Differences

This shows you the differences between two versions of the page.

--- techtalk:ih:oil03d [2018/12/04 02:24]
hippysmack [Check Valve]
+++ techtalk:ih:oil03d [2024/01/01 18:34] (current)
hippysmack
@@ Line 1: / Line 1: @@
 [[:techtalk:menu|{{  :techtalk:gototechnicalmenu.jpg|}}]]
 ====== IH: Oiling & Lubrication - Sub-03D ======
-====== 77-85 Oil Pump Parts Lists and Upgrades with Pics ======
+====== 77-85 Oil Pump Parts Lists and Upgrades ======
-Originated from an article by DirtyCory of the XLFORUM ((http://xlforum.net/forums/showthread.php?t=2071153)) ((Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?t=2071153&page=2)) \\
+Originated from an article by DirtyCory of the XLFORUM ((https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/194881-let-s-study-the-77-85-oil-pump-parts-and-changes-and-when?t=2071153)) ((Hippysmack of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/194881-let-s-study-the-77-85-oil-pump-parts-and-changes-and-when/page2?t=2071153&page=2)) \\
 See the [[techtalk:ih:oil03#oil_pump|77-85 Oil Pump]] section of the Sportsterpedia for pics, dims and more information. \\
 Also on this page below; \\
-[[techtalk:ih:oil03d#parts_list_and_upgrades_per_oil_pump_assembly|Parts List and Upgrades per Oil Pump Assembly]] \\
 [[techtalk:ih:oil03d#parts_lists_per_catalogs|Parts Lists per Catalogs]] \\
 ====== Total Oil Pump Assemblies ======
@@ Line 53: / Line 53: @@
 So, they fit together as a unit. \\
 Either plate matched with it's correct seal will work on 77-85 pumps. \\
-====== Individual Parts and Pics ======
-====== Oil Pump Body and Cover ======
-==== For 77-81 pump assembly ====
-**E77**: \\
-Special "1600" oil pump stamped with an "O": \\
-(26484-75) Oil pump body \\
-(26486-75) Pump cover \\
-**Late 77-81**: \\
-(26484-75) Oil pump body \\
-(26486-75) Pump cover \\
-==== For 82-E83 pump assembly ====
-(26484-83) Oil pump body \\
-(26486-83) Pump cover \\
-==== For L83-85 pump assembly ====
-(26484-75A) Oil pump body \\
-(26486-75A) Pump cover \\
-====== Gearshaft ======
-See also [[techtalk:ih:oil03b#gear_shaft_dims|Gear Shaft Dims]]. \\
-The gear shaft (26488-75) was used from 77-90. \\
-The dims and teeth pitch are all the same on the gear. \\
-However, there are variations of the exact length of the shaft. \\
-|{{:techtalk:ih:oil:77-85_oil_pump_gear_shaft_2.0_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_gear_shaft_comparison_1_by_dirtycory.jpg?direct&300|}}|
-|  All have 20 teeth gears ((photo by Hippysmack))  |Longer shaft (L), Shorter shaft (R) with hash marks \\ on the top. Reason for the hash marks presently \\ unknown. ((photo by DirtyCory of the XLFORUM http://xlforum.net/forums/showthread.php?t=2071153&page=8))|
-|{{:techtalk:ih:oil:77-85_oil_pump_gear_shaft_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_gear_shaft_comparison_2_by_dirtycory.jpg?direct&300|}}|
-|  This shows where the wear occurs. ((photo by Hippysmack))  |  Lengths slightly different. ((photo by DirtyCory of the XLFORUM http://xlforum.net/forums/showthread.php?t=2071153&page=8))  |
-====== Inner Plate ======
-See also; \\
-[[techtalk:ih:oil03b#inner_plate|Inner Plate Dims]] \\
-The inner plate (26463-77) is the top plate (with the pump installed). \\
-The return gerotors sit on this plate. \\
-It was used in all 77-90 oil pumps. \\
-|{{:techtalk:ih:oil:77-85_oil_pump_inner_separator_plate_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_inner_separator_plate_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-85_oil_pump_inner_separator_plate_3_by_hippysmack.jpg?direct&300|}}|
-Inner separator plate installed position (pump upside down). \\
-|{{:techtalk:ih:oil:77-85_inner_plate_installed_position_by_hippysmack.jpg?direct&300|}}|
-====== Outer Plate ======
-See also; \\
-[[techtalk:ih:oil03b#outer_plate|Outer Plate Dims]] \\
-The outer plate is the bottom plate (with the pump installed).
