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techtalk:ih:oil03p [2021/11/11 21:15] hippysmack [Gerotor shear pins] |
techtalk:ih:oil03p [2021/11/11 21:26] hippysmack [Inspect both gerotor sets] |
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| **Check inner to outer gerotor clearance on each gerotor set**. \\ | **Check inner to outer gerotor clearance on each gerotor set**. \\ | ||
| Each gerotor set is made with an inner and outer piece. Mesh the two pieces together (as they normally would sit in operation). \\ | Each gerotor set is made with an inner and outer piece. Mesh the two pieces together (as they normally would sit in operation). \\ | ||
| + | This clearance has a direct relationship to oil pump flow and oil pressure. \\ | ||
| + | The wider the clearance the more the gerotors lose their ability to hold enough pressure to the outlet cavity. \\ | ||
| + | They also the ability to transfer oil from the feed cavity back to the inlet cavity and recirculate oil within the oil pump. \\ | ||
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| * Arrange so there is 1 inner tooth facing the center of the wide outer radius. \\ Use a feeler gauge between the inner tooth and outer radius there for a maximum of .004" clearance between them. \\ If the clearance is larger than .004", replace the affected gearotor set. Repeat for the other gerotor set. | * Arrange so there is 1 inner tooth facing the center of the wide outer radius. \\ Use a feeler gauge between the inner tooth and outer radius there for a maximum of .004" clearance between them. \\ If the clearance is larger than .004", replace the affected gearotor set. Repeat for the other gerotor set. | ||
| {{:techtalk:ih:oil:1977-1985_oil_pump_gerotors_-_checking_clearance_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) \\ | {{:techtalk:ih:oil:1977-1985_oil_pump_gerotors_-_checking_clearance_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) \\ | ||
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