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techtalk:ih:oil06 [2020/05/12 00:24] hippysmack |
techtalk:ih:oil06 [2020/08/15 03:16] hippysmack [Transmission Vent Hose] |
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| * More restriction, more carryover. In most cases the restriction is minor and translates to a small amount of carry over, which if left alone creates a bothersome mess. | * More restriction, more carryover. In most cases the restriction is minor and translates to a small amount of carry over, which if left alone creates a bothersome mess. | ||
| * Start looking for pinched hoses or a restrictive oil filter. | * Start looking for pinched hoses or a restrictive oil filter. | ||
| + | |||
| + | ==== Restricted Tappet Guide Drain Channel ==== | ||
| + | |||
| + | Oil from the rocker boxes drains down the pushrod tubes and enters holes in the tappet block to drain down into the gearcase. \\ | ||
| + | The drain channels can stop up sometimes. This backs up oil in the tubes and can cause a leak to form at the tube base. \\ | ||
| + | It could be the gasket or sometimes particles that have lodged in the holes. Try removing the tappet guide, clean / replace them and install new gaskets. ((ironheadjunkie of the XLFORUM http://xlforum.net/forums/showthread.php?t=1379395)) \\ | ||
| + | Some guides have one channel, some two, and there are some that have a spiral. \\ | ||
| + | Over the course of the motors lifetime, there's no telling what year or type of guides they may be since one fits all. \\ | ||
| + | But you do need to get it right, since the oil return thru the guide also lubricates the tappets. \\ | ||
| + | |||
| + | The pushrod tube below was holding oil and leaking after the engine was shut off. \\ | ||
| + | {{:techtalk:ih:oil:pushrod_tube_oil_leak_by_the_doctor71.jpg?direct&250|}} ((photo by The Doctor71 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1379395)) \\ | ||
| ==== Transmission Vent Hose ==== | ==== Transmission Vent Hose ==== | ||
| Line 252: | Line 264: | ||
| The gasket has been known to raise around the head oil drain and only on the inside edge of the gasket. \\ | The gasket has been known to raise around the head oil drain and only on the inside edge of the gasket. \\ | ||
| So no outward sign of the leak. With the head removed an experienced eye may be able to spot the problem. \\ | So no outward sign of the leak. With the head removed an experienced eye may be able to spot the problem. \\ | ||
| + | |||
| + | ===== Transmission Sprocket Splines ===== | ||
| + | |||
| + | A service replacement mainshaft sprocket nut (35049-71) was made available to prevent transmission oil leakage from the sprocket splines on 1971-E1984 models. \\ | ||
| + | The new sprocket nut encloses the end of the mainshaft and provides a metal to metal seal between the sprocket, lockwasher and nut. \\ | ||
| + | (when tightened to 35-65 ft-lbs torque) \\ | ||
| + | [[techtalk:miscres:miscres05#tsb_850-899|See TSB #M886 on the Service Bulletin page]] in the Sportsterpedia. \\ | ||
| + | |||
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| \\ | \\ | ||
| [[:techtalk:menu|{{:techtalk:gototechnicalmenu.jpg|}}]] | [[:techtalk:menu|{{:techtalk:gototechnicalmenu.jpg|}}]] | ||
