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techtalk:ih:engmech07a [2019/12/06 06:19] hippysmack [Timing the Breather Valve] |
techtalk:ih:engmech07a [2020/09/19 00:16] hippysmack [Timing the Breather Valve] |
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| It should not be heated to 'red hot' but just enough to allow it to expand some. \\ | It should not be heated to 'red hot' but just enough to allow it to expand some. \\ | ||
| - | The pinion gear should be installed onto the shaft so that the outer face of the gear is 5/16" outboard of the gasket surface. ((needspeed of the XLFORUM http://xlforum.net/forums/showthread.php?p=5792984#post5792984)) \\ | + | {{:techtalk:ih:engmech:pre-77_installing_pinion_gear_by_canadiantux.jpg?direct&300|}} |
| + | Pinion gear should be installed onto shaft so the outer face of the gear is 5/16" outboard of the gasket surface. ((needspeed of the XLFORUM http://xlforum.net/forums/showthread.php?p=5792984#post5792984)) ((photo by CanadianTux of the XLFORUM http://xlforum.net/forums/showthread.php?t=1708831&page=11)) \\ | ||
| In that position the oil pump drive gear has a lot of end play between the shaft shoulder and the back of the pinion gear as shown in your picture. \\ | In that position the oil pump drive gear has a lot of end play between the shaft shoulder and the back of the pinion gear as shown in your picture. \\ | ||
| When the engine runs the drive gear is thrust against the back of the pinion gear. \\ | When the engine runs the drive gear is thrust against the back of the pinion gear. \\ | ||
| So if you time the pump with the gear in the opposite direction pushed against the shaft shoulder it's very easy to get the lineup off a tooth. \\ | So if you time the pump with the gear in the opposite direction pushed against the shaft shoulder it's very easy to get the lineup off a tooth. \\ | ||
| If you are going to pull the pinion gear off you'll need to determine the position where the drive gear will end up with the pinion gear installed. \\ | If you are going to pull the pinion gear off you'll need to determine the position where the drive gear will end up with the pinion gear installed. \\ | ||
| - | Measuring from the gasket surface the length of the gear minus 5/16 should do it. \\ | + | Measuring from the gasket surface the length of the gear minus 5/16" should do it. \\ |
| - | + | ||
| **Note**: | **Note**: | ||
| Once the breather valve is correctly timed, the position of the flywheel and breather valve timing marks can be disregarded when installing timing gears (cams). \\ | Once the breather valve is correctly timed, the position of the flywheel and breather valve timing marks can be disregarded when installing timing gears (cams). \\ | ||
| - | {{:techtalk:ih:engmech:timing_the_breather_valve_1_by_canadiantux_annotated_by_hippysmack.jpg?direct&300|}} ((photo by Canadian Tux of the XLFORUM )) {{:techtalk:ih:engmech:ih_oil_pump_timing_by_hotrods316.jpg?direct&300|}} ((photo by hotrods316 of the XLFORUM http://xlforum.net/forums/showthread.php?t=170686&page=3)) {{:techtalk:ih:engmech:ih_oil_pump_timing_by_cbellamore.png?direct&300|}} ((photo by cbellamore of the XLFORUM annotated by Hippysmack)) \\ | + | {{:techtalk:ih:engmech:timing_the_breather_valve_1_by_canadiantux_annotated_by_hippysmack.jpg?direct&300|}} ((photo by Canadian Tux of the XLFORUM)) {{:techtalk:ih:engmech:ih_oil_pump_timing_by_hotrods316.jpg?direct&300|}} ((photo by hotrods316 of the XLFORUM http://xlforum.net/forums/showthread.php?t=170686&page=3)) {{:techtalk:ih:engmech:ih_oil_pump_timing_by_cbellamore.png?direct&300|}} ((photo by cbellamore of the XLFORUM annotated by Hippysmack)) \\ |
