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techtalk:ih:oil06 [2020/10/11 04:14] hippysmack [Breather Vent / Tube] |
techtalk:ih:oil06 [2021/02/19 21:59] hippysmack [Transmission Vent Hose (77-85)] |
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| * **If engine uses too much oil**; | * **If engine uses too much oil**; | ||
| * Check the breather valve for incorrect timing (57-76) or a plugged or non flexible condition (77-85). | * Check the breather valve for incorrect timing (57-76) or a plugged or non flexible condition (77-85). | ||
| - | * On models with a chain oiler, adjust the chain oiler adjusting screw to make sure it's not over oiling. | + | * On 57-76 models with a chain oiler, turn the adjusting screw to make sure it's not over oiling or just plug it off. |
| * Crankcase pressure restrictions. Look for kinks / restrictions in the oil tank vent line or breather vent. \\ Also check for a plugged oil filter (if applicable). | * Crankcase pressure restrictions. Look for kinks / restrictions in the oil tank vent line or breather vent. \\ Also check for a plugged oil filter (if applicable). | ||
| * Loose parts. Look for external oil leaks. | * Loose parts. Look for external oil leaks. | ||
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| * **If you have an oil leak from anywhere, the oil tank is subject to having oil all over it**. | * **If you have an oil leak from anywhere, the oil tank is subject to having oil all over it**. | ||
| * It is an accumulation of spills from filling, blowback from engine gaskets / seals / breathers and road grunge. | * It is an accumulation of spills from filling, blowback from engine gaskets / seals / breathers and road grunge. | ||
| - | * **The best way to find out if the oil tank is leaking is to clean it up** (try some blue dawn and a nylon brush). \\ (and use some spray SOFT-N-DRI or talcum powder in the area) See [[start|Leaking with Engine Running]] below. | + | * **The best way to find out if the oil tank is leaking is to clean it up** (try some blue dawn and a nylon brush). \\ (and use some spray SOFT-N-DRI or talcum powder in the area) See [[techtalk:ih:oil06#leaking_with_engine_running_weeping_gaskets|Leaking with Engine Running]] below. |
| * **83-93 oil tanks are prone to cracking and leaking where the oil tank and battery tray are connected**. | * **83-93 oil tanks are prone to cracking and leaking where the oil tank and battery tray are connected**. | ||
| * Fractures were due to poorly supporting the weight of the battery. ((Four Speed of the XLFORUM http://xlforum.net/forums/showthread.php?t=1971026)) \\ Harley offered 62472-93A and 62482-93A oil tank upgrade kits for replacement (94-96 tank assembly). \\ However, the original oil tank can be reinforced and welded. | * Fractures were due to poorly supporting the weight of the battery. ((Four Speed of the XLFORUM http://xlforum.net/forums/showthread.php?t=1971026)) \\ Harley offered 62472-93A and 62482-93A oil tank upgrade kits for replacement (94-96 tank assembly). \\ However, the original oil tank can be reinforced and welded. | ||
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| * Our bikes have 2 oil pumps. A supply pump (the skinny gear set) & a return pump (the thicker gears). ((Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1244538&page=2)) \\ The return pump has a larger flow than the supply pump. This is to make sure any oil that get pumped in definitely gets pumped back out. \\ If you watch the return oil as it goes back to the tank you will see it returns in "spurts". \\ The oil part of the spurts matches the amount that the feed is pulling from tank. \\ That's why the oil level in the tank remains the same while the bike is running. \\ The air part of the spurts is the extra cap of the return pump over the supply. \\ So the return would pressurize the tank because it's pumping this extra air back. \\ Air pressure in the tank is relieved thru the vent line back to the camcase where it came from in the 1st place. \\ That's why the vent line is always the highest one on the tank so it's above the oil level. \\ If it was below the oil level, oil would be forced into the camcase causing wetsumping. | * Our bikes have 2 oil pumps. A supply pump (the skinny gear set) & a return pump (the thicker gears). ((Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1244538&page=2)) \\ The return pump has a larger flow than the supply pump. This is to make sure any oil that get pumped in definitely gets pumped back out. \\ If you watch the return oil as it goes back to the tank you will see it returns in "spurts". \\ The oil part of the spurts matches the amount that the feed is pulling from tank. \\ That's why the oil level in the tank remains the same while the bike is running. \\ The air part of the spurts is the extra cap of the return pump over the supply. \\ So the return would pressurize the tank because it's pumping this extra air back. \\ Air pressure in the tank is relieved thru the vent line back to the camcase where it came from in the 1st place. \\ That's why the vent line is always the highest one on the tank so it's above the oil level. \\ If it was below the oil level, oil would be forced into the camcase causing wetsumping. | ||
