Important

Flat side of retaining ring must be toward the bearing.

Install bearing spacer (5). Press ball bearing (3) against shoulder in hub and tap grease retainer (1) in place.

FX - DISASSEMBLING AND ASSEMBLING 19 INCH WHEEL HUBS 1978 (Figures 2-17, 2-17A)

Remove oil seals (1), spacer (2), and bearing cones (3). Use a bearing puller to remove bearing cups (4). Spacer (5) may now be removed. Brake disc (6 or 6A) is secured to hub (9 or 9A) with 5 bolts and lockwashers (8) or screws (8A).

Clean and inspect all parts, paying particular attention to the wheel hub bearings. If bearings have excessive side play or radial (up and down) play in the wheel hubs, they should be replaced. If ball bearings have been removed from the hubs, carefully examine for visible wear, heat discoloration or damage to inner and outer races. Inspect brake shells or brake disc for scoring, grooving and worn running surfaces. Check spoke flanges for bent or damaged condition. Recommended hub repair is replacement of worn or damaged parts.

Reassembly is basically the reverse of disassembly with the following exceptions: Apply a liberal amount of Harley-Davidson Grease-All to bearing cones (4) before assembly. Press oil seals (1) into hub flush with outer surface. Lubricate lip of oil seal before inserting spacer (2). If brake disc (6 or 6A) and brake disc spacer (7) have been disassembled make sure all mating surfaces are clean and flat before assembly. Apply Harley-Davidson "Stud and Bearing Mount," Part No. 99626-77 to threads and tighten bolts (8) to 35 ft-lbs torque or screws (8A) to 10 ft-lbs torque. When wheel is assembled to motorcycle, bearing end play should be .004 to .018 inch with axle nut tightened to 50 ft-lbs torque. If end play is not correct, substitute a slightly longer or shorter spacer (5) as necessary.

FX - DISASSEMBLING AND ASSEMBLING 19 INCH WHEEL HUBS 1978 (Figures 2-17, 2-17 A)

Remove oil seals (1), spacer (2) and bearing cones (3). Use a standard bearing puller to remove bearing cups (4). Spacer (5) may now be removed. Brake discs (6) are secured to hub (8) with screws (7).

Clean all parts in solvent and inspect for damage or wear. Replace parts as necessary. If bearing cones or cups need replacing, replace as a set. Inspect brake discs for warping, scoring or worn running surfaces. Replace as necessary. On spoked wheels, check spoke flanges for bent or damaged condition.

Figure 2-16. FX - Front Wheel Hub - Exploded View (1973 to 1977)

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