Differences

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--- techtalk:ih:oil03g [2024/01/01 18:58] – hippysmack
+++ techtalk:ih:oil03g [2024/09/26 20:39] (current) – [Idler Shaft Removal] hippysmack
@@ Line 7: / Line 7: @@
 ====== Leaking Around Oil Pressure Switch Connection======
+The threading for the pressure switch nipple is not a tapered pipe thread. ((needspeed of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/200460-replacement-oil-pump-year-74)) \\
+It's a 15/32"-24. An oddball size, but that's what it is. \\
+Cracked pumps are actually common. It's easy to over tighten the switch fitting. \\
+You're tightening a steel fitting that has a less than 1/2" thread into aluminum with a large 1" wrench. \\
+It's not the thread that seals the oil, it's the flat surface of the pump body against the flat surface of the fitting that does that. \\
+It only needs to be snug.
 If you have a leak from the oil pressure switch nipple area, 99% of the time it is a cracked body. ((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/175074-66-xlch-oil-pump-concerns/page2?t=1878331&page=2)) \\
 Pull the 1" hex nut and look for a crack on the flat face of the body at 6:00. \\
@@ Line 18: / Line 25: @@
 But it can also be coming in from the clearances of the gears as well as from the shaft seal between the feed and return gears. \\
-==== Testing the oil pump for leaks ====
+===== Testing the oil pump for leaks =====
 You could apply oil via the oil tank to the inlet nipple on an installed pump and observe if oil is leaking through the check into the discharge hole to the engine. \\
 There is no reason to take anything but the front fitting of the pump off. \\
@@ Line 38: / Line 45: @@
 ===== Check Ball Seat Repair =====
 When it comes to a 'fix' for a leaky check ball; ((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/168986-oil-pump-check-fixes/page2?t=1813185&page=2)) \\
 On the human side: \\
@@ Line 82: / Line 88: @@
 Basically you are reconditioning the seat where the ball sits so it creates a good seal around the ball. \\
-The tool on the left is a homemade check ball lapping tool used to lap the seat where the check ball sits in the oil pump (57-76). ((Toolmaker of the XLFORUM http://xlforum.net/forums/showthread.php?t=499487&highlight=check+ball+lapping+tool)) \\
+The tool on the left is a homemade check ball lapping tool used to lap the seat where the check ball sits in the oil pump (57-76). ((Toolmaker of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/72481-i-m-sick-and-tired-of-wet-sumping?t=499487&highlight=check+ball+lapping+tool)) \\
 It's made with a tool steel shank and a 3/8" carbide ball tip on the end. \\
 The pocket for the ball to sit was cut with a 3/8" ball end mill then a few drops of Loctite 404 to keep it there. \\
-This is used as a traditional lapping tool would be. But it's not the best idea to use lapping compound in there. ((Hopper of the XLFORUM http://xlforum.net/forums/showthread.php?t=1013445)) \\
+This is used as a traditional lapping tool would be. But it's not the best idea to use lapping compound in there. ((Hopper of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/109149-oil-pump-check-ball-seating?t=1013445)) \\
 Particles of the very hard lapping compound will become embedded in the soft aluminum and stay there to grind up the ball in service. \\
 Not to mention they can then come loose and circulate through your bearings. \\
 |{{:techtalk:ref:tools:homemade_check_ball_lapping_tool_by_toolmaker.jpg?direct&300|}}|
-|  Homemade check ball lapping tool ((photo by Toolmaker of the XLFORUM http://xlforum.net/forums/showthread.php?t=499487&highlight=check+ball+lapping+tool))  |
+|  Homemade check ball lapping tool ((photo by Toolmaker of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/72481-i-m-sick-and-tired-of-wet-sumping?t=499487&highlight=check+ball+lapping+tool))  |
 **The burnishing method**: \\
-The tool below is a check-ball seat burnishing set. ((DaWind of the XLFORUM http://xlforum.net/forums/showthread.php?t=1013445&page=2)) \\
+The tool below is a check-ball seat burnishing set. ((DaWind of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/109149-oil-pump-check-ball-seating/page2?t=1013445&page=2)) \\
 The idea is to turn the ball into the seat several times, thereby smoothing it to a very fine finish. \\
