Dedicated Subsystem WorkbenchPlatform Gen: 2007–2016

2015 Harley Davidson Twin Cam 96 / 103 (Dyna / Softail / Touring) Cylinder Compression & Leakdown Diagnostic Engine

Factory compression specs for 2015 Harley Davidson Twin Cam 96 / 103 (Dyna / Softail / Touring): standard pressure 165 - 185 PSI (1137 - 1275 kPa), service limit 140 PSI, dry vs wet test diagnostics and acoustic leak stethoscope.

Technical PassportOEM VERIFIED

Engine

1690cc

Cooling

Air/Oil-Cooled

Final Drive

Belt Drive

Engine Oil

3.80 L (4.00 US qt)

Spark Plug

HD 6R12 / Champion RA8HC / NGK DCPR7E

Front Tire

130/80B17 (Touring) / 100/90-19 (Dyna) / 130/90B16 (Softail)

Gen 2007–2016

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2007 through 2016.

SPECS-TO-CART BUNDLESFactory Direct-Fit Maintenance Bundles Available

1-Click verified Motul engine oil service kits, race filters, spark plugs, and brake fluid pre-measured for this 2015 Harley Davidson Twin Cam 96 / 103 (Dyna / Softail / Touring).

Configure Service Bundles→

Select Model Year:(Active: 2015)
10 Production Years (2007–2016)

2007 2008 2009 2010 2011 2012 2013 2014 2015 2016

Suggested Items4 Verified Workshop Consumables Available for this Job

View Suggested Items ↓

Cylinder Compression & Leakdown Diagnostic Engine

Multi-Cylinder Dry vs. Wet Test Bench, Differential Pressure Regulator & Acoustic Stethoscope Locator

Ratio: 9.6:1Std: 165-185 PSILimit: 140 PSIWhip Adapter: 12 mm × 1.25

Automatic Compression Release (ACR) on 103ci heads / Optional on 96ci

103ci engines utilize ECM-actuated electronic ACR solenoids in the head casting. For true mechanical cylinder compression testing, disconnect ACR wire connectors or readings will register 30-40 PSI lower than actual.

Diagnostic Presets:

Cyl #1 (Front)IN-SPEC

178PSI(1227 kPa)

Cyl #2 (Rear)IN-SPEC

176PSI(1214 kPa)

Cross-Cylinder Variance: Δ 2 PSI (OEM Limit: ≤ 15 PSI)

VARIANCE IN-SPEC

All cylinders demonstrate strong, balanced mechanical sealing. Piston ring packs, cylinder cross-hatch, and valve seats are within factory specification.

Official Workshop Manual Compression Test Protocol

Step 0 of 5 Completed

Step 1: Engine Operating Temperature

Run engine until coolant reaches 60°C - 80°C (140°F - 176°F). Cylinder expansion brings rings and pistons to true operating clearances.

Step 2: Spark Plug Removal & Port Clean

Blow compressed air around spark plug wells to eject grit, then remove all spark plugs. Thread in 12 mm × 1.25 whip adapter hand-tight with fresh O-ring.

Step 3: Wide-Open Throttle (WOT) Lock

Hold throttle grip fully wide open (or lock throttle bodies open) to eliminate intake butterfly vacuum restriction and ensure 100% volumetric cylinder filling.

Step 4: Battery Tender Voltage Stabilization

Connect a 12V shop battery tender or booster. Starter must sustain uninterrupted cranking speed (250 RPM) to build maximum dynamic stroke pressure.

Step 5: Crank 4-6 Compression Strokes

Engage starter until gauge needle ceases rising (typically 4 to 6 strokes). Record maximum peak pressure and compare against the OEM limits above.

Official NHTSA Safety Recalls & Technical Bulletins

0 Open Campaigns (Clean)

U.S. Department of Transportation compliance database (Title 49 U.S.C. Chapter 301).

Verify VIN on NHTSA.gov

No Active Federal Safety Recalls Reported

The U.S. DOT National Highway Traffic Safety Administration (NHTSA) records zero open safety recall campaigns for the 2015 Harley Davidson Twin Cam 96 / 103 (Dyna / Softail / Touring) platform. Always check your individual 17-digit VIN at an authorized dealership or via NHTSA.gov for individual recall completions.

OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

2 Documented Bulletins

Bulletin #M1524M1524: RECALL 0177 - 2019 - 2021 SPORTSTER - HEADLAMP BULB SHIELD

Source: Harley_M1524_Recall0177.pdf

Mandated Torques:Torque: 5.8–6 in-lbs (0.66–0.68 N·m) (Bulb Shield Screw)Torque: 35–44 in-lbs (4–5 N·m) (Bracket to Visor Screws)Torque: 10–16 ft-lbs (13.5–21.6 N·m) (Visor Bracket Screws)

Consumable Specs:Loctite 243 Medium Strength Blue Threadlocker (HD Part # 99642-97)

Genuine Part Numbers:68297-05A9150010799642-97

Fastener Stack ArchitectureExploded View: Headlamp Visor Fastener & Vibration Stack (Bulletin M1524)

3-Stage Torque Map

Select any fastener or shield component to inspect exact torque specifications.

Component InspectorNHTSA Recall 0177 / M1524

Self-Tapping Shield Screw with Blue Loctite 243

Consumable: Loctite 243 (HD # 99642-97)

Factory Torque Specification

5.8–6.0 in-lbs (0.66–0.68 N·m) (CRITICAL LOW TORQUE)

Technical Assembly Note

MUST apply Loctite 243 Blue Threadlocker. Due to reuse of self-tapping screw into stamped bracket, STRICTLY do not exceed 6 in-lbs or threads will strip.

Vibration & Chemical Retention

Loctite 243 Medium Strength Blue Threadlocker (HD Part # 99642-97) mandatory on bulb shield screw to prevent thermal loosening.

Bulletin #Recall0171Part 573 Safety Recall Report 18V-076: ABS Hydraulic Control Unit Flush & Fluid Replacement

Source: Harley_Recall0171_ABS_4574.pdf

Mandated Torques:Torque: 17–22 ft-lbs (23.0–30.0 N·m) (ABS Manifold / Caliper Banjo Bolts)Torque: 35–61 in-lbs (4.0–6.9 N·m) (Brake Caliper Bleeder Screws)

Consumable Specs:Harley-Davidson Platinum Label DOT 4 Brake Fluid

Genuine Part Numbers:41731-01

Explore Other Subsystems for this 2015 Harley Davidson Twin Cam 96 / 103 (Dyna / Softail / Touring)

Jump straight into dedicated factory specifications and interactive workshop diagnostic engines.

← Full Motorcycle Overview

Subsystem Guide/torques

Fastener Torques

Engine drain plug, axle spindles, caliper mounts, triple clamp pinch bolts & thread lubrication derating guide.

Open Dedicated Workbench →

Subsystem Guide/fluids

Fluids & Capacities

Oil: 3.80 L (4.00 US qt) • Coolant: N/A • Brake: DOT 4 Glycol-Based High-Temp (Dry BP ≥ 260°C / Wet BP ≥ 165°C)

Open Dedicated Workbench →

Subsystem Guide/fuses-relays

Fuses & Relays

Main: 50A Maxi-Fuse • Location: N/A

Open Dedicated Workbench →

Subsystem Guide/valves

Valve Clearances

Intake: N/A mm • Exhaust: N/A mm

Open Dedicated Workbench →

Subsystem Guide/fuel-delivery

Fuel Delivery & TB Sync

Idle: N/A • Rail Pressure: N/A • Vacuum: N/A

Open Dedicated Workbench →

Subsystem Guide/electrical

Charging & Battery

Battery: YTX20HL-BS (Dyna/Softail) / YIX30L-BS (Touring) • CCA: 385 • Regulated: 14.2 - 14.8 V DC at 3,000 RPM

Open Dedicated Workbench →

Subsystem Guide/tires

Tires & Gearing

Front: 130/80B17 (Touring) / 100/90-19 (Dyna) / 130/90B16 (Softail) • Rear: 180/65B16 (Touring) / 160/70B17 (Dyna) / 200/55R17 (Fat Boy)

Open Dedicated Workbench →

Subsystem Guide/suspension

Suspension & Sag

Front Travel: 117 mm • Rear Travel: 76 mm

Open Dedicated Workbench →

Subsystem Guide/maintenance

Maintenance Schedule

Oil: Every 5,000 mi (8,000 km) mi • Valves: N/A • Plugs: Every 10,000 mi (16,000 km) mi

Open Dedicated Workbench →

← Return to Full Comprehensive Motorcycle Specification Hub (2015 Harley Davidson Twin Cam 96 / 103 (Dyna / Softail / Touring))

Looking for direct-fit parts for this 2015 Twin Cam 96 / 103 (Dyna / Softail / Touring)?

Browse authentic verified parts, motor oils, filters, brake pads, and tires that fit this exact bike.

Browse Direct-Fit Parts