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techtalk:ih:oil03 [2020/11/07 04:27] hippysmack [Production Oil Pumps] |
techtalk:ih:oil03 [2020/11/07 04:29] hippysmack [Oil Pump Pressure (57-85)] |
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| * The oil pump speeds were doubled to 1/2 of engine speed for the feed pump and a 4:1 ratio on the return side. | * The oil pump speeds were doubled to 1/2 of engine speed for the feed pump and a 4:1 ratio on the return side. | ||
| * The oil pump drive gear was re-activated as a breather only. ((1972-2003 HD XR-750 Service Manual pg 27)) | * The oil pump drive gear was re-activated as a breather only. ((1972-2003 HD XR-750 Service Manual pg 27)) | ||
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| - | ====== Oil Pump Pressure (57-85) ====== | ||
| - | Engine oil pressure was measured (by the MoCo) with a pressure gauge at the oil pump. \\ | ||
| - | Expected oil pump pressure per FSM's: \\ | ||
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| - | **Gauge mounted at oil pump**: \\ | ||
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| - | As checked with hot oil and a gauge at the oil pressure switch location at the oil pump. \\ | ||
| - | The oil pressure switch has to be removed for the gauge to be installed. \\ | ||
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| - | **1957-1969**: ((1959-1969 HD FSM pgs 3A-11, 3A-15)) \\ | ||
| - | Minimum: 3-7 psi (idle, with spark retarded) \\ | ||
| - | Normal riding conditions: 10-14 psi (6 psi at 20 mph) \\ | ||
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| - | **1970-1978**: ((HD 70-78 FSM pgs 3-1, 3-5)) \\ | ||
| - | Minimum: 3-7 psi (idle) \\ | ||
| - | Maximum: 15 psi (60 mph in high gear) \\ | ||
| - | Normal riding conditions: 4-15 psi | ||
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| - | **1979-1985**: ((1979-1985 HD FSM pgs 3-1, 3-10)) \\ | ||
| - | Minimum: 4-7 psi (idle) \\ | ||
| - | Maximum: 10-20 psi (3500 rpm) \\ | ||
| - | Normal riding conditions: 4-15 psi \\ | ||
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| - | **Note**: On a cold startup, expect pressure to reach ~60 psi ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1456449)) \\ | ||
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| - | {{:techtalk:ih:oil:oil_pressure_gauge_1_by_dieselox4.jpg?direct&300|}} ((photo by Dieselox4 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1456449)) {{:techtalk:ih:oil:oil_pressure_gauge_2_by_dieselox4.jpg?direct&300|}} ((photo by Dieselox4 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1456449)) | ||
