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| techtalk:ref:oil05e [2019/03/14 02:21] – [Routing the Regulator Discharge to the Oil Tank] hippysmack | techtalk:ref:oil05e [2024/09/10 03:06] (current) – [Oil Pressure Regulator] hippysmack | ||
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| ====== REF: Oiling & Lubrication - Sub-05E ====== | ====== REF: Oiling & Lubrication - Sub-05E ====== | ||
| - | ====== | + | ====== |
| - | See also [[techtalk: | + | See also in the Sportsterpedia: |
| + | |||
| + | * [[techtalk: | ||
| + | * [[techtalk: | ||
| + | * [[techtalk: | ||
| | 86-90 Oil Filter Pad ((photos by Hippysmack)) | | 86-90 Oil Filter Pad ((photos by Hippysmack)) | ||
| |{{: | |{{: | ||
| + | |||
| ====== Oil Pressure Regulator ====== | ====== Oil Pressure Regulator ====== | ||
| The oil pressure regulator in the 86-90 pump can malfunction from time to time. \\ | The oil pressure regulator in the 86-90 pump can malfunction from time to time. \\ | ||
| - | Having the regulator open prematurely is not optimal since you want full oiling capacity at all times (i.e. at hot engine idle). | + | Having the regulator open prematurely is not optimal since you want full oiling capacity at all times (i.e. at hot engine idle). |
| Reports of the valve leaking in the closed position and age on the regulator spring weakening it have prompted some to block the regulator off entirely. \\ | Reports of the valve leaking in the closed position and age on the regulator spring weakening it have prompted some to block the regulator off entirely. \\ | ||
| - | |||
| Below are some mods to accomplish this if so desired. \\ | Below are some mods to accomplish this if so desired. \\ | ||
| ===== Rendering the oil pressure regulator inoperable ===== | ===== Rendering the oil pressure regulator inoperable ===== | ||
| - | The regulator valve is suppose to keep the oil pressure from getting too high. ((norseXL of the XLFORUM | + | The regulator valve is suppose to keep the oil pressure from getting too high. ((norseXL of the XLFORUM |
| See more on the [[techtalk: | See more on the [[techtalk: | ||
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| This will render the plunger inoperable as there will now be too much oil pressure needed to overcome the increased spring pressure. | This will render the plunger inoperable as there will now be too much oil pressure needed to overcome the increased spring pressure. | ||
| - | {{: | + | {{: |
| **This mod is reversible**: | **This mod is reversible**: | ||
| Simply replace the 2" spring with a new OEM replacement. \\ | Simply replace the 2" spring with a new OEM replacement. \\ | ||
| + | |||
| ===== Blocking off the Oil Pressure Regulator ===== | ===== Blocking off the Oil Pressure Regulator ===== | ||
| Normally, when the regulator opens to purge excess pressure from the filter pad, the oil is routed thru a hole in the pad and into the gearcase. \\ | Normally, when the regulator opens to purge excess pressure from the filter pad, the oil is routed thru a hole in the pad and into the gearcase. \\ | ||
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| This will shut (or plug) off the pressure regulating valve. This puts the oiling system in the same unregulated state as the 92-and-up sportsters. \\ | This will shut (or plug) off the pressure regulating valve. This puts the oiling system in the same unregulated state as the 92-and-up sportsters. \\ | ||
| - | | Hole drilled, tapped 1/8" NPS and plugged with an 1/ | + | | Hole drilled, tapped 1/8" NPS and plugged with an 1/ |
| |{{: | |{{: | ||
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| ===== Routing the Regulator Discharge to the Oil Tank ===== | ===== Routing the Regulator Discharge to the Oil Tank ===== | ||
| - | This is a way to preserve the function of removing excess oil pressure from the filter pad and keep the gearcase safe from over oiling from the practice. \\ | + | This is a way to preserve the function of removing excess oil pressure from the filter pad and keep the gearcase safe from over oiling from the practice. \\ |
| + | The bypass oil from the regulator is oil that is not being put to use in the pressure side anyway. ((maru of the XLFORUM https:// | ||