 It works quite well with these old check valve seats, but you can and do use quite a bit of force with the cast iron for a good result. \\
@@ Line 106: / Line 112: @@
 |{{:techtalk:ref:tools:oil_pump_check_ball_lap_by_dawind.jpg?direct&300|}}|
-|  Check-ball seat burnishing set ((photo by DaWind of the XLFORUM http://xlforum.net/forums/showthread.php?t=1013445&page=2))  |
+|  Check-ball seat burnishing set ((photo by DaWind of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/109149-oil-pump-check-ball-seating/page2?t=1013445&page=2))  |
 **Centering the ball to the seat**: \\
 This was an attempt at keeping the ball centered, with a machined bolt. The very early oil pump's had a pin attached to the ball. \\
-The information below is an extension of this video by bustert [[https://www.youtube.com/watch?v=3cSkppNr6qo&feature=youtu.be|Youtube video on the check ball and wet sumping]] ((video by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?t=1813185)) \\
+The information below is an extension of this video by bustert [[https://www.youtube.com/watch?v=3cSkppNr6qo&feature=youtu.be|Youtube video on the check ball and wet sumping]] ((video by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/168986-oil-pump-check-fixes?t=1813185)) \\
 The spring and really does not home in on the ball, putting side loading on it and therefore not putting full force of the spring directly on top of the seat. \\
-{{:techtalk:ih:oil:check_ball_seat_repair_2_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?t=1813185)) {{:techtalk:ih:oil:check_ball_seat_repair_3_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?t=1813185)) \\
+{{:techtalk:ih:oil:check_ball_seat_repair_2_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/168986-oil-pump-check-fixes?t=1813185)) {{:techtalk:ih:oil:check_ball_seat_repair_3_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/168986-oil-pump-check-fixes?t=1813185)) \\
 The second pic below is the homemade cup to fit into the hole. \\
@@ Line 120: / Line 126: @@
 The extension is 1/32" to 1/16" above the opening. \\
-{{:techtalk:ih:oil:check_ball_seat_repair_1_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?t=1813185)) {{:techtalk:ih:oil:check_ball_seat_repair_4_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?t=1813185)) {{:techtalk:ih:oil:oil_pump_check_ball_fix_4_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?t=1813185)) \\
+{{:techtalk:ih:oil:check_ball_seat_repair_1_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/168986-oil-pump-check-fixes?t=1813185)) {{:techtalk:ih:oil:check_ball_seat_repair_4_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/168986-oil-pump-check-fixes?t=1813185)) {{:techtalk:ih:oil:oil_pump_check_ball_fix_4_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/168986-oil-pump-check-fixes?t=1813185)) \\
 **Cutting a spring seat in the check ball**: \\
@@ Line 129: / Line 135: @@
 Since the ball is basically captured, the seat sides should conform to each other in short order. \\
-{{:techtalk:ih:oil:oil_pump_check_ball_fix_1_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?t=1347614)) {{:techtalk:ih:oil:oil_pump_check_ball_fix_2_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?t=1347614)) {{:techtalk:ih:oil:oil_pump_check_ball_fix_3_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?t=1347614)) \\
+{{:techtalk:ih:oil:oil_pump_check_ball_fix_1_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/129161-while-waiting-on-the-paint-to-dry-and-we-thought-it-was-the-ballcheck?t=1347614)) {{:techtalk:ih:oil:oil_pump_check_ball_fix_2_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/129161-while-waiting-on-the-paint-to-dry-and-we-thought-it-was-the-ballcheck?t=1347614)) {{:techtalk:ih:oil:oil_pump_check_ball_fix_3_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/129161-while-waiting-on-the-paint-to-dry-and-we-thought-it-was-the-ballcheck?t=1347614)) \\
 **Spring pressure**: \\
-The stock 1974 sportster spring has a collapse rate of 2.5 pounds. The difference between the cup hole of .220" and the original pump hole of .312" is .092". ((bustert of the XLFORUM http://xlforum.net/forums/showthread.php?t=1813185&page=2)) \\
