Differences
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| techtalk:evo:oil03 [2024/05/07 00:42] – hippysmack | techtalk:evo:oil03 [2024/05/07 00:43] (current) – hippysmack | ||
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| | 86-90 Oil Pump Oiling Paths. ((photo by Hippysmack)) | | 86-90 Oil Pump Oiling Paths. ((photo by Hippysmack)) | ||
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| + | |||
| + | ====== Oil Pump - Complete Unit Part Numbers ====== | ||
| + | |||
| + | **1986-1990 Models - XL P/N = 26204-86**\\ | ||
| + | - pump body catalog p/n 26484-86\\ | ||
| + | - pump body casting p/n 26485-\\ | ||
| + | ... casting p/n is in return cavity\\ | ||
| + | ... also has a " | ||
| + | ... also has a " | ||
| + | - bottom cover catalog p/n 26486-86\\ | ||
| + | - bottom cover casting p/n 26487-86\\ | ||
| + | |||
| + | **1991-1996 Models - XL P/N = 26204-91**\\ | ||
| + | - pump body casting p/n in 26485-90 \\ | ||
| + | ... casting p/n is in the return cavity\\ | ||
| + | ... also has casting #s 1 and 380 in opposite return cavity\\ | ||
| + | - pump cover casting p/n 26487-90\\ | ||
| + | ... casting p/n is on the outside of the cover\\ | ||
| + | |||
| + | **1997 Models - XL P/N = 26204-91**\\ | ||
| + | - pump body casting p/n in 26485-90A \\ | ||
| + | ... casting p/n is in the return cavity\\ | ||
| + | - pump cover casting p/n 26487-90A\\ | ||
| + | ... casting p/n is on the outside of the cover\\ | ||
| + | |||
| + | **1998-1999 Models - XL P/N = 26204-98**\\ | ||
| + | - From the internal P/N changes it appears that this new\\ | ||
| + | ... P/N was generated because of a change in the\\ | ||
| + | ... Gear Shaft and Gerotor Return set of gears\\ | ||
| + | - has body casting P/N 26487-98 in the return cavity\\ | ||
| + | - has bottom cover casting P/N 26487-98 on the outside\\ | ||
| + | |||
| + | **2000-2006 Models - XL P/N = 26204-91A**\\ | ||
| + | - P/N change appears to be related to fitting changes \\ | ||
| + | … feed inlet and outlet have -A suffix but no change in fitting size \\ | ||
| + | - has bottom cover casting P/N 26487-98\\ | ||
| + | |||
| + | **2007-later Models - XL P/N = 26204-91A (new design)**\\ | ||
| + | - **is a different design w/same P/N** (How crazy is that?)\\ | ||
| + | - is retrofitable to 1991-2006\\ | ||
| + | - has body casting P/N 26211-07 in the return cavity\\ | ||
| + | - has bottom cover casting P/N 26213-07 on the outside\\ | ||
| + | |||
| + | **Buell P/N - 26357-02B**\\ | ||
| + | - same pump as XL 26204-91A (new design) but with different fittings\\ | ||
| + | - will bolt up but you need to change the fittings over to XL style\\ | ||
| + | - has bottom cover casting P/N 26213-07\\ | ||
| + | |||
| + | **Buell P/N - 26357-02**\\ | ||
| + | - Same pump as 1998-1999 XL 26204-98 but with different fittings \\ | ||
| + | … same gerotors, same cover casting number \\ | ||
| + | |||
| + | See these XLForum threads:\\ | ||
| + | https:// | ||
| + | https:// | ||
| ====== Oil Pump Function ====== | ====== Oil Pump Function ====== | ||
| Line 178: | Line 233: | ||
| This is why pressure is always highest on cold startup and pressure falls as the oil heats up. \\ | This is why pressure is always highest on cold startup and pressure falls as the oil heats up. \\ | ||
| Colder oil is thicker and more resistant to flow. Hotter oil is thinner less resistant to flow. \\ | Colder oil is thicker and more resistant to flow. Hotter oil is thinner less resistant to flow. \\ | ||
