instruction manual harley rear wheel assembly diagram

Overview of Harley Rear Wheel Assembly

Harley rear wheel assembly diagrams detail axle, bearings, brake disc and spacer layout․ They guide proper part placement, torque values, and alignment checks for reliable performance․ All parts․․․․

1․1 Purpose and Key Components

The purpose of the Harley rear wheel assembly diagram is to provide a clear, component‑by‑component visual reference that ensures each part is installed in the correct orientation and sequence․ Key components highlighted in the diagram include the rear axle, 9052 roller bearings, 7987 hex‑slotted nuts, 6516HW washers, 5756 spacers, 3730A hex‑cap screws, 510 spring clip, 40217‑79A final‑drive sprocket, 40939‑86A brake disc, 40999‑87 valve stems, and the overall 16‑inch laced wheel assembly․ The diagram also shows the placement of the 7987 nuts and 6516HW washers on the axle, the alignment of the 9052 bearings with the hub, and the correct positioning of the 40217‑79A sprocket relative to the rear wheel flange․ By following the diagram, technicians can verify that the spring clip is seated, the spacers are evenly distributed, and the brake disc is mounted flush against the hub, thereby preventing binding and ensuring optimal braking performance․ This diagram also lists torque settings for each bolt, ensuring proper clamping and preventing over‑tightening that could damage components and maintain safety for riders daily․!!

1․2 Importance of Proper Assembly

Proper assembly of Harley rear wheel ensures safety, performance, and longevity․ Incorrect torque or misaligned components cause brake binding, premature wear, or catastrophic failure․ The exploded diagram shows correct placement of 9052 roller bearings, 7987 nuts, 6516HW washers, and 3730A screws․ Following it prevents axle wobble, reduces vibration, and maintains braking efficiency․ A misaligned sprocket can shift chain tension, leading to chain wear or loss of power․ Proper spacing with 5756 spacers keeps the hub centered, avoiding uneven tire wear․ Correct spring clip installation ensures the rear suspension functions, preventing sag or over‑compression․ Adhering to torque specs preserves the integrity of fasteners, avoiding loosening under load․ Overall, meticulous assembly extends component life, reduces maintenance costs, and guarantees rider safety․ This meticulous process protects the bike’s aesthetic integrity, ensuring flawless chrome finish and smooth ride for riders․

Required Tools and Safety Precautions

Use a torque wrench, socket set, jack, and wheel chocks․ Wear gloves, eye protection, and ensure the bike is on a stable surface․ Follow the diagram to avoid over‑torque and misalignment for safety!!!!

2․1 Essential Tools for Assembly

Before you begin, gather a calibrated torque wrench (0–80 ft‑lb range), a full set of sockets (10 mm to 25 mm), and matching ratchets․ A floor jack or hydraulic lift, along with sturdy wheel chocks, keeps the motorcycle stationary․ Use a caliper spring compressor to relieve brake pad pressure, and a pry bar or flat‑head screwdriver for removing the rear hub․ Allen wrenches (8 mm, 10 mm, 12 mm) are essential for mounting the axle and securing the brake disc․ A torque‑setting device for the axle nut, a bead‑sealer or anti‑seize compound, and a clean rag for wiping brake dust complete the kit․ Always double‑check torque values against the exploded diagram to avoid over‑tightening or under‑tightening, which can lead to wheel wobble or brake failure․ Proper tool selection ensures a smooth, safe assembly process․ A digital torque wrench paired with a calibrated torque angle gauge guarantees accurate torque and cam angle settings, ensuring the rear brake caliper operates smoothly and extends component life forever!

2․2 Safety Measures and Best Practices

When disassembling a Harley rear wheel, secure the bike on a flat surface and use wheel chocks to prevent accidental movement․ Lift the rear end with a hydraulic jack or lift, ensuring the axle is supported by a jack stand or a dedicated rear‑wheel support․ Wear safety glasses and gloves to protect against debris and edges․ Before removing the axle, check for residual brake fluid; use a brake bleeder kit to avoid spills․ Keep a clean, organized workspace: store small parts in containers to prevent loss․ Follow the exploded diagram’s torque sequence: tighten axle nut, wheel bolts, then brake caliper bolts․ Use a calibrated torque wrench and verify setting with a torque angle gauge․ Inspect the brake disc for warping; replace if necessary․ After reassembly, perform a test spin to confirm smooth rotation and brake engagement check and verify․ Document deviations from the diagram for future reference․ Finally, update part numbers and torque values to aid future servicingand check cam․ Ensure bolts are torqued to spec and perform a test․