-The feed gerotors sit under this plate. \\
-  * (26493-75) was used in 77-82 oil pumps.
-  * (26493-75A) was an upgrade for the E83 pump assembly. \\ It also was used in the re-designed L83-85 assemblies as well as all 86-90 oil pumps.
-Either will fit 77-90 oil pumps with their respective seals. \\
-|{{:techtalk:ih:oil:outer_plates_-_as_annotated_-_by_dirtycory.jpg?direct&500|}}|
-|  Outer plate comparison ((photo by DirtyCory of the XLFORUM, annotated by Hippysmack http://xlforum.net/forums/showthread.php?t=2071153))  |
-===== (26493-75) =====
--82 outer plate I.D. 0.518" \\
-|{{:techtalk:ih:oil:77-82_oil_pump_outer_separator_plate_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-82_oil_pump_outer_separator_plate_2_by_hippysmack.jpg?direct&300|}}|
-|  77-82 oil pump outer separator plate top view  ((photo by Hippysmack))  |  77-82 oil pump outer separator plate bottom view  ((photo by Hippysmack))  |
-===== (26493-75A) =====
--90 outer plate I.D. 0.683" \\
-===== Outer Plate Seal =====
-====== Gerotors ======
-See also; \\
-[[techtalk:ih:oil03b#gerotor_dims|Gerotor Dims]] \\
-    * There were 2 different sets of gerotors used in Sportster oil pumps from 77-85.
-      * 77-E83; Return set (26491-75), Feed set (26492-75). \\ Discontinued for production models by November of 1982. ((HD Service Bulletin #M860 dated November 12, 1982 pg 2)) \\ Sold for 77-E83 oil pumps through 1984.
-      * L83-85; Return set (26491-83), Feed set (26492-83).
-    * The -78B parts book lists the original gerotors. \\ (even though that catalog was written in 1989 after the design change).
-The outside gear in each 77-E83 gerotor set was chamfered. \\
-The outside gear in each L83-85 gerotor set was straight cut. \\
-|{{:techtalk:ih:oil:77-e83_outside_gerotor_edge_by_dirtycory.jpg?direct&200|}}|{{:techtalk:ih:oil:l83-85_outside_gerotor_edge_by_dirtycory.jpg?direct&200|}}|
-|  77-E83 gerotor outside edge ((photo by DirtyCory of the XLFORUM  http://xlforum.net/forums/showthread.php?t=2071153&page=3))  |  L83-85 gerotor outside edge ((photo by DirtyCory of the XLFORUM  http://xlforum.net/forums/showthread.php?t=2071153&page=3))  |
-===== 77-E83 - return (26491-75), feed (26492-75) =====
-|{{:techtalk:ih:oil:77-e83_oil_pump_gerotors_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:77-e83_oil_pump_gerotors_2_by_hippysmack.jpg?direct&300|}}|
-===== Late 1983 oil pump assembly design modification =====
-  * The late 83 oil pump assembly (26197-83) gerotor gears are fabricated without the chamfered top and bottom on the outer diameters as was in the 77-E1983 gerotors. \\ This new assembly will retrofit to 77-E83 engines ((HD Service Bulletin #M860 dated November 12, 1982 pg 2)) ((HD Service Bulletin #M-892 dated June 22, 1984)) \\ The new gerotors will retrofit to the 82 model pump body and cover. ((79-85 HD XL models Parts Catalog -85A pg 21))
-  * Late 1983 pump bodies and covers were also under-cut or relieved to accommodate for clearances with the new gerotors.
-  * The 77-E83 chamfered gerotors have a (.020" x 45° chamfer or .020") radius and the same radius is designed into their respective oil pump body / cover.
-  * The Late 83 pump body and cover has a (.010" max. radius) undercut for clearance designed into them.
-  * These modifications limit interchangeability and affect the installation of repair parts:
-    * Either early style or late style gerotor gears may be used with late style (under-cut) oil pump bodies and covers.
-    * Only early style chamfered gerotor gears may be used with early style oil pump bodies and covers \\ (Use of  late style gerotor gears in early style oil pump bodies and covers could cause the oil pump to bind up and possible pump failure).
