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| playground:playground_temp [2025/11/02 14:51] – [Background and General Overview] hippysmack | playground:playground_temp [2025/11/02 18:16] (current) – [playground] hippysmack | ||
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| + | ====== playground temp ====== | ||
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| ====== 1935 Harley VL – Engine Oiling & Crankcase Breathing System ====== | ====== 1935 Harley VL – Engine Oiling & Crankcase Breathing System ====== | ||
| Article by Kurt C Melancon ((Rev 10.30.25)) \\ | Article by Kurt C Melancon ((Rev 10.30.25)) \\ | ||
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| The author created this document to record observations made on the subject systems during the disassembly of a 1935 Harley VLD. This document does not address the oil pump and its adjustments since those subjects are not relevant to the routing of oil within the engine or the crankcase breather system. Because changes occurred continuously in these systems over the 7 years of VL production (1930-1936), | The author created this document to record observations made on the subject systems during the disassembly of a 1935 Harley VLD. This document does not address the oil pump and its adjustments since those subjects are not relevant to the routing of oil within the engine or the crankcase breather system. Because changes occurred continuously in these systems over the 7 years of VL production (1930-1936), | ||
| - | Without a schematic of flow within the entire system, i.e., the flow of oil and air within the engine, it may be challenging for the reader to follow solely a written description. Bearing that in mind, the oiling/ | + | Without a schematic of flow within the entire system, i.e., the flow of oil and air within the engine, it may be challenging for the reader to follow solely a written description. Bearing that in mind, the oiling/ |
| ====== Background and General Overview ====== | ====== Background and General Overview ====== | ||
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| As quoted below, the standard procedure for lubricating a VL engine in regular service was provided in the 1934-1936 Rider’s Handbook. \\ | As quoted below, the standard procedure for lubricating a VL engine in regular service was provided in the 1934-1936 Rider’s Handbook. \\ | ||
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| - | __Draining | + | Drain and flush the crank case, and give it a supply of fresh oil at least every 750 miles. Do this while the motor is hot. To drain oil from crank case, press downward on drain valve rod at base of rear cylinder on left side of motor, and turn lever on top end until it catches under bracket attached to cylinder base as shown in Illus. 3. After draining off the old oil, close drain and inject about 4 pumpfuls of fresh oil into crankcase with hand oil pump. Start motor and run for one or two minutes ; then drain again. This will flush all the old oil out of case. Close drain, inject 3-1/ |
| - | Drain and flush the crank case, and give it a supply of fresh oil at least every 750 miles. Do this while the motor is hot. To drain oil from crank case, press downward on drain valve rod at base of rear cylinder on left side of motor, and turn lever on top end until it catches under bracket attached to cylinder base as shown in Illus. 3. After draining off the old oil, close drain and inject about 4 pumpfuls of fresh oil into crankcase with hand oil pump. Start motor and run for one or two minutes ; then drain again. This will flush all the old oil out of case. Close drain, inject 3-1/ | + | |
| Modern riders report that the 3-1/2 pumpful recommendation is ~ 4 oz of oil. The subject Handbook also informs about the expected oil consumption rate and special operating conditions, as follows. \\ | Modern riders report that the 3-1/2 pumpful recommendation is ~ 4 oz of oil. The subject Handbook also informs about the expected oil consumption rate and special operating conditions, as follows. \\ | ||
