Differences
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techtalk:evo:oil03i [2018/12/24 01:25] hippysmack [86-90 Oil Pump (26204-86) Individual Parts and Pics] |
techtalk:evo:oil03i [2024/01/05 03:43] (current) hippysmack |
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===== Oil Pump Cover ===== | ===== Oil Pump Cover ===== | ||
- | |||
* The bottom cover is HD catalog number (26486-86). | * The bottom cover is HD catalog number (26486-86). | ||
* The casting number (26487-86) is in the feed cavity. | * The casting number (26487-86) is in the feed cavity. | ||
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The installed lower pin also holds the outer plate in the pump body. \\ | The installed lower pin also holds the outer plate in the pump body. \\ | ||
The length of this pin could be a potential issue under the right conditions. \\ | The length of this pin could be a potential issue under the right conditions. \\ | ||
- | Too short and it could get make it's way into the hole in the plate and tear the seal. \\ | + | Too short and it could get make it's way into the hole in the plate and upset the center of the pressed in seal. \\ |
This could induce slop in the plate and allow it to try to spin the plate against the roll pin in the body. \\ | This could induce slop in the plate and allow it to try to spin the plate against the roll pin in the body. \\ | ||
As well as create a leak from the feed side and allow oil to float up into the engine thru the gearshaft bore. \\ | As well as create a leak from the feed side and allow oil to float up into the engine thru the gearshaft bore. \\ | ||
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====== Outer Plate ====== | ====== Outer Plate ====== | ||
- | |||
The outer plate is the bottom plate (with the pump installed). \\ | The outer plate is the bottom plate (with the pump installed). \\ | ||
The feed gerotors sit under this plate. \\ | The feed gerotors sit under this plate. \\ | ||
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Notice the difference of the cut out or recessed area of the inside diameter of the outer plates. \\ | Notice the difference of the cut out or recessed area of the inside diameter of the outer plates. \\ | ||
- | This is for the different style of seals. ((DirtyCory of the XLFORUM http://xlforum.net/forums/showthread.php?t=2071153)) \\ | + | This is for the different style of seals. ((DirtyCory of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/194881-let-s-study-the-77-85-oil-pump-parts-and-changes-and-when?t=2071153)) \\ |
Either plate will fit 77-90 oil pumps with their respective seals. \\ | Either plate will fit 77-90 oil pumps with their respective seals. \\ | ||
|{{:techtalk:ih:oil:outer_plates_by_dirtycory_-_annotated.jpg?direct&500|}}| | |{{:techtalk:ih:oil:outer_plates_by_dirtycory_-_annotated.jpg?direct&500|}}| | ||
- | | Outer plate comparison ((photo by DirtyCory of the XLFORUM, annotated by Hippysmack http://xlforum.net/forums/showthread.php?t=2071153)) | | + | | Outer plate comparison ((photo by DirtyCory of the XLFORUM, annotated by Hippysmack https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/194881-let-s-study-the-77-85-oil-pump-parts-and-changes-and-when?t=2071153)) | |
|{{:techtalk:evo:oil:83-90_oil_pump_outer_plate_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:83-90_oil_pump_outer_plate_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:83-90_oil_pump_outer_plate_3_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:evo:oil:83-90_oil_pump_outer_plate_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:83-90_oil_pump_outer_plate_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:83-90_oil_pump_outer_plate_3_by_hippysmack.jpg?direct&300|}}| |