-===== L83-85 - return (26491-83), feed (26492-83) =====
-====== Check Valve ======
-See also; \\
-[[techtalk:ih:oil03b#check_valve_dims|Check Valve Dims]] \\
-[[techtalk:ih:oil01#oil_pump_check_valve|More on how the check valve works]] \\
-    * The oil pump check valve had 2 different part numbers.
-      * The original was (26435-76) in 1977.
-    * The part number was upgrade (26435-76A)  for L77-78 models ((1954-1977 HD Sportster XLH/XLCH-1000 Parts Catalog Supplement (99451-77A) )) ((1954-1978 HD Sportster XLH/XLCH-1000 Parts Catalog Supplement (99451-78) )) ((1954-1977 HD Sportster XLH/XLCH-1000 Parts Catalog pg 23 (99451-78A) ))
-    * Speculation could say...,
-      * The original check was for the special "1600" pump (discontinued L77).
-      * And the upgraded check was for installation in a newer, non publicized, pump casting not cataloged.
-    * Either way, the upgraded check valve was used through 1985 on IHs.
-|{{:techtalk:ih:oil:26435-76a_check_valve_-cropped-_by_dirtycory.jpg?direct&200|}}|
-|  26435-76A check valve ((photo by DirtyCory of the XLFORUM http://xlforum.net/forums/showthread.php?t=2071153&page=2))  |
-====== (26435-76A) L77-85 ======
-Made by Circle Seal. \\
-Part # P106-376.\\
-Patent #3626977. \\
-It has an arrow pointing up with FC to the bottom left of the arrow. \\
-==== In search of a comparable check valve ====
-**The closest on the Circle Seal website** is a [[http://www.circle-seal.com/products/check_valves/c2900/index.html|2900 series cartridge check valve]]. \\
-Click on the 2900 series in the catalog section to the left on the their site.
-In the Products-Engineering-Terminology PDF; \\
-<blockquote>Flow capability (Cv=0.55).
-Flow capability indication commonly accepted by the valve industry.
-The literal definition is that a component with a Cv of one (1); \\
-Can flow one (1) gallon of water with a ΔP of one (1) PSI. \\
-The calculated results from Cv equations must be considered reasonable approximations only.</blockquote>
-**Link to the Circle Valve site with comparable dims and specs**: \\
-[[https://catalog.circlevalve.com/item/check-valves/c2900-series-cartridge-check-valve-0-to-3000-psig/cs-c2949b-4q]] \\
-This one has a back-up O-ring on the valve. \\
-That link came from this XLF thread: \\
-[[http://xlforum.net/forums/showthread.php?t=1979566&highlight=gerotor&page=2]]
-====== Oil Pressure Switch ======
-See also; \\
-[[techtalk:ref:trouble07|Tesing the Oil Pressure Switch]] \\
-[[techtalk:ih:oil01#oil_pressure_switch|More on How the Ironhead Oil Pressure Switch Works]] \\
-(26554-77) Oil pressure switch (L-77 to 90). \\
-On 77-85 models, it was mounted at the oil pump and later mounted to the filter pad on 86-90 models. \\
-The oil pressure switch was listed in the -77A parts supplement catalog. \\
-However, it was listed as a L77 addition in the -78 parts supplement. \\
-The circumstance of this switch being a late addition is unclear. \\
-However, there was a wiring harness upgrade in 78 and an oil pressure gauge available for 77-78 models. \\
-Double nuts (7638) for the oil pressure switch were also a late addition part #. \\
-(retainer for the wire to the oil light) \\
-|{{:techtalk:ih:oil:oil_pressure_switch_0_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:oil_pressure_switch_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ih:oil:oil_pressure_switch_3_by_hippysmack.jpg?direct&300|}}|
-|  Oil pressure switch (26554-77)
 ====== Parts List and Upgrades per Oil Pump Assembly ======
@@ Line 283: / Line 118: @@
     * New pump assembly was equipped on 82 models.
     * 77-81 oil pump (26204-75), as upgraded, still sold for 81 and prior models (due to the fittings being different in the new assembly).
 ==== E83 Upgrades / Changes ====
@@ Line 327: / Line 161: @@
     * Date references:
       * 99451-84 parts catalog: (copyright August-83).