+The stock 1974 sportster spring has a collapse rate of 2.5 pounds. The difference between the cup hole of .220" and the original pump hole of .312" is .092". ((bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/168986-oil-pump-check-fixes/page2?t=1813185&page=2)) \\
 Now that sounds like a lot. \\
 But run the sizes at a given psi through an orifice flow calculator and you will see there isn’t that much difference, especially at lower pressures. \\
@@ Line 150: / Line 156: @@
 Now if you have a crappy high clearance pump with a lot of slip, the pump needs replacing. \\
+===== Breather Gear Shaft Mod =====
-===== Shaft Seal Repair =====
+The leaking check ball is the most popular theory out there. ((XLFREAK of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/129161-while-waiting-on-the-paint-to-dry-and-we-thought-it-was-the-ballcheck?t=1347614)) \\
-The leaking check ball is the most popular theory out there. ((XLFREAK of the XLFORUM http://xlforum.net/forums/showthread.php?t=1347614)) \\
 However, the check ball can be perfectly good and the bike will still wet sump. \\
 The oil can go right up the pump shaft directly into the cam box. \\
@@ Line 207: / Line 212: @@
 Below are some ideas for fixing a leaky shaft seal. \\
-==== By bustert ====
+==== By bustert ====
 Normally, you'd use precision equipment for this. However, below shows how you can do the job with common home tools. \\
 The cost of this project would be $4.00 U.S. for the bushing and whatever you can find a milling bit for. \\
@@ Line 234: / Line 239: @@
 These plates with extension can be made from regular steel and tubing. \\
-{{:techtalk:ih:oil:oil_pump_mod_1_by_bustert.jpg?direct&250|}} ((photo by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?p=5614383#post5614383)) \\
+{{:techtalk:ih:oil:oil_pump_mod_1_by_bustert.jpg?direct&250|}} ((photo by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/191819-took-up-the-challenge#post5614383)) \\
-{{:techtalk:ih:oil:oil_pump_mod_2_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?p=5614383#post5614383)) {{:techtalk:ih:oil:oil_pump_mod_3_by_bustert.jpg?direct&250|}} ((photo by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?p=5614383#post5614383)) {{:techtalk:ih:oil:oil_pump_mod_4_by_bustert.jpg?direct&250|}} ((photo by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?p=5614383#post5614383)) \\
+{{:techtalk:ih:oil:oil_pump_mod_2_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/191819-took-up-the-challenge#post5614383)) {{:techtalk:ih:oil:oil_pump_mod_3_by_bustert.jpg?direct&250|}} ((photo by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/191819-took-up-the-challenge#post5614383)) {{:techtalk:ih:oil:oil_pump_mod_4_by_bustert.jpg?direct&250|}} ((photo by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/191819-took-up-the-challenge#post5614383)) \\
-{{:techtalk:ih:oil:oil_pump_mod_5_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?p=5614383#post5614383)) {{:techtalk:ih:oil:oil_pump_mod_6_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?p=5614383#post5614383)) {{:techtalk:ih:oil:oil_pump_mod_7_by_bustert.jpg?direct&250|}} ((photo by bustert of the XLFORUM http://xlforum.net/forums/showthread.php?p=5614383#post5614383)) \\
+{{:techtalk:ih:oil:oil_pump_mod_5_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/191819-took-up-the-challenge#post5614383)) {{:techtalk:ih:oil:oil_pump_mod_6_by_bustert.jpg?direct&300|}} ((photo by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/191819-took-up-the-challenge#post5614383)) {{:techtalk:ih:oil:oil_pump_mod_7_by_bustert.jpg?direct&250|}} ((photo by bustert of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/191819-took-up-the-challenge#post5614383)) \\
-==== By Ferrous Head ====
+==== By Ferrous Head ====
 The pump already has an oil seal in the body of the pump. \\
 This seal stops oil from leaking past the shaft on the scavenge side and into the feed side gears. \\
@@ Line 267: / Line 272: @@
 Click on a pic to enlarge. \\
-{{:techtalk:ih:oil:oil_pump_fix_2_by_ferrous_head.jpg?direct&300|}} ((drawing by Ferrous Head of the XLFORUM http://xlforum.net/forums/showthread.php?t=2074153))
+{{:techtalk:ih:oil:oil_pump_fix_2_by_ferrous_head.jpg?direct&300|}} ((drawing by Ferrous Head of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/197506-wet-sump-ifo-fix-and-tools?t=2074153))
-{{:techtalk:ih:oil:oil_pump_fix_1_by_ferrous_head.jpg?direct&300|}} ((photo by Ferrous Head of the XLFORUM http://xlforum.net/forums/showthread.php?t=2074153)) \\
