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techtalk:evo:oil03 [2019/08/05 12:47] ixl2relax [Known Drive Gear Failure] |
techtalk:evo:oil03 [2020/11/07 04:46] hippysmack [Oil Pump Pressure] |
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| | Typical 98-up gerotor positioning over the pickup cavities (07 pump shown). ((photos by Hippysmack)) || | | Typical 98-up gerotor positioning over the pickup cavities (07 pump shown). ((photos by Hippysmack)) || | ||
| |{{:techtalk:evo:oil:2007_and_up_oil_pump_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:2007_and_up_oil_pump_5a_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:evo:oil:2007_and_up_oil_pump_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:2007_and_up_oil_pump_5a_by_hippysmack.jpg?direct&300|}}| | ||
| - | ====== Oil Pump Pressure ====== | + | ====== Oil Pump Pressure (86-Up) ====== |
| + | See also [[techtalk:ref:oil15|Installing an Oil Pressure Gauge]] in the REF section of the Sportsterpedia. \\ | ||
| + | |||
| + | Engine oil pressure was measured (by the MoCo) with a pressure gauge at the oil pump. \\ | ||
| Expected oil pump pressure per FSM's: \\ | Expected oil pump pressure per FSM's: \\ | ||
| + | |||
| ===== Gauge mounted at tappet hole plug ===== | ===== Gauge mounted at tappet hole plug ===== | ||
| As checked with hot oil and a gauge at the plug hole on the engine case between the tappets. \\ | As checked with hot oil and a gauge at the plug hole on the engine case between the tappets. \\ | ||
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| ====== Oil Pump Drive Gear ====== | ====== Oil Pump Drive Gear ====== | ||
| **88 and up**: \\ | **88 and up**: \\ | ||
| + | A material change to cast iron for increased service life was implemented on April 23, 1992. ((HD Tech Tip #TT039 dated July 1992)) \\ | ||
| + | The new gear has a part number change to 26318-88A. This part will retrofit to all Sportster models, 1988 and later. \\ | ||
| + | |||
| Below is a used gear that does show some wear. \\ | Below is a used gear that does show some wear. \\ | ||
| {{:techtalk:evo:oil:91-up_oil_pump_drive_gear_1_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)){{:techtalk:evo:oil:illustration_of_helical_gear_tooth_formation_by_hippysmack.jpg?direct&300|}} ((drawing by Hippysmack)) \\ | {{:techtalk:evo:oil:91-up_oil_pump_drive_gear_1_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)){{:techtalk:evo:oil:illustration_of_helical_gear_tooth_formation_by_hippysmack.jpg?direct&300|}} ((drawing by Hippysmack)) \\ | ||