-      * [[parts:partsplus-01b|TSB M-860]] dated 11-12-1982 (E83 season).
+      * [[techtalk:miscres:miscres05|TSB M-860]] dated 11-12-1982 (E83 season).
         * The MoCo announces the gerotor gears were then being fabricated without the chamfered top and bottom on the outer diameters.
-      * [[parts:partsplus-01b|TSB M-892]] dated 6-22-1984.
+      * [[techtalk:miscres:miscres05|TSB M-892]] dated 6-22-1984.
         * The MoCo announces the retirement of the 77-E83 oil pump assembly. \\
@@ Line 341: / Line 175: @@
     * L83 pump (26197-83) and it's new parts now sold as an assembly only for 82 and up replacement.
     * All parts were still being sold for the 82-E83 and 77-81 pumps.
 ==== 85 Upgrades / Changes ====
@@ Line 413: / Line 246: @@
 ==== 77 Version ====
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&800|}}||
 |Part #|Description|
 |(1794)|Oil pump mounting bolt (1/4"x20x2/12" Allen head) - (4)|
@@ Line 446: / Line 279: @@
 ==== 78-79 Version ====
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&800|}}||
 |Part #|Description|
 |(1794)|Oil pump mounting bolt (1/4"x20x2/12" Allen head) - (4)|
@@ Line 478: / Line 311: @@
 ==== 80-81 Version ====
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&800|}}||
 |Part #|Description|
 |(1794)|Oil pump mounting bolt (1/4"x20x2/12" Allen head) - (4)|
@@ Line 513: / Line 346: @@
 The assembly has a 45° feed fitting and a 45° return fitting. \\
 This coincides with the oil tank upgrade in 82.
 ==== 82 Version ====
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&800|}}||
 |Part #|Description|
 |(<wrap hi>3478</wrap>)|Oil pump mounting bolt (1/4"x20x2/12" Allen head) - (4)|
@@ Line 545: / Line 380: @@
 ===== (26204-82A) E83 =====
 Production assembly for E83 models. \\
 The assembly has a 45° feed fitting and a 45° return fitting. \\
 ==== E83 Version ====
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&800|}}||
 |Part #|Description|
 |(3478)|Oil pump mounting bolt (1/4"x20x2/12" Allen head) - (4)|
@@ Line 576: / Line 411: @@
 |(26554-77)|Oil pressure switch|
 |(63540-62)|45° feed and return fittings (3/8" hose nipple)|
 ====== L83-85 Oil Pump Assembly ======
@@ Line 583: / Line 417: @@
 The assembly has a 90° feed fitting and a 90° return fitting. \\
 This coincides with the oil tank upgrade in 84 (or possibly L83). \\
 ==== L83-85 Version ====
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&800|}}||
 |Part #|Description|
 |(3478)|Oil pump mounting bolt (1/4"x20x2/12" Allen head) - (4)|
@@ Line 613: / Line 447: @@
 |(26497-75)|Gear shaft retaining ring|
 |(26554-77)|Oil pressure switch|
 ====== Parts Lists per Catalogs ======
@@ Line 660: / Line 493: @@
 ===== 1977 Oil Pump =====
 **Parts list from the -77A and -78 parts catalog supplements**: ((1954-1977 HD Sportster XLH/XLCH-1000 Parts Catalog Supplement (99451-77A) )) ((1954-1978 HD Sportster XLH/XLCH-1000 Parts Catalog Supplement (99451-78) )) \\
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&800|}}||||
 |Part #|Description|Listed for Year(s)|Factory Installed On Year(s)|
 |(1794)|Oil pump mounting bolt (1/4"x20x2/12" Allen head) - (4)|  77  |  77-81  |
@@ Line 698: / Line 530: @@
 ===== 1978 Oil Pump =====
 **Parts list from the -78 parts catalog supplement**: ((1954-1978 HD Sportster XLH/XLCH-1000 Parts Catalog Supplement (99451-78) )) \\
 Part # changes in the table below are highlighted. \\
 (although HD has changed parts without changing the part numbers) \\
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&800|}}||||
 |Part #|Description|Listed for Year(s)|Factory Installed On Year(s)|
 |(1794)|Oil pump mounting bolt (1/4"x20x2/12" Allen head) - (4)|  77-78  |  77-81  |
@@ Line 737: / Line 569: @@
 ===== 1979 Oil Pump =====
 **Parts list from the -79 parts catalog**: ((1979 HD Sportster XLH/XLCH-1000 Parts Catalog pg 15 (99451-79) )) \\
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&800|}}||||
 |Part #|Description|Listed for Year(s)|Factory Installed On Year(s)|
 |(1794)|Oil pump mounting bolt (1/4"x20x2/12" Allen head) - (4)|  79  |  77-81  |
@@ Line 775: / Line 605: @@
 ===== 1980 Oil Pump =====
 **Parts list from the -80 parts catalog**: ((1979 & 1980 HD Sportster XLH/XLCH/XLS-1000 Parts Catalog pg 15 (99451-80) )) \\
 Part # changes in the table below are highlighted. \\
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&800|}}||||
 |Part #|Description|Listed for Year(s)|Factory Installed On Year(s)|
 |(1794)|Oil pump mounting bolt (1/4"x20x2/12" Allen head) - (4)|  79-80  |  77-81  |
@@ Line 812: / Line 642: @@
 ===== 1981 Oil Pump =====
   * Notes:
     * There are no changes noted in the -81 parts catalog.
