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techtalk:miscres:miscres50 [2021/08/08 21:10] hippysmack [General Part# Changes] |
techtalk:miscres:miscres50 [2021/10/04 12:58] hippysmack |
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| - | ====== MiscRes: HD Part Numbers Explained ====== | + | ====== MiscRes: HD Part Numbers Explained ====== |
| THE PART NUMBER WILL MOST LIKELY NOT BE STAMPED INTO A PART. \\ | THE PART NUMBER WILL MOST LIKELY NOT BE STAMPED INTO A PART. \\ | ||
| However, some parts do have an actual part number printed on them (some electronics have part numbers inked). \\ | However, some parts do have an actual part number printed on them (some electronics have part numbers inked). \\ | ||
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| ====== General Part# Changes ====== | ====== General Part# Changes ====== | ||
| - | * **Some changes are subtle and may only require a letter added to the part number**. \\ Subtle differences may include color, texture, or construction material changes. \\ But it's not entirely accurate that a (-A) suffix is nothing more than a subtle upgrade or that it will fit your bike. | + | * **Original versus Updated part numbers**. \\ THE PARTS OR PART NUMBERS IN ANY VERSION PARTS CATALOG IS NOT MEANT TO BE TAKEN AS ORIGINAL PARTS OR PART NUMBERS. \\ The catalogs simply list what parts were available for sale or replacement at the time the book was written. \\ Each parts catalog (for public use) has a part number written on it (front cover, left side or sometimes first few pages) and each catalog is dated. \\ Most original parts catalogs will have 5 numbers and a dash code at the end of the part number with 2 numbers and NO letter (i.e. xxxxx-95). \\ The next revision of that parts catalog will be (xxxxx-95A) then (xxxxx-95B) and so on, including a new calendar date (year it was written). \\ As time goes by, original parts are obsoleted and replaced with updated parts. \\ The parts catalogs are also updated to reflect the current changes at that moment in time. \\ Retail stores (online or physical outlets) will usually follow suit and only list the "current" part number. \\ If you have an original parts catalog for your year model and try to order that part, you may very well be told it doesn't exist but "here is the part number they show". \\ And if you want to know the original part number, you have to check the original parts book (one without a letter on the end) to be as sure as possible. \\ [[techtalk:miscres:miscres12|Reference Factory Parts Catalogs]] |
| - | * **Example**: All rigid Evo Sportster rocker boxes will bolt to the heads but some are silver or chromed or blacked. \\ Some of these have different prefix and suffix numbers or a combination of old and new numbers. \\ And some are the same boxes with an extra hole added to them. Slight changes sometimes just get a letter added on the end. \\ [[techtalk:evo:engmech04#rocker_box_part_numbers|Reference Evo Rocker Box Page]] | + | * **Example**: Flywheel assembly (23905-00) is listed in 2000-2003 original version parts catalogs. \\ The 2003 catalog went through a (-A) and a (-B) version. Both the (-03 and -03A) catalogs list the flywheel assembly as (23905-00). \\ However, the (-03B) catalog written in 2018 lists the flywheel assembly as (23905-00A). These two flywheels look worlds apart from each other. \\ And if you didn't originally have the -00 flywheels, you won't know that the -00A wheels were replacement for the originals. |
| - | * **Some changes are due to defects found in certain parts**. \\ These changes may keep the same first 5 numbers and simply change the ending two numbers or add a letter to the end of the existing numbers. \\ Or the entire part number may change. | + | * **Some parts will interchange even though the part number doesn't match your motorcycle**. \\ Subtle differences may include color, texture, or construction material changes. |
| + | * **Example**: All rigid Evo Sportster rocker boxes will bolt to all rigid Evo Sportsters. \\ The color or texture may change (natural, silver, chromed or blackened) but they all have the same function. \\ Some of these have different prefix and suffix numbers or a combination of old and new numbers. \\ And 04-up the lower box is the same as the rigid lower box with extra threaded holes added to mount the plastic breather valve assembly. \\ Slight changes sometimes just get a letter added on the end or an entire new part number. \\ [[techtalk:evo:engmech04#rocker_box_part_numbers|Reference Evo Rocker Box Page]] | ||
| + | * **Some part# changes are due to defects found in certain parts**. \\ These changes may keep the same first 5 numbers and simply change the ending two numbers or add a letter to the end of the existing numbers. \\ Or the entire part number may change. | ||
| * **Example**: Company A makes continuous defective master cylinders. \\ The Moco may have the vendor scrap the old part and place a marking on the new improved part (with a letter added on the dash number). \\ Thus, there will a part number change differentiating (to the MoCo) where this part in their hand was made. \\ And the only change being the part number in the catalog and maybe a casting number/letter/symbol change. \\ Some of these type changes also included colored markings / dots etc. to help the dealerships in selecting the correct parts. \\ Since some of these changes were not external but rather internal (bore sizes for instance). | * **Example**: Company A makes continuous defective master cylinders. \\ The Moco may have the vendor scrap the old part and place a marking on the new improved part (with a letter added on the dash number). \\ Thus, there will a part number change differentiating (to the MoCo) where this part in their hand was made. \\ And the only change being the part number in the catalog and maybe a casting number/letter/symbol change. \\ Some of these type changes also included colored markings / dots etc. to help the dealerships in selecting the correct parts. \\ Since some of these changes were not external but rather internal (bore sizes for instance). | ||
| * **Example 2**: A recall was issued for certain 78-E79 models regarding master cylinders that were fitted at the factory with a .015" over-bore. \\ The master cylinder part number (43306-78) didn't change but ones with the correct bore size were retrofitted to the affected bikes. \\ {{ pdf-bulletin:tsb0736.pdf |Reference TSB 0736 PDF}} \\ Another problem cropped up with the -78 master with a possible tear or crack in the metal between the master cylinder outlet and the fluid reservoir. \\ A new version master was issued for L79 models (45011-77) \\ {{ pdf-bulletin:tsb0747.pdf |Reference TSB 0747 PDF}} | * **Example 2**: A recall was issued for certain 78-E79 models regarding master cylinders that were fitted at the factory with a .015" over-bore. \\ The master cylinder part number (43306-78) didn't change but ones with the correct bore size were retrofitted to the affected bikes. \\ {{ pdf-bulletin:tsb0736.pdf |Reference TSB 0736 PDF}} \\ Another problem cropped up with the -78 master with a possible tear or crack in the metal between the master cylinder outlet and the fluid reservoir. \\ A new version master was issued for L79 models (45011-77) \\ {{ pdf-bulletin:tsb0747.pdf |Reference TSB 0747 PDF}} | ||
