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techtalk:ih:oil03a [2018/12/23 00:30] hippysmack [Gerotors] |
techtalk:ih:oil03a [2019/02/16 18:25] hippysmack [77-E83] |
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===== Oil Pump Body ===== | ===== Oil Pump Body ===== | ||
+ | ==== 77-E83 ==== | ||
|{{:techtalk:ih:oil:77-85_oil_pump_body_9_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_body_10_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:ih:oil:77-85_oil_pump_body_9_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_body_10_by_hippysmack.jpg?direct&300|}}| | ||
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|{{:techtalk:ih:oil:77-85_oil_pump_body_5_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_body_6_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_body_7_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:ih:oil:77-85_oil_pump_body_5_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_body_6_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_body_7_by_hippysmack.jpg?direct&300|}}| | ||
+ | ==== L83-85 ==== | ||
+ | |||
+ | | Late 83-85 pump body ((photo by marklocklear of the XLFORUM http://xlforum.net/forums/showthread.php?p=5729472#post5729472)) | | ||
+ | |{{:techtalk:ih:oil:l83_pump_body_by_marklocklear.jpg?direct&300|}}| | ||
===== Oil Pump Cover ===== | ===== Oil Pump Cover ===== | ||
+ | ==== 77-E83 ==== | ||
+ | |||
|{{:techtalk:ih:oil:77-85_oil_pump_cover_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_cover_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_cover_3_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:ih:oil:77-85_oil_pump_cover_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_cover_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_cover_3_by_hippysmack.jpg?direct&300|}}| | ||
|{{:techtalk:ih:oil:77-85_oil_pump_cover_4_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_cover_5_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_cover_6_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:ih:oil:77-85_oil_pump_cover_4_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_cover_5_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_cover_6_by_hippysmack.jpg?direct&300|}}| | ||
+ | |||
+ | ==== L83-85 ==== | ||
+ | |||
+ | |Late 83-85 pumpcover ((photo by marklocklear of the XLFORUM http://xlforum.net/forums/showthread.php?p=5729472#post5729472))| | ||
+ | |{{:techtalk:ih:oil:l83_pump_cover_marklocklear.jpg?direct&300|}}| | ||
====== Gearshaft ====== | ====== Gearshaft ====== | ||
See also [[techtalk:ih:oil03b#gear_shaft_dims|Gear Shaft Dims]]. \\ | See also [[techtalk:ih:oil03b#gear_shaft_dims|Gear Shaft Dims]]. \\ | ||
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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. \\ | ||
- | It also sets the lowest position for the plate and return gerotors inside the pump. \\ | + | It also sets the lowest position for the inner plate and return gerotors inside the pump. \\ |
|{{:techtalk:ih:oil:77-85_oil_pump_gear_shaft_retaining_ring_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_retaining_ring_location_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:ih:oil:77-85_oil_pump_gear_shaft_retaining_ring_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_retaining_ring_location_by_hippysmack.jpg?direct&300|}}| | ||
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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. \\ | ||
- | If the pin holding the gearshaft is too short, it can get between the gearshaft and the housing bore. \\ | + | 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. \\ | ||
+ | This could induce slop in the plate and allow it to try to spin the plate against the roll pin in the body. \\ | ||
|{{:techtalk:ih:oil:77-85_oil_pump_gear_shaft_pins_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_gear_shaft_pins_3_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_gearshaft_pin_location_5_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:ih:oil:77-85_oil_pump_gear_shaft_pins_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_gear_shaft_pins_3_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_gearshaft_pin_location_5_by_hippysmack.jpg?direct&300|}}| | ||
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====== Separator Plates ====== | ====== Separator Plates ====== | ||
The 77-90 oil pumps used two plates to separate the feed and scavenge gerotors. \\ | The 77-90 oil pumps used two plates to separate the feed and scavenge gerotors. \\ | ||
- | Both plates sit between the feed and return gears. \\ | + | Both plates sit between the feed and return gears and remain stationary during operation. \\ |
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. \\ | ||
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* It is pressed into the outer plate hole to seal around the driveshaft. | * It is pressed into the outer plate hole to seal around the driveshaft. | ||
- | |{{:techtalk:ih:oil:12036_outer_plate_seal-_by_dirtycory.jpg?direct&300|}}|{{:techtalk:ih:oil:12036a_outer_plate_seal-_by_dirtycory.jpg?direct&300|}}| | + | |
- | | (12036) 77-82 Outer plate seal. ((photo by DirtyCory of the XLFORUM http://xlforum.net/forums/showthread.php?t=2071153)) | (12036A) 83-85 Outer plate seal. ((photo by DirtyCory of the XLFORUM http://xlforum.net/forums/showthread.php?t=2071153)) | | + | |{{:techtalk:ih:oil:77-85_outer_plate_seals_2_by_nhps.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_outer_plate_seals_3_by_nhps.jpg?direct&300|}}|{{:techtalk:ih:oil:12036_and_12036a_outer_plate_seals.jpg?direct&300|}}| |
+ | | (12036) 77-82 Outer plate seal. (12036A) 83-85 Outer plate seal. ((photos by NHPS of the XLFORUM http://xlforum.net/forums/showthread.php?t=2072076)) || 12036 and 12036A comparison ((photo by Hippysmack)) | | ||
|{{:techtalk:ih:oil:outer_seal_installed_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:83-90_oil_pump_outer_plate_seal_4_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_3_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:ih:oil:outer_seal_installed_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:83-90_oil_pump_outer_plate_seal_4_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:86-90_oil_pump_disassembly_3_by_hippysmack.jpg?direct&300|}}| | ||
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|{{:techtalk:ih:oil:77-e83_return_gerotors_installed_position_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:ih:oil:77-e83_return_gerotors_installed_position_by_hippysmack.jpg?direct&300|}}| | ||
| 77-E83 return gerotors installed position ((photo by Hippysmack)) | | | 77-E83 return gerotors installed position ((photo by Hippysmack)) | | ||
- | ===== L83-85 ===== | + | |
- | (26491-83) Straight cut return gerotors. | + | ===== L83-90 ===== |
+ | (26491-83) Straight cut return gerotors: \\ | ||
+ | |||
+ | |{{:techtalk:evo:oil:l83-90_oil_pump_return_gerotors_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:l83-90_oil_pump_return_gerotors_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:l83-90_oil_pump_return_gerotors_4_by_hippysmack.jpg?direct&300|}}| | ||
+ | | L83-90 return gerotors (26491-83) ((photos by Hippysmack)) ||| | ||
====== Check Valve ====== | ====== Check Valve ====== | ||
See also; \\ | See also; \\ | ||
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====== Oil Pressure Switch ====== | ====== Oil Pressure Switch ====== | ||
See also; \\ | See also; \\ | ||
- | [[techtalk:ref:trouble07|Tesing the Oil Pressure Switch]] \\ | + | [[techtalk:ref:svcproc30|Tesing the Oil Pressure Switch]] \\ |
[[techtalk:ih:oil01#oil_pressure_switch|More on How the Ironhead Oil Pressure Switch Works]] \\ | [[techtalk:ih:oil01#oil_pressure_switch|More on How the Ironhead Oil Pressure Switch Works]] \\ | ||