5399022 Engine Flywheel Assembly Starter Ring Gear Flywheel For JAC B4.0 Diesel Engine Inertia Power Storage Parts
Product Details
| OEM: | 5399022 | Vehicle Model: | B4.0 |
|---|---|---|---|
| Specifications: | 138c | ||
| Highlight |
5399022 Engine Flywheel Assembly,JAC Truck Engine Flywheel Assembly,5399022 |
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Product Description
5399022 Flywheel Assembly is a heavy-duty inertia storage component designed for JAC B4.0 diesel engine. It accumulates rotational thrust energy from combustion cycles to stabilize crankshaft rotation and delivers continuous torque to clutch and gearbox. The integrated ring gear meshes accurately with starter pinion gear to drive crank rotation for engine ignition. This aftermarket replacement flywheel resolves rough idle vibration, fluctuating power delivery, ring gear tooth breakage and heat-induced warping of clutch friction surface caused by long-time heavy-load operation, surface scoring and fatigue damage of old flywheels. Reliable inertia balance protects transmission components and reduces clutch slip failure risk for medium-light trucks used for long-distance freight and frequent variable-load delivery tasks.
Product Advantages Adopts high-grade ductile cast iron raw material and undergoes strict dynamic balance calibration to minimize vibration across full speed range. The starter ring gear receives professional surface quenching treatment for outstanding impact resistance and wear resistance. Precision planar grinding on friction face guarantees uniform compression force from pressure plate. Every flywheel is tested for runout, tooth integrity and dimension tolerance before delivery, OEM hole layout and positioning boss for direct bolt-on replacement.
| Item | Parameter |
|---|---|
| Part Number | 5399022 |
| Product Name | Engine Flywheel Assembly |
| Matching Engine | JAC B4.0 |
| Material | Ductile Cast Iron + Hardened Alloy Ring Gear |
| Feature | Inertia Energy Storage, Starter Meshing, Dynamic Balanced, Anti-Wear Friction Surface |
| MOQ | Negotiable |
| Application | Engine Energy Storage, Starter Engagement and Clutch Torque Transfer Assembly |
Applicable Models Fit for JAC commercial trucks equipped with B4.0 diesel engine, widely used for long-haul cargo transportation and heavy-load regional distribution.
FAQ
Q1: What abnormal phenomena indicate the flywheel assembly needs replacement?
A1: Dark burnt marks on friction plane, harsh metallic grinding noise during cranking and severe idle shaking.
Q2: What risk will excessive material removal when resurfacing bring?
A2: It will break factory dynamic balance and weaken structural strength, triggering flywheel fracture under heavy load.
Q3: What supporting spare parts should be replaced synchronously?
A3: Clutch disc, pressure plate and release bearing are advised to be renewed together as one complete clutch kit.
Product Highlights
5399022 Flywheel Assembly is a heavy-duty inertia storage component designed for JAC B4.0 diesel engine. It accumulates rotational thrust energy from combustion cycles to stabilize crankshaft rotation and delivers continuous torque to clutch and gearbox. The integrated ring gear meshes accurately ...
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