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techtalk:ih:oil03e [2021/11/07 19:59]
– [77-85 Oil Pump Removal and Inspection] hippysmack |
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techtalk:ih:oil03e [2024/01/01 18:40] (current)
– hippysmack |
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| * Disconnect the oil lines and oil pressure switch wire. |
| * Remove the four mounting bolts and the pump should drop down. |
* There is a flat spot on the frame just under the pump. ((IronMick of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/77330-oil-pump-1977-up?t=554323)) |
| * The complete pump assembly comes out as a unit. |
* It´s not possible to take only the cover out because of the of limited space between the cover and frame. ((acb2 of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/77330-oil-pump-1977-up?t=554323)) |
* Its a tight squeeze but you can wriggle the pump out. ((russzx6 of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/77330-oil-pump-1977-up?t=554323)) |
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| ===== Pump Stuck to Engine Case ===== |
| The FSM says to apply gasket sealer to the gasket before installation. \\ |
There are also times when a gasket could not be found, so RTV or other sealers were used in addition to or instead of a gasket. ((Farmer00-1 of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/77330-oil-pump-1977-up?t=554323)) \\ |
| Therefore, expect that to make it more difficult to remove the pump from the engine. \\ |
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| * First, be patient with it. |
* Try to turn the motor over by hand. It may push the pump out. ((Jason's Sporty of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/194711-86-883-xlh-oil-pump?t=2071005&highlight=oil+pump)) |
| * Try a rubber mallet. |
| * Gently tap down on the pump's rear side so you're not forcing extra pressure against the drive gear on the pinion shaft. |
| * Try a short piece of 2x4 to gently tap on the pump. |
| * Try using a crowbar with a "catspaw" on the rear side of the pump. |
* It's a wood working tool for pulling nails. ((123456qwerty of the XLFORUM httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/194711-86-883-xlh-oil-pump?t=2071005&highlight=oil+pump)) |
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| ===== Gasket Removal ===== |
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| Below PB Blaster was used with an auto window scraper. ((photos by Hippysmack)) \\ |
| |{{:techtalk:ref:tools:removing_gasket_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ref:tools:removing_gasket_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ref:tools:removing_gasket_3_by_hippysmack.jpg?direct&300|}}| |
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| ===== Stuck Cover Gasket ===== |
| The spring washer inside the pump puts a lot of tension against the cover. \\ |
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| * However, a 24 hour soak will help to soften the gasket / sealer and make it easier to break free. |
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| Carburetor Cleaner ((photo by Hippysmack httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-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/page4?t=2071153&page=4)) ||| |
| |{{techtalk:ref:genmsr:parts_cleaner_1_by_hippysmack.jpg?direct&300|}}|{{techtalk:ref:genmsr:parts_cleaner_3_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:parts_cleaner_6_by_hippysmack.jpg?direct&300|}}| |
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| This oil pump had to be soaked overnite before the cover would separate from the body. \\ |
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| Cleaning and soaking gaskets for more easy removal ((photos by Hippysmack httphttps://www.xlforum.net/forumsforum/showthread.phpsportster-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/page4?t=2071153&page=4)) || |
| |{{techtalk:ref:genmsr:parts_cleaner_4_by_hippysmack.jpg?direct&300|}}|{{techtalk:ref:genmsr:parts_cleaner_2_by_hippysmack.jpg?direct&300|}}| |
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| ====== Disassembly ====== |
| Wiggle the cover off and the feed gerotors are exposed. |
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| * The outer plate is held in place by a solid pin in the gearshaft. \\ |
| * It's a loose fit in the hole in the gearshaft and it's held in place by tension of the spring washer between the plates. |
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| |{{:techtalk:ih:oil:77-e83_oil_pump_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-e83_oil_pump_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:lower_shaft_pin_installed_by_hippysmack.jpg?direct&300|}}| |
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