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techtalk:evo:oil03i [2018/12/23 14:38] hippysmack [Gearshaft] |
techtalk:evo:oil03i [2024/01/05 03:43] (current) hippysmack |
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| ====== EVO: Oiling & Lubrication - Sub-03I ====== | ====== EVO: Oiling & Lubrication - Sub-03I ====== | ||
| ====== 86-90 Oil Pump (26204-86) Individual Parts and Pics ====== | ====== 86-90 Oil Pump (26204-86) Individual Parts and Pics ====== | ||
| + | See also See also [[techtalk:evo:oil03j#oil_pump_26204-86_parts_approximate_dims|86-90 Oil Pump (26204-86) Parts (approximate) Dims]] | ||
| ====== Oil Pump Body and Cover ====== | ====== Oil Pump Body and Cover ====== | ||
| ===== Oil Pump Body ===== | ===== Oil Pump Body ===== | ||
| Line 21: | Line 22: | ||
| ===== 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. | ||
| Line 31: | Line 31: | ||
| |{{:techtalk:evo:oil:86-90_oil_pump_cover_4_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_cover_5_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_cover_6_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:evo:oil:86-90_oil_pump_cover_4_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_cover_5_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_cover_6_by_hippysmack.jpg?direct&300|}}| | ||
| - | ===== Gearshaft ===== | + | ====== Gearshaft ====== |
| The gear shaft part number (26488-75) was used from 77-90. \\ | The gear shaft part number (26488-75) was used from 77-90. \\ | ||
| The gear has 20 teeth. \\ | The gear has 20 teeth. \\ | ||
| Line 39: | Line 39: | ||
| |{{:techtalk:evo:oil:86-90_oil_pump_gearshaft_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_gearshaft_2_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:evo:oil:86-90_oil_pump_gearshaft_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_gearshaft_2_by_hippysmack.jpg?direct&300|}}| | ||
| - | ===== Gearshaft Retaining Ring ===== | + | ====== Gearshaft Retaining Ring ====== |
| Gear shaft retaining ring (26497-75) was used on 77-90 model oil pumps. \\ | Gear shaft retaining ring (26497-75) was used on 77-90 model oil pumps. \\ | ||
| It keeps the inner plate, return gerotors and gearshaft locked in the pump. \\ | It keeps the inner plate, return gerotors and gearshaft locked in the pump. \\ | ||
| Line 46: | Line 46: | ||
| |{{:techtalk:evo:oil:86-90_oil_pump_gearshaft_retaining_ring_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_gearshaft_retaining_ring_2_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:evo:oil:86-90_oil_pump_gearshaft_retaining_ring_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_gearshaft_retaining_ring_2_by_hippysmack.jpg?direct&300|}}| | ||
| - | ===== Gearshaft Pins ===== | + | ====== Gearshaft Pins ====== |
| The gear shaft solid pin (26430-76), was used in 77-90 oil pumps. \\ | The gear shaft solid pin (26430-76), was used in 77-90 oil pumps. \\ | ||
| The diameter and lengths of the pins vary. \\ | The diameter and lengths of the pins vary. \\ | ||
| Line 53: | Line 53: | ||
| So, the exact length shouldn't be an issue for the gerotors. \\ | So, the exact length shouldn't be an issue for the gerotors. \\ | ||
| - | The installed lower pin also holds the outer plate in the pump body. \\ | + | The installed upper pin holds the gearshaft in the pump body during disassembly. \\ |
| - | + | The length of this pin shouldn't be an issue for the gearshaft. \\ | |
| - | The installed upper pin holds the gearshaft in the pump body. \\ | + | The retaining ring and return gears set the upper positioning of this pin inside the pump. \\ |
| - | The length of this pin can be an issue. \\ | + | |
| - | Too short and it won't keep the gearshaft in the pump. \\ | + | |
| There is a clearance between the pump bore and the gearshaft. \\ | There is a clearance between the pump bore and the gearshaft. \\ | ||
| The upper gearshaft bushing does reach to the end of it's bore in the housing where the pin resides. \\ | The upper gearshaft bushing does reach to the end of it's bore in the housing where the pin resides. \\ | ||
| So, there is extra clearance between the gearshaft and pump housing bore. \\ | So, there is extra clearance between the gearshaft and pump housing bore. \\ | ||
| - | After the retaining ring comes out, the shaft can drop into this tapered bore clearance and the pin can scratch the aluminum sides. \\ | + | After the retaining ring comes out, the shaft can drop into this tapered bore clearance and the lower pin can scratch the aluminum sides. \\ |
| + | |||
| + | 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. \\ | ||
| + | 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. \\ | ||
| + | As well as create a leak from the feed side and allow oil to float up into the engine thru the gearshaft bore. \\ | ||
| |{{:techtalk:evo:oil:86-90_oil_pump_gearshaft_pins_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_gearshaft_pins_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_gearshaft_pins_3_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:evo:oil:86-90_oil_pump_gearshaft_pins_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_gearshaft_pins_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_gearshaft_pins_3_by_hippysmack.jpg?direct&300|}}| | ||
| Line 70: | Line 74: | ||
| The plates are separated by a spring washer that puts tension against each plate in opposite directions. \\ | The plates are separated by a spring washer that puts tension against each plate in opposite directions. \\ | ||
| Thus sealing off the feed and scavenge sections. \\ | Thus sealing off the feed and scavenge sections. \\ | ||
| - | |{{:techtalk:evo:oil:86-90_oil_pump_separator_plates.jpg?direct&300|}}| | + | |{{:techtalk:evo:oil:86-90_oil_pump_separator_plates_by_hippysmack.jpg?direct&300|}}| |
| | Separator plate locations ((photo by Hippysmack)) | | | Separator plate locations ((photo by Hippysmack)) | | ||
| Line 82: | Line 86: | ||
| ====== 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. \\ | ||
| Line 89: | Line 92: | ||
| 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|}}| | ||
| Line 120: | Line 123: | ||
| | Spring washer (26461-77) ((photos by Hippysmack)) || | | Spring washer (26461-77) ((photos by Hippysmack)) || | ||
| - | |{{:techtalk:evo:oil:86-90_oil_pump_separator_plates.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_6_by_hippysmack.jpg?direct&300|}}| | + | |{{:techtalk:evo:oil:86-90_oil_pump_separator_plates_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_6_by_hippysmack.jpg?direct&300|}}| |
| | Spring washer location between the plates ((photo by Hippysmack)) |Spring washer fits inside and faces the inner plate. ((photo by Hippysmack))| | | Spring washer location between the plates ((photo by Hippysmack)) |Spring washer fits inside and faces the inner plate. ((photo by Hippysmack))| | ||