| * Oil carry over may occur while driving the vehicle at highway speeds. The amount of carry over is directly related to the amount of restriction. ((HD Tech Tips dated November 8, 1985)) \\ More restriction equals 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. \\ Pull the line off at the tank and make sure you can blow through it into the cam gear case. \\ Then blow through the oil tank fitting with the lid off and make sure that path is clear. | * Oil carry over may occur while driving the vehicle at highway speeds. The amount of carry over is directly related to the amount of restriction. ((HD Tech Tips dated November 8, 1985)) \\ More restriction equals 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. \\ Pull the line off at the tank and make sure you can blow through it into the cam gear case. \\ Then blow through the oil tank fitting with the lid off and make sure that path is clear. | ||
| + | |||
| + | ===== Chain Oiler (57-76) ===== | ||
| + | |||
| + | The chain oiler is a designed leak to keep the chain from rusting up. \\ | ||
| + | Most will either plug the oiler fitting with a bolt / screw or remove the oiler fitting and install an 1/8"x27 NPT plug there and oil the chain by other means. \\ | ||
| ===== Cam Cover or Primary Cover ===== | ===== Cam Cover or Primary Cover ===== | ||
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| | Pulling oil seal gently with small bicycle tire iron. ((photo by Hopper of the XLFORUM http://xlforum.net/forums/showthread.php?t=209347&page=11)) | | | Pulling oil seal gently with small bicycle tire iron. ((photo by Hopper of the XLFORUM http://xlforum.net/forums/showthread.php?t=209347&page=11)) | | ||
| |{{:techtalk:ih:oil:removing_cam_seal_in_cover_by_hopper.jpg?direct&300|}}| | |{{:techtalk:ih:oil:removing_cam_seal_in_cover_by_hopper.jpg?direct&300|}}| | ||
| - | ===== Cam Gear Oiler ('85 only) ===== | ||
| - | |||
| - | Starting with crankcase number 785 303 002, manufactured after October 29, 1984, a cam gear oiler was installed in the gearcase ceiling. ((HD TSB #M-899 dated November 30, 1984)) \\ | ||
| - | The cam gear oiler directs oil from the top end oil passage to the gear mesh between first and second gears and third and fourth gears. \\ | ||
| - | Direct lubrication of the gear teeth allows tighter gear fitment. Gear backlash and noise are reduced. \\ | ||
| - | |||
| - | * The oiler tube has restricted orifices to spray the gears and still retain main oil feed pressure from whence the oil came (top oil feed galley). | ||
| - | * There is an O-ring on the oiler tube nipple that is pressed into the ceiling of the gearcase. | ||
| - | * If the O-ring fails to seal the oiler tube, feed oil pressure to the top end could be low. \\ You probably wouldn't see a leak as it would be inside the gearcase. | ||
| - | |||
| - | |||
| - | |Cam oiler tube hole in gearcase. ((photo by Iron Mike of the XLFORUM, labeled by Hippysmack http://xlforum.net/forums/showthread.php?t=1750617&page=116)) | Cam gear oiler installed. ((photo by iNSaNeSHaNe of the XLFORUM http://xlforum.net/forums/showthread.php?t=1750617&page=122)) | | ||
| - | |{{:techtalk:ih:engmech:1985_cam_gear_oiler_gearcase_by_iron_mike.jpg?direct&300|}}|{{:techtalk:ih:engmech:1985_cam_gear_oiler_by_insaneshane.jpg?direct&300|}}| | ||
| ===== Breather Vent / Tube ===== | ===== Breather Vent / Tube ===== | ||
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| Blow on the hose end to make sure you can push air thru it. Do not used compressed air as that can damage the sprocket shaft seal. \\ | Blow on the hose end to make sure you can push air thru it. Do not used compressed air as that can damage the sprocket shaft seal. \\ | ||
| Reroute the hose if it is showing a kink in placement or replace it if you can't blow through it. \\ | Reroute the hose if it is showing a kink in placement or replace it if you can't blow through it. \\ | ||
| + | You can also take off the primary chain inspection cap and blow air into the primary compartment. \\ | ||
| + | You should hear and feel the air come out of the inspection hole and with the cap off, you are not pressurizing anything too much. ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=944018&page=2)) \\ | ||
| There should be no sags in the hose between the attachment to the engine and the open end of the hose. \\ | There should be no sags in the hose between the attachment to the engine and the open end of the hose. \\ | ||
| The hose should route up from the engine and loop down open ended to allow air to escape and oil to separate from the air and drop back down into the tranny compartment. \\ | The hose should route up from the engine and loop down open ended to allow air to escape and oil to separate from the air and drop back down into the tranny compartment. \\ | ||
