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IH: Suspension

Swingarm (rear fork) Info

Swingarm

Removing the Swingarm

  • If you can do it without removing the staked nut on the left side is best. It serves to center the swingarm in the frame and you can bung up the threads on that nut really easily. 1)

Installing the Swingarm

  • 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. 2)

Swingarm Parts List

Year ModelSwingarm Part #
1952-1956 All K Models
1957 Sportster
47504-52
replaced by 47504-52A 3) 4)
replaced by 47504-52B 5)
All new versions are retro-fit
1967-1969 XLCH47504-56B 6)
1967-1974 XLH
1970-1974 XLCH
47504-67A 7)
1975-1976 XLH, XLCH47504-75 8)
1977-1978 XL, XLCH47504-76 9)
1979 XL/XLCH/XLS47532-79 (with bearings) 10)
1979 XL/XLCH/XLS47549-79 (without bearings) 11)
1979-1981 XL/XLCH/XLS47532-79A (with bearings) 12)
1979-1981 XLCH
1979-1981 XL/XLS
47473-80 (without bearings) 13)
1982 XL/XLS47532-81 (with bearings) 14) Square Tube 15)
1983-1985 XL/XLS/XLX47532-83 (with bearings) 16) Square Tube 17)
Inner Bearing ShieldPart #Inner Bearing SpacersPart #Outer Bearing Spacer (R)Part#
52-56 K Models
57-81 XL/XLH/XLCH/XLS
(2) 47519-5252-56 K Models
57-81 XL/XLH/XLCH/XLS
(2) 47518-5252-56 K Models
57-E74 XL/XLH/XLCH
47517-52
L74-81 XLH/XLCH/XLS47517-74
Swingarm BearingsPart #Swingarm BearingsPart #
52-56 K Models
57-E74 XL/XLH/XLCH
(2) 47521-52
Timken: Race 17520, Bearing 17580 18)
82-85 XL/XLS/XLX(left) (1) 47083-81
54-E74 KH/XL/XLH/XLCHBearing Kit 47550-74 82-85 XL/XLS/XLX(Right) (2) 47082-81
Timken: Race LM11710, Bearing LM11749 19)
L74-81 XLH/XLCH/XLS(2) 47521-74
Timken: Race 11520, Bearing 11590 20)
Bearing Locknut Lock-plate (R)Part #
52-56 K Models
57-81 XL/XLH/XLCH/XLS
47525-52
(#10)Bearing Retention:
Lock-Plate Screw / Washer / Lockwasher (R)
Part #
52-56 K Models
57 Sportster
1187
52-56 K Models
57-63 XL/XLH/XLCH
(#10 x 3/8“ self tapping) 2657
52-56 K Models
57-59 Sportsters
(#10×13/32”) External tooth shake-proof lockwasher 7220
53-63 K Models
57-63 XL/XLH/XLCH
5/8“ Lockwasher 7072
L72-81 XLH/XLCH/XLS(10-24 x 1/2”) Pozidriv fil head (R) 1198
L72-81 XLH/XLCH/XLS(#10) Lockwasher (R) 7069
54-81 KH/XL/XLH/XLCH/XLS(5/8“) Bearing Lockwasher 7022
Swingarm Pivot Bolt / NutPart #
54-81 KH/XL/XLH/XLCH/XLS47511-52
82-85 XL/XLS/XLX41568-81A
Pivot Bolt NutPart #
52-56 K Models
57-E74 XL/XLH/XLCH
47512-52
L74-81 XLH/XLCH/XLS47512-74
Bearing LocknutPart #
52-56 K Models &
57-E74 XL/XLH/XLCH
47514-52 (Left) 21)
52-56 K Models &
57-E74 Sportster
47515-52 (Right) 22)
L74-81 XLH/XLCH/XLS47514-74 (Left)
L74-81 XLH/XLCH/XLS47515-74 (Right)
Axle AdjusterPart #
54-78 KH/XL/XLH/XLCHAxle Adjuster (2) 39985-52
79-85 XL/XLCH/XLS/XLXAxle Adjuster (2) 41570-77
Axle Adjuster Nuts / WashersPart #
54-78 KH/XL/XLH/XLCHInner Axle Adjuster Nut (2) 7753 (5/16”-24 NF x 17/64“ x 1/2” hex)
54-78 KH/XL/XLH/XLCHOuter Axle Adjuster Nut (2) 7744 (5/16“-24 NF x 3/16” x 1/2“ hex)
79-85 XL/XLCH/XLSWasher, (2) 6324W (5/16” x 11/16“ x 3/32”)
79-85 XL/XLCH/XLSLocknut,(2) 7725 (5/16“x24 x 11/32” x 1/2“ hex)
Fork End CoversPart #
79 XL/XLCH/XLS(2) 47554-78
79-85 XL/XLCH/XLS/XLX(2) 47554-73
Bearing Dust ShieldPart #
82-85 XL/XLS/XLX(2) - (right) 41579-81
Pivot Bolt SpacerPart #
82-85 XL/XLS/XLX(left) 5716
Plastic Bearing PlugPart #
83-85 XLX(Left) 10040
Passenger Footpeg BracketPart #
83-85 XL/XLS (2) 50615-83
83-85 XL/XLS3/8” Lockwasher for Footpeg Bracket (2) 7045
83-85 XL/XLS3/8“x16 2” Knurled 9/16“ Socket Head Screw (2) 855
for Passenger Footpeg Bracket

Swingarm Pics

Click on a pic to enlarge:

1980 Swingarm bolt assembly 23)


3)
Spare Parts Catalog for all Sportster and K Models pg 38 by OSKRG/ www.harleyKmodel.com
4)
HD 1952-1959 Spare Parts Catalog for Sportsters and K Models pg 45
5)
1963 HD Parts Catalog for Sportsters and KH Models 1953-1963 pg 50
6) , 7) , 8) , 9)
1952-1978 HD Parts Catalog pg 111
10) , 11)
1979 HD Sportster Parts Catalog pg 53
12) , 13)
1979-1985 HD Sportster Parts Catalog pg 87
14) , 16)
1979-1985 HD Sportster Parts Catalog pg 89
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