Differences

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--- techtalk:evo:oil03 [2024/05/07 00:42]
hippysmack
+++ techtalk:evo:oil03 [2024/05/07 00:43] (current)
hippysmack
@@ Line 58: / Line 58: @@
 |  86-90 Oil Pump Oiling Paths. ((photo by Hippysmack))  |  91-97 Oil Pump Oiling Paths  ((photo by Hippysmack))  |  98 and Up Oil Pump Oiling Paths ((photo by bsaman of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/87615-crank-replacement-documentation/page2?t=691283&page=2))  |
 |{{:techtalk:evo:oil:86-90_oil_pump_oiling_paths_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:91-97_oil_pump_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:98-up_oil_pump_oiling_paths_by_bsaman.jpg?direct&300|}}|
+====== 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 "2" stamped next to casting #\\
+... also has a "T" stamped into opposite return cavity\\
+- 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://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/43858-evo-sportster-engine-oil-pump-up-date?t=135265\\
+https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/161897-which-oil-pump-buell-26357-02b-or-xl-2007-26204-91a?t=1738158
 ====== 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. \\
 Colder oil is thicker and more resistant to flow. Hotter oil is thinner less resistant to flow. \\
 ====== 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://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/163867-cam-cover-removal#post3491821)) \\ Then you have an instant hydraulic seal to help the oil pump suck oil from the hose.
     * 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://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/196980-vapor-lock-on-77-and-later-oil-pumps#post4303198)) \\ Then you can force feed oil to the pump and on to the engine using this technique. \\
-====== 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 "2" stamped next to casting #\\
-... also has a "T" stamped into opposite return cavity\\
-- 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://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/43858-evo-sportster-engine-oil-pump-up-date?t=135265\\
-https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/161897-which-oil-pump-buell-26357-02b-or-xl-2007-26204-91a?t=1738158
 ====== Oil Pump Gaskets / Seals ======

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