Component Identification and Part Numbers

Use exploded diagrams to match part numbers: wheel 40939-86A, brake disc 40939-86A, axle 3730A, spacer 5756, washer 6516HW, nut 7987, bearing 9052, sprocket 40217-79A․ Verify parts before use test․

3․1 Wheel and Axle Parts

Wheel and axle components are identified through exploded drawings that list each part by its OEM number․ The 16‑inch laced rear wheel includes rim, spokes, hub and brake disc․ The axle shaft, a 3‑inch steel rod, passes through the hub and is secured with a flange nut and washer․ Spacers—usually 5‑mm thick—are placed between the axle and the hub to maintain clearance․ Bearings, such as the 9052 roller bearing, sit between the axle and the hub, allowing smooth rotation․ The final drive sprocket (40217‑79A) attaches to the rear wheel and engages the chain․ A spring clip (510) keeps the axle in place, while a hex cap screw (3730A) secures wheel to frame․

Additionally, the axle flange must align with the frame mounting points, and the axle nut should be tightened to the specified torque of 100 ft‑lb․ The wheel’s spoke tension is adjusted to 12․5 psi, and the rim’s inner diameter must match the hub’s outer diameter․ All components should be inspected for wear, and any damaged parts replaced before reassembly․ Thanks!!!․

3․2 Brake System Components

The rear brake assembly is composed of a 12‑inch disc (40939‑86A), a caliper bracket, a 5‑piece valve stem set (40999‑87), and a 10‑piece roller bearing (9052)․ The disc mounts onto the hub using a 10‑piece washer (6516HW) and a thick‑slotted hex nut (7987)․ The caliper bracket attaches to the frame with a 5‑piece spacer and a 10‑piece hex cap screw (3730A)․ The valve stems connect to the caliper pistons and are secured with a 5‑piece spacer․ Proper torque for the disc bolts is 60 ft‑lb, while the caliper bracket bolts require 45 ft‑lb․ The roller bearing must be seated with a 10‑mm clearance to avoid binding․ When installing, ensure the disc is centered on the hub and the caliper bracket is aligned with the frame mounting points․ After assembly, bleed the system to remove air and test for smooth operation․ This diagram helps technicians verify each part’s location and torque settings for reliable braking performance․ All bolts must be torqued to spec to ensure safetyand correctly

Step‑by‑Step Assembly Process

Clean the hub, slide the axle through bearings, grease rollers, align spacers, secure axle with hex cap screws, then torque all fasteners to spec Check alignment and ensure no play before torquenow․

4․1 Preparing the Rear Wheel for Installation

Begin by removing the old wheel and inspecting the hub for wear․ Clean the axle housing, bearings, and brake rotor with a solvent to remove grease and debris․ Verify that the axle shaft is straight and free of burrs; replace if damaged․ Apply a thin layer of high‑temperature grease to the bearing races and axle threads․ Check the spacer stack for correct sequence and spacing; replace any worn spacers․ Inspect the brake disc for cracks or excessive wear; if the disc is compromised, install a new one․ Verify that the brake caliper mounting bracket is clean and properly aligned․ Ensure the rear suspension linkages are in good condition and that the swingarm pivot is free of corrosion․ Finally, confirm that the wheel’s spoke pattern matches the hub’s bolt pattern and that all spoke tension is within manufacturer specifications before proceeding to assembly․ Spin the wheel to confirm free rotation and brake engagement before final torque and verify alignment․

4․2 Installing the Axle and Bearings

Insert the axle shaft into the rear hub, ensuring the bearing retainer is seated correctly․ Slide the first bearing onto the shaft, aligning the tapered surfaces․ Use a bearing press or a hammer and a suitable punch to seat the bearing without damaging the race․ Repeat the process for the second bearing, confirming that both bearings rotate freely․ Apply a thin layer of high‑temperature grease to the bearing surfaces before final seating․ Once both bearings are in place, position the spacer stack onto the axle, checking that each spacer aligns with the corresponding mounting point․ Tighten the axle nut to the manufacturer’s torque specification, using a calibrated torque wrench․ After securing the axle, rotate the wheel to verify smooth operation and ensure that the bearings do not bind or produce noise․ Finally, inspect the axle alignment visually and with a dial indicator, making any necessary adjustments before proceeding to brake assembly․ All steps must be repeated for each wheel during maintenance cycles․

