valve and the back side. \\ | + | Here's the reed valve as installed. \\ |
- | {{:techtalk:ih:engmech:79_breather_valve_by_tobybott.jpg?direct&350|}} ((photo by tobybott of the XLFORUM http://xlforum.net/forums/showthread.php?p=982127&highlight=breather#post982127)) {{:techtalk:ih:engmech:reed_valve_by_lodkolv.jpg?direct&300|}} ((photo by lodkolv of the XLFORUM http://xlforum.net/forums/showthread.php?t=113861&highlight=breather&page=2)) \\ | + | {{:techtalk:ih:engmech:79_breather_valve_by_tobybott.jpg?direct&350|}} ((photo by tobybott of the XLFORUM http://xlforum.net/forums/showthread.php?p=982127&highlight=breather#post982127)) \\ |
+ | |||
+ | Here is the reed valve assembly front and back side. \\ | ||
+ | {{:techtalk:ih:engmech:1979-e1982_sportster_reed_type_breather_valve_26909-79_by_bikersnos_pic2.jpg?direct&300|}} ((photo courtesy of BIKERSNOS.com. [[https://www.ebay.com/str/bikersnos?_trksid=p2047675.m3561.l2563|Link to Ebay Store]] )) | ||
+ | {{:techtalk:ih:engmech:1979-e1982_sportster_reed_type_breather_valve_26909-79_by_bikersnos_pic1.jpg?direct&300|}} ((photo courtesy of BIKERSNOS.com. [[https://www.ebay.com/str/bikersnos?_trksid=p2047675.m3561.l2563|Link to Ebay Store]] )) \\ | ||
+ | \\ | ||
+ | |||
+ | === L1982 Upgrade === | ||
(Left) - E82 cover with the breather removed showing compartment below. ((photo by wlkilmer of the XLFORUM)) \\ | (Left) - E82 cover with the breather removed showing compartment below. ((photo by wlkilmer of the XLFORUM)) \\ |