| - | |||
| ====== Priming the Oil Pump ====== | ====== Priming the Oil Pump ====== | ||
| Line 192: | Line 246: | ||
| * Another way to prime the pump is to use assembly lube on the gerotors and inside of the pump before installing it. ((aswracing of the XLFORUM https:// | * Another way to prime the pump is to use assembly lube on the gerotors and inside of the pump before installing it. ((aswracing of the XLFORUM https:// | ||
| * You can also using a large syringe with a tapered tip inserted into the oil supply hose on the bottom of the oil tank. ((ericfreeman of the XLFORUM https:// | * You can also using a large syringe with a tapered tip inserted into the oil supply hose on the bottom of the oil tank. ((ericfreeman of the XLFORUM https:// | ||
| - | |||
| - | ====== Oil Pump - Complete Unit Part Numbers ====== | ||
| - | |||
| - | **1986-1990 Models - XL P/N = 26204-86**\\ | ||
| - | - pump body catalog p/n 26484-86\\ | ||
| - | - pump body casting p/n 26485-\\ | ||
| - | ... casting p/n is in return cavity\\ | ||
| - | ... also has a " | ||
| - | ... also has a " | ||
| - | - bottom cover catalog p/n 26486-86\\ | ||
| - | - bottom cover casting p/n 26487-86\\ | ||
| - | |||
| - | **1991-1996 Models - XL P/N = 26204-91**\\ | ||
| - | - pump body casting p/n in 26485-90 \\ | ||
| - | ... casting p/n is in the return cavity\\ | ||
| - | ... also has casting #s 1 and 380 in opposite return cavity\\ | ||
| - | - pump cover casting p/n 26487-90\\ | ||
| - | ... casting p/n is on the outside of the cover\\ | ||
| - | |||
| - | **1997 Models - XL P/N = 26204-91**\\ | ||
| - | - pump body casting p/n in 26485-90A \\ | ||
| - | ... casting p/n is in the return cavity\\ | ||
| - | - pump cover casting p/n 26487-90A\\ | ||
| - | ... casting p/n is on the outside of the cover\\ | ||
| - | |||
| - | **1998-1999 Models - XL P/N = 26204-98**\\ | ||
| - | - From the internal P/N changes it appears that this new\\ | ||
| - | ... P/N was generated because of a change in the\\ | ||
| - | ... Gear Shaft and Gerotor Return set of gears\\ | ||
| - | - has body casting P/N 26487-98 in the return cavity\\ | ||
| - | - has bottom cover casting P/N 26487-98 on the outside\\ | ||
| - | |||
| - | **2000-2006 Models - XL P/N = 26204-91A**\\ | ||
| - | - P/N change appears to be related to fitting changes \\ | ||
| - | … feed inlet and outlet have -A suffix but no change in fitting size \\ | ||
| - | - has bottom cover casting P/N 26487-98\\ | ||
| - | |||
| - | **2007-later Models - XL P/N = 26204-91A (new design)**\\ | ||
| - | - **is a different design w/same P/N** (How crazy is that?)\\ | ||
| - | - is retrofitable to 1991-2006\\ | ||
| - | - has body casting P/N 26211-07 in the return cavity\\ | ||
| - | - has bottom cover casting P/N 26213-07 on the outside\\ | ||
| - | |||
| - | **Buell P/N - 26357-02B**\\ | ||
| - | - same pump as XL 26204-91A (new design) but with different fittings\\ | ||
| - | - will bolt up but you need to change the fittings over to XL style\\ | ||
| - | - has bottom cover casting P/N 26213-07\\ | ||
| - | |||
| - | **Buell P/N - 26357-02**\\ | ||
| - | - Same pump as 1998-1999 XL 26204-98 but with different fittings \\ | ||
| - | … same gerotors, same cover casting number \\ | ||
| - | |||
| - | See these XLForum threads:\\ | ||
| - | https:// | ||
| - | https:// | ||
| ====== Oil Pump Gaskets / Seals ====== | ====== Oil Pump Gaskets / Seals ====== | ||