+{{:techtalk:ih:oil:oil_pump_fix_1_by_ferrous_head.jpg?direct&300|}} ((photo by Ferrous Head of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/197506-wet-sump-ifo-fix-and-tools?t=2074153)) \\
 Here are pics of the tools (made from mild steel) that were made for installation. \\
@@ Line 277: / Line 282: @@
 Also below is the tool to install the oil seal. Not really necessary but it makes the whole job faster and easier to do. \\
-{{:techtalk:ih:oil:oil_pump_fix_3_by_ferrous_head.jpg?direct&300|}} ((photo by Ferrous Head of the XLFORUM http://xlforum.net/forums/showthread.php?t=2074153)) {{:techtalk:ih:oil:oil_pump_fix_4_by_ferrous_head.jpg?direct&300|}} ((photo by Ferrous Head of the XLFORUM http://xlforum.net/forums/showthread.php?t=2074153)) {{:techtalk:ih:oil:oil_pump_fix_5_by_ferrous_head.jpg?direct&300|}} ((photo by Ferrous Head of the XLFORUM http://xlforum.net/forums/showthread.php?t=2074153)) \\
+{{:techtalk:ih:oil:oil_pump_fix_3_by_ferrous_head.jpg?direct&300|}} ((photo by Ferrous Head of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/197506-wet-sump-ifo-fix-and-tools?t=2074153)) {{:techtalk:ih:oil:oil_pump_fix_4_by_ferrous_head.jpg?direct&300|}} ((photo by Ferrous Head of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/197506-wet-sump-ifo-fix-and-tools?t=2074153)) {{:techtalk:ih:oil:oil_pump_fix_5_by_ferrous_head.jpg?direct&300|}} ((photo by Ferrous Head of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/197506-wet-sump-ifo-fix-and-tools?t=2074153)) \\
 ==== By needspeed ====
 When the pump is together there is a 3/16" space between the bottom of the breather sleeve and the top cover. \\
 Enough room for a 1/8" thick insert that holds the seal and is tight to the I.D. of the cover tube. \\
@@ Line 287: / Line 291: @@
 This was made from aluminum on a lathe. \\
-{{:techtalk:ih:oil:oil_pump_mod_1_by_needspeed.jpg?direct&300|}} ((drawing by needspeed of the XLFORUM http://xlforum.net/forums/showthread.php?p=5614923#post5614923)) \\
+{{:techtalk:ih:oil:oil_pump_mod_1_by_needspeed.jpg?direct&300|}} ((drawing by needspeed of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/191819-took-up-the-challenge#post4147031)) \\
+====== Pump Body Damage ======
+-1976 oil pumps cannot be removed/installed without either removing the engine from the frame or at least leaning the engine over in frame. \\
+This makes questionable imperfections more to a higher degree of scrutiny than 77-up gerotor pumps that don't require engine uprooting. \\
+Below is a compilation of just a few oil pumps with various gear well damage. \\
+{{:techtalk:ih:oil:1952-1976_sportster_oil_pump_gear_wall_damage_compilation_by_hippysmack.jpg?direct&400|}}
+====== Roll Pin Damage/Removal ======
+Generally you have 3 lines of action depending on what you're up against. ((Dr Dick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/127032-getting-this-78-back-to-the-way-it-should-be/page30#post2932584)) \\
+  - Squeeze exposed od of pin so it gets smaller and releases the press fit in the hole.
+  - Make a "fishhook" tool with an eccentric lip that you can slide thru the center of the pin. \\ Then rotate 180° once the ecentric lip passes the blind end of the pin. \\ Put shank of tool in a vice and tap on part. PIA, but do-able in garage. Doesn't molest part.
+  - The most extreme but the most effecient and most often the only option. \\ Get a drill bit that fits thru the center hole of the busted pin. \\ Drill clear thru parent part with this bit. Flip part over to get the far end of this thru the hole. \\ Sometimes you can get a drift in this new small hole and catch pin. Tap the pin out. \\ If you can't catch the pin with the drift, from far side enlarge small hole with bit bigger than 1st but smaller than actuall pin hole od. \\ Fit drift thru this hole and tap pin out. Original hole area remains uneffected. New pin will fit normal.
+====== Idler Shaft Removal ======
+If the idler shaft is damaged, you can remove it by applying heat (150°F) to the pump body and the shaft should fall out. \\
+Heat the pump body to (150°F) to install idler gear shaft. Shaft may not protrude above either oil pump body face. ((1972-2003 XR-750 Service Manual)) \\
 \\

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