| This mod has to be done in conjunction with blocking off the regulator discharge as in above. \\ | This mod has to be done in conjunction with blocking off the regulator discharge as in above. \\ | ||
| Else the excess pressure will still be dumped into the gearcase. \\ | Else the excess pressure will still be dumped into the gearcase. \\ | ||
| + | The excess pressure (bypass oil) is diverted directly back to tank via the oil pump return line or straight to the oil tank. \\ | ||
| + | (not to the gearcase or the sump) \\ | ||
| - | The excess pressure (bypass oil) is diverted directly back to tank via the oil pump return line, not to the gearcase or the sump. \\ | + | ==== Tapping |
| An extra hose is installed into the plug (737) and plumbed into the return hose near the oil pump with a " | An extra hose is installed into the plug (737) and plumbed into the return hose near the oil pump with a " | ||
| - | The clear hose in the picture below is only a temporary line to monitor the oil level in the sump during dyno testing. ((photo by Jorgen of the XLFORUM | + | The clear hose in the picture below is only a temporary line to monitor the oil level in the sump during dyno testing. ((photo by Jorgen of the XLFORUM |
| |{{: | |{{: | ||
| - | In addition, the plunger was seat was tapered (not necessary to this mod however). ((photos by Jorgen of the XLFORUM | + | In addition, the plunger was seat was tapered (not necessary to this mod however). ((photos by Jorgen of the XLFORUM |
| Drill and tap the plug (1/ | Drill and tap the plug (1/ | ||
| (the hole in the plug has also been tapered in the pic below, nice but not necessary for this mod) \\ | (the hole in the plug has also been tapered in the pic below, nice but not necessary for this mod) \\ | ||
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| ' | ' | ||
| Replace the " | Replace the " | ||
| + | |||
| + | ==== Tapping the Discharge Hole ==== | ||
| + | This is another way of getting the excess oil back to the tank without running it through the engine first. \\ | ||
| + | The rear discharge hole was plugged and the side of the discharge hole was tapped with and 1/8" nipple. \\ | ||
| + | |||
| + | A hole was drilled into the top of the mount behind the internal cavities for a hose to run from there straight to the oil tank cap. ((photo by norseXL of the XLFORUM https:// | ||
| + | |{{: | ||
| ====== Convert to a L84-85 Filter Pad ====== | ====== Convert to a L84-85 Filter Pad ====== | ||
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| Line routing is the same as in the 86-90 filter pad with exception that the outlet hole for filtered oil has 1/8" NPT threads. \\ | Line routing is the same as in the 86-90 filter pad with exception that the outlet hole for filtered oil has 1/8" NPT threads. \\ | ||
| - | (inlet on the outside, outlet in the center) \\ | + | (inlet on the outside |
| You'll either need to tap that hole for 1/4" NPT threads to use your existing oil lines. \\ | You'll either need to tap that hole for 1/4" NPT threads to use your existing oil lines. \\ | ||
| Or you could use a 1/8" to 1/4" reducer to attach the OEM return hose to the oil pump. \\ | Or you could use a 1/8" to 1/4" reducer to attach the OEM return hose to the oil pump. \\ | ||
| + | Pre-drill hole size for a 1/ | ||
| + | |||
| + | There is a circle imprint on the L84-85 mount where the 1/ | ||
| + | This will allow you to use the oil pressure switch on the existing 1/8" hole on the unfiltered side. \\ | ||
| + | Else you can use an 1/8" NPT " | ||
| Pics below are how the lines are routed normally on L84-85 models. \\ | Pics below are how the lines are routed normally on L84-85 models. \\ | ||
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| |{{: | |{{: | ||
| - | And how the lines are routed normally on L86-90 models. \\ | + | And how the lines are routed normally on 86-90 models. \\ |
| (filter on the feed part of the oil system) \\ | (filter on the feed part of the oil system) \\ | ||
| | 86-90 Oil Filter Pad ((photo by Hippysmack)) | | 86-90 Oil Filter Pad ((photo by Hippysmack)) | ||