Brake Caliper and Disc Installation

Mount the disc onto the hub, aligning mounting holes and securing with bolts․ Attach the caliper bracket, adjust piston travel, test for clearance, and verify brake function before riding․ and check align․

5․1 Mounting the Brake Disc

Begin by removing the existing brake disc and ensuring the hub surface is clean and free of burrs․ Apply a thin layer of anti‑seize compound to the hub flange to prevent corrosion․ Align the disc’s mounting holes with the hub’s pre‑drilled slots, making sure the disc is centered to avoid wobble․ Insert the mounting bolts through the disc and into the hub, then secure the washers and lock nuts․ Tighten the bolts to the manufacturer’s torque specification—typically 70–80 lb‑ft for most Harley models—using a calibrated torque wrench․ After the bolts are set, rotate the wheel by hand to confirm smooth, even rotation without binding․ Finally, inspect the disc for any signs of damage or warping before proceeding to caliper installation․ Ensure the disc is free of debris and that the brake pads align correctly with the rotor․ A properly seated disc will reduce noise and improve braking performance during high‑speed riding․ After installation, perform a brake test at low speed to verify proper engagement and release․!

5․2 Adjusting the Caliper Bracket

Position the caliper bracket on the rear hub flange, aligning the mounting holes with the hub’s pre‑drilled slots․ Slide the bracket into place, ensuring the brake pads sit flush against the disc rim․ Use a torque wrench to tighten the bracket bolts to the specified torque—usually 25–30 lb‑ft for most Harley models․ After securing the bolts, check the pad clearance by gently moving the wheel; the pads should contact the disc without excessive drag․ If the pads are too tight, loosen the bolts slightly and re‑torque to the correct setting․ Verify that the caliper pivot pin is fully seated and that the brake lever feels smooth when engaged․ Finally, perform a low‑speed brake test to confirm that the disc rotates freely and that the caliper bracket does not shift during operation․ Proper bracket adjustment ensures optimal braking performance and extends component life․ to inspsects brake fluid level replace brake line shows corrosion․ Always use a calibrated torque wrench to avoid over‑tightening, which can damage brakes․

Torque Specifications and Final Checks

Use a calibrated torque wrench․ Tighten axle nuts to 35 lb‑ft, wheel bolts to 30 lb‑ft, caliper bolts to 25 lb‑ft․ Verify alignment,checktestbrakes!!

Always use a calibrated torque wrench and follow the manufacturer’s torque sequence: first tighten the axle nut to 35 lb‑ft, then the wheel bolts to 30 lb‑ft in alternating fashion, next the caliper bolts to 25 lb‑ft, and finally the spacer bolts to 20 lb‑ft․ After torquing, rotate the wheel 360 and inspect for binding․ Check that the brake pads are seated properly and the caliper piston is free to move!!!!!!!!

6․2 Verifying Alignment and Smooth Operation

During a test ride, apply the brake lever at speeds to feel for vibration or uneven pull․ A correctly aligned wheel should provide steady braking․ If wobble occurs, re‑center the axle, verify hub flange, and inspect pad wear patterns for mis‑alignment․ After adjustments, re‑torque all fasteners to spec and perform a short run to confirm smooth operation․!!

To double‑check wheel alignment, use a dial indicator or a laser alignment tool to measure runout at the hub flange․ Acceptable runout is typically less than 0․02 in․ If runout exceeds this, replace the axle or adjust the hub flange․ After alignment, re‑torque the axle nut to the specified 35 lb‑ft and re‑check wheel spin․ A smooth, vibration‑free rotation confirms proper assembly․ Finally, perform a short test ride at low speed, gradually increasing to full throttle, and observe brake feel and wheel behavior․ Any hesitation or pulling indicates a remaining mis‑alignment that requires further adjustment․!!!!!!!!

