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techtalk:ih:susp03 [2017/11/01 00:45] hippysmack [Removing the Swingarm] |
techtalk:ih:susp03 [2017/11/12 19:12] hippysmack [Swingarm Pivot Bolts, Bearings and Related Parts List] |
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| ====== Swingarm (rear fork) Info ====== | ====== Swingarm (rear fork) Info ====== | ||
| + | A number of 1972 Sportsters were produced from November 1, 1971 to March 29, 1972 without the (3 position) stake operation performed on the rear left side fork bearing lock nut (47514-52). Bearing pre-load (which should be kept at 1-2 pounds) is controlled by the left and right (47515-52) bearing lock nuts. The affected VINs were (3A or 4A) 18748H2 to 33040H2. This safety defect prompted a recall of the affected bikes with the dealer being required to remove the rear fork for inspection and stake any of them that were done previously at a rate of $7 reimbursed labor and handling. ((HD Service Bulletin #636 dated April 27, 1972 pg OC-403)) | ||
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| * There are 4 variants of the long swingarm | * There are 4 variants of the long swingarm | ||
| - 67-72 xlh 70-72 xlch | - 67-72 xlh 70-72 xlch | ||
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| ==== Assembling the Swingarm ==== | ==== Assembling the Swingarm ==== | ||
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| * For the swing arm its pretty easy when you know how it works. The pivot bolt when tightened presses the inner bearing and race,bearing spacer, and dust shield onto both sides of the frame and the actual adjustment is done by tightening bearing locknut on the right side till you have the desired preload once the preload is set then comes the lock-ring so the right bearing locknut cant turn. ((OutlawTexan67 http://xlforum.net/vbportal/forums/showthread.php?t=185355&page=2)) | * For the swing arm its pretty easy when you know how it works. The pivot bolt when tightened presses the inner bearing and race,bearing spacer, and dust shield onto both sides of the frame and the actual adjustment is done by tightening bearing locknut on the right side till you have the desired preload once the preload is set then comes the lock-ring so the right bearing locknut cant turn. ((OutlawTexan67 http://xlforum.net/vbportal/forums/showthread.php?t=185355&page=2)) | ||
| * When you install the locknut do not stake it as advised in the FSM. A little [not a lot] of blue locktite is all that it needs, and whoever needs to remove it one day will be thankful. ((IronMick http://xlforum.net/vbportal/forums/showthread.php?t=1835679&highlight=swingarm)) | * When you install the locknut do not stake it as advised in the FSM. A little [not a lot] of blue locktite is all that it needs, and whoever needs to remove it one day will be thankful. ((IronMick http://xlforum.net/vbportal/forums/showthread.php?t=1835679&highlight=swingarm)) | ||
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| + | * Factory recommendation from bulletin in 1972: ((HD Service Bulletin #636 (included instruction sheet) dated April 2, 1972)) | ||
| + | * Reinstall rear fork (be sure the left side nut registers in the crankcase slot). Weigh with spring scale before tightening the right side bearing race nut. | ||
| + | * Tighten nut until you get 1-2 pounds of bearing preload. Install the bearing nut lock and screw. | ||
| === Guide to Swingarm Bearing Replacement === | === Guide to Swingarm Bearing Replacement === | ||
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| |54-E74 KH/XL/XLH/XLCH|Bearing Kit 47550-74| 82-85 XL/XLS/XLX|(Right) (2) 47082-81 \\ Timken: Race LM11710, Bearing LM11749 ((GA_Ironhead http://xlforum.net/vbportal/forums/showthread.php?t=709634&page=5))| | |54-E74 KH/XL/XLH/XLCH|Bearing Kit 47550-74| 82-85 XL/XLS/XLX|(Right) (2) 47082-81 \\ Timken: Race LM11710, Bearing LM11749 ((GA_Ironhead http://xlforum.net/vbportal/forums/showthread.php?t=709634&page=5))| | ||
| |L74-81 XLH/XLCH/XLS|(2) 47521-74 \\ Timken: Race 11520, Bearing 11590 ((GA_Ironhead http://xlforum.net/vbportal/forums/showthread.php?t=709634&page=5))| | |L74-81 XLH/XLCH/XLS|(2) 47521-74 \\ Timken: Race 11520, Bearing 11590 ((GA_Ironhead http://xlforum.net/vbportal/forums/showthread.php?t=709634&page=5))| | ||
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| + | * Bearing Kit (47550-74) (replaced the single bearing part # 47521-52) contains 2 bearings which are 0.100" narrower than the original bearing dims used in Sportsters up to 1974. The kit also contains a new pivot bolt nut (47512-74), bearing locknuts (L - 47514-74, R - 47515-74) and an outer spacer (47521-74) - clearanced for the new bearings. ((HD Service Bulletin #688 dated May 12, 1974) | ||
