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techtalk:ih:oil05 [2019/06/16 02:32] hippysmack [Case Oiling and Drainage] |
techtalk:ih:oil05 [2020/08/05 17:42] hippysmack ['77 and Later Cases] |
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| ====== Top End Oiling ====== | ====== Top End Oiling ====== | ||
| - | ===== Rocker arm / Valve oiling ===== | + | ===== Rocker Arm / Valve Oiling ===== |
| + | | Rocker arm shaft. ((photo by jmmarks70 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1774605)) | Oil flow. ((photo by jmmarks70 of the XLFORUM - annotated by Hippysmack http://xlforum.net/forums/showthread.php?t=1774605)) | Exhaust valve squirter. ((photo by jmmarks70 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1774605)) | | ||
| + | |{{:techtalk:ih:oil:rocker_arm_shaft_1_by_jmmarks70.jpg?direct&300|}}|{{:techtalk:ih:oil:rocker_arm_shaft_2_by_jmmarks70.jpg?direct&300|}}|{{:techtalk:ih:oil:exhaust_rocker_arm_by_jmmarks70.jpg?direct&300|}}| | ||
| ===== Rocker Box Oiling ===== | ===== Rocker Box Oiling ===== | ||
| Oil travels in a passage between the two rocker arm shafts (big end). \\ | Oil travels in a passage between the two rocker arm shafts (big end). \\ | ||
| Line 34: | Line 36: | ||
| ===== Oil Pump Scavenge ===== | ===== Oil Pump Scavenge ===== | ||
| See also the [[techtalk:ih:oil03|IH Oil Pump]] section of the Sportsterpedia. \\ | See also the [[techtalk:ih:oil03|IH Oil Pump]] section of the Sportsterpedia. \\ | ||
| + | ==== '57-'76 Cases ==== | ||
| + | |||
| + | The two crankcase halves together form the oil scavenging slot where oil is sent out of the sump to the oil pump. \\ | ||
| + | The open slot receives oil by splash from the wheels and oil is forced into and thru the slot by way of positive crankcase pressure (downstroke of the pistons). \\ | ||
| + | The scavenge slot is blocked off on the left side by the crankcase wall. \\ | ||
| + | |||
| + | {{:techtalk:ih:engmech:cc_flow_1_by_dr_dick.jpg?direct&300|}} ((photo by Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1204854&page=3)) {{:techtalk:ih:oil:transfer_valve_explained_5_by_dr_dick.jpg?direct&300|}} ((photo by Dr Dick of the XLFORUM http://xlforum.net/forums/showpost.php?p=3886388&postcount=40)) {{:techtalk:ih:oil:transfer_valve_2_by_ironheadjunkie.jpg?direct&300|}} ((photo by ironheadjunkie http://xlforum.net/forums/showthread.php?t=1495746)) | ||
| + | |||
| ==== '77 and Later Cases ==== | ==== '77 and Later Cases ==== | ||
| The "drain plug" on the bottom of the case is simply a threaded plug that caps the oil scavenging passageway. ((bobbystat of the XLFORUM http://xlforum.net/forums/showthread.php?t=1950691)) \\ | The "drain plug" on the bottom of the case is simply a threaded plug that caps the oil scavenging passageway. ((bobbystat of the XLFORUM http://xlforum.net/forums/showthread.php?t=1950691)) \\ | ||