Common Troubleshooting Scenarios

Common issues include stuck brakes, axle misalignment, and worn bearings․ Check for debris, ensure proper torque, inspect brake pads, and verify wheel spin․ Replace worn parts promptly․ Ensure safety․!

7․1 Stuck Brake Issues and Prevention

Stuck brakes on a Harley rear wheel often stem from contaminated brake pads, warped discs, or mis‑aligned calipers․ Inspect the disc for glazing or scoring; replace if the surface is uneven․ Clean the pad faces with isopropyl alcohol and ensure the caliper pistons retract fully․ Verify the spacer stack: a missing or damaged spacer can shift the caliper bracket, causing binding․ Tighten all bolts to the specified torque, but avoid over‑tightening which can deform the bracket․ Use a brake fluid flush kit to remove air and old fluid; stale fluid increases viscosity and can lock the caliper․ Regularly check the brake hose for kinks or leaks, and replace it if the rubber shows signs of cracking․ Apply a thin layer of brake grease on the piston seals to reduce friction․ Finally, perform a test spin after each service: the wheel should rotate freely with no drag․ If the brake still sticks, consider a brake line replacement or a professional caliper rebuild․Check lever feel before use

7․2 Axle Alignment Problems

Axle alignment issues on a Harley rear wheel manifest as uneven tire wear, vibration, and bearing wear․ Common causes include a bent axle shaft, worn wheel bearings, or a missing spacer ring that shifts the hub’s offset․ Inspect the wheel by rotating it and noting the tire contact patch; a lateral shift indicates play․ Use a dial indicator to measure axle runout; values above 0․02–0․04 mm exceed tolerance․ If the axle shaft is bent, straighten it at a machine shop or replace it․ Verify spacer rings are correctly positioned; a missing ring can pull the wheel off‑center, causing misalignment; Check bearing preload by measuring clearance between bearing flanges and the axle; excessive clearance leads to wobble․ Tighten all axle nuts to the specified torque (usually 70–80 Nm) and re‑check alignment․ After realignment, perform a spin test: the wheel should rotate smoothly with no side‑to‑side movement․ This ensures optimal performance and longevity! Regular inspection during routine maintenance will catch alignment drift early, ensuring safe handling and extending component life․

Maintenance Tips and Part Replacement Guide

Regularly inspect wheel bearings, replace worn spacers, and check brake disc wear․ Tighten axle nuts to spec, replace any bent components, and schedule yearly service to ensure longevity․ for all models․!!!

8․1 Regular Inspection Schedule

Monthly: inspect the rear wheel for cracks, corrosion, and ensure the brake disc is level․ Check the axle nut torque with a torque wrench, confirming it matches the manufacturer’s spec․ Inspect the wheel bearings for play; any wobble indicates wear․ Quarterly: remove the wheel and inspect the hub assembly․ Replace worn spacers, washers, springs․ Clean the brake caliper pistons and check for leaks․ Inspect the brake disc for scoring and replace if thickness is below the minimum․ Yearly: perform a disassembly of the rear axle․ Replace all bearings, and bushings․ Re‑torque all fasteners to spec, re‑install the brake disc and caliper, and verify alignment with the rear fender․ After each service, run the bike for a test ride to confirm smooth operation and no abnormal noises․ Keep a log of all inspections and replacements for reference․ This schedule helps prevent brake sticking, and ensures safety and performance on everyso ride for optimal performance and rider confidence daily․

8․2 When to Replace Specific Components

Harley rear wheel components have defined service intervals․ Bearings should be replaced when the wheel shows a ¼‑inch play or a noticeable wobble during a 30‑second spin․ Springs lose elasticity after roughly 12,000 miles; a sagging spring causes the rear tire to sit lower than the fender line․ Spacers and washers that rust or crack must be swapped immediately to avoid hub mis‑alignment․ Brake discs must maintain a minimum thickness of 4․5 mm; any disc thinner than this should be replaced․ Caliper pistons that leak or fail to retract fully indicate a worn seal and need replacement․ Inspect axle nut thread damage or corrosion a damaged nut compromises wheel security now․ Check the hub for wear, a rough bearing surface, and replace if needed․ Always verify that the brake caliper bracket is free of dents; a bent bracket mis‑directs the caliper and causes uneven pad wear․ Inspect the wheel hub for internal wear, such as a rough bearing surface, and replace if necessary