Case Dozer Engine Flywheel Ring Gear parts list
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480E, 480E LL, 480F, 480F LL, 580K, 580M, 580SE, 580SL Series II, 590SL Series II, 590SM, 584E, 585E, 586E, W11B, W14C, 550, 650, 450C, 455C, 650K, 750K, 1840, 1845C, 40XT, 60XT, 70XT, 75XT, 85XT, 90XT, 95XT |
Flywheel Ring Gear (159 Teeth) |
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J901774 |
$48.00
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580K Phase III, 580SK, 580L, 580SL, 590 Turbo, 590SL, 580M Ser I, 58SM Ser I, 590SM Ser I, 570LXT, 570MXT Ser I, 550E, 550G, 550H, 650, 650G, 650H, 750H, 585G, 586G, 588G, LV80, U80 |
Flywheel with Ring Gear (159 Teeth) |
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J934937 |
$114.00
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650K, 750K, 850D, 855D, 850K, 1150E, 1155E, 1150G, 1150H, 1550, 680L, 780C, 780D, 688, 888, 1088, 9010, 880D, 9010B, 9020, 9020B, 9030, 9030B, 9040, 9040B, 9045B, CX130, CX160, CX210, CX240, CX290, 1085B, 1085C, 1086B, 1187C, W14B, W14C, W36, 621, 62 |
Flywheel Ring Gear (127-Teeth) |
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J905427 |
$74.00
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Flywheels and flywheel ring gears for Case crawler dozers, providing the toothed engagement surface the starter drive meshes with to crank the engine. Available as complete flywheel assemblies with ring gear installed and as replacement ring gears for Cummins-powered machines.
Fits Models At A Glance
- 550 Series: 550, 550E, 550G, 550H
- 650 Series: 650, 650G, 650H, 650K, 750K, 750H
- 800 Series: 850D, 855D, 850K, 880D
- 1150 Series: 1150E, 1155E, 1150G, 1150H
Key Notes
- Application: Provides starter engagement teeth and engine flywheel mass
- Configuration: Complete flywheel with ring gear or ring gear only
- Engine Fit: Includes Cummins-powered dozer applications
- Condition: New and used options across multiple generations
Why Choose Broken Tractor
- ✅ Two US warehouses for fast shipping
- ✅ Verified fitment across Case dozer models
- ✅ Knowledgeable staff for parts lookup help
Frequently Asked Questions
Do I need a complete flywheel or just the ring gear for my Case dozer?
It depends on the condition of your existing flywheel. If the flywheel itself is worn, cracked, or damaged, a complete flywheel with ring gear installed like SKU J934937 is the better choice, while a good flywheel with only chipped or worn starter teeth can be repaired with a replacement ring gear such as SKU J901774 or J905427. Inspect the flywheel friction surface and mounting before deciding.
Which flywheel ring gear fits a Case 650K or 750K dozer?
Both SKU J901774 and SKU J905427 list the 650K and 750K in their fitment. Broken Tractor carries new and used options across multiple Case dozer generations, so match the part number to your machine or confirm fitment with our parts team before ordering.
What flywheel fits Case 550 series dozers with a Cummins engine?
The Case Flywheel with Ring Gear for Cummins Engines, SKU J934937, lists the 550E, 550G, and 550H among its applications. It provides both the starter engagement teeth and the engine flywheel mass in one complete assembly.
Does a Case dozer flywheel ring gear fit 850D, 855D, and 1150 series machines?
Yes, SKU J905427 lists the 850D, 855D, 850K, 880D, and the 1150E, 1155E, 1150G, and 1150H in its fitment. Since coverage varies by model and generation, confirm the part number matches your dozer before ordering.
What are the symptoms of a worn flywheel ring gear on a Case dozer?
A worn ring gear often shows up as grinding, clicking, or the starter failing to engage when you turn the key, caused by chipped or missing teeth where the starter drive meshes. If the engine cranks intermittently or the starter spins without turning the engine, inspect the ring gear teeth. Broken Tractor offers replacement ring gears and complete flywheel assemblies for these repairs.