 **Parts list from the -81 parts catalog**: ((1979 to 1981 HD Sportster XLH/XLCH/XLS-1000 Parts Catalog pg 17 (99451-81) )) \\
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&800|}}||||
 |Part #|Description|Listed for Year(s)|Factory Installed On Year(s)|
 |(1794)|Oil pump mounting bolt (1/4"x20x2/12" Allen head) - (4)|  79-81  |  77-81  |
@@ Line 852: / Line 681: @@
 ===== 1982 Oil Pump =====
 **Parts list from the -82 parts catalog**: ((1979 to 1982 HD XL Models Parts Catalog pg 19 (99451-82) )) \\
 Part # changes in the table below are highlighted. \\
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&800|}}||||
 |Part #|Description|Listed for Year(s)|Factory Installed On Year(s)|
 |(3478)|Oil pump mounting bolt (1/4"x20x2/12" Allen head) - (4)|  79-82  |  82-85  |
@@ Line 888: / Line 717: @@
 |(63540-62)|45° Feed fitting (3/8" hose nipple)|  79-82  |  77-E83  |
 |:::|45° Return fitting|  82  |  82-E83  |
 ===== 1983 Oil Pump =====
@@ Line 896: / Line 723: @@
 Part # changes in the table below are highlighted. \\
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&800|}}||||
 |Part #|Description|Listed for Year(s)|Factory Installed On Year(s)|
 |(3478)|Oil pump mounting bolt (1/4"x20x2/12" Allen head) - (4)|  79-83  |  82-85  |
@@ Line 932: / Line 760: @@
 |(63540-62)|45° Feed fitting (3/8" hose nipple)|  79-83  |  77-E83  |
 |:::|45° Return fitting|  82-83  |  82-E83  |
 ===== 1984 Oil Pump =====
 **Parts list from the -84 parts catalog**: ((1979 to 1984 HD XL Models Parts Catalog pg 21 (99451-84) )) \\
 Part # changes in the table below are highlighted. \\
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&800|}}||||
 |Part #|Description|Listed for Year(s)|Factory Installed On Year(s)|
 |(3478)|Oil pump mounting bolt (1/4"x20x2/12" Allen head) - (4)|  79-84  |  82-85  |
@@ Line 975: / Line 801: @@
 |(63540-62)|45° Feed fitting (3/8" hose nipple)|  79-E83  |  77-E83   |
 |:::|45° Return fitting|:::|  82-E83  |
-===== 1985 Oil Pump =====
+===== 1985 Oil Pump =====
 **Parts list from the -85 parts catalog**: ((1979 to 1985 HD XL Models Parts Catalog pg 21 (99451-85) )) \\
 Part # changes in the table below are highlighted. \\
+^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&800|}}||||
 |Part #|Description|Listed for Year(s)|Factory Installed On Year(s)|
 |(3478)|Oil pump mounting bolt (1/4"x20x2/12" Allen head) - (4)|  79-85  |  82-85  |
@@ Line 1012: / Line 839: @@
 |(63540-62)|45° Feed fitting (3/8" hose nipple)|  79-E83  |  77-E83   |
 |:::|45° Return fitting|:::|  82-E83  |

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