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159 Teeth Ring Gear Cummins Engine Part 3901774 J901774 Aluminum Material

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159 Teeth Ring Gear Cummins Engine Part 3901774 J901774 Aluminum Material

Brand Name : KOVAX

Model Number : 159T

Place of Origin : CHINA

MOQ : 1PCS

Price : Negotiable

Payment Terms : T/T, D/P, Western Union, MoneyGram

Supply Ability : 300PCS

Delivery Time : 5-8 working days

Packaging Details : 20*20*20

Part No : 3901774 / J901774

Model : 159T

Part Name : Flywheel Ring Gear

Technics : Push

Weight : 2.5kg

Color : Black

Material : Aluminum

Cummins Engine : Cummins 4b Engine

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3901774 Flywheel Ring Gear Ring 159 - Teeth Excavator Part J901774


Specifiion

TypeFlywheel Ring Gear
Model159T
Part No3901774 / J901774
Standard ComponentStandard Component
TechnicsCasting
Warranty6 month
ConditionNew
Driving System PartsWheel
PackageNeutral packing
Steering System PartsSteering Gear



Description

A freewheel assembly is also widely used on engine starters as a kind of protective device. Starter motors usually need to spin at 3,000 RPM to get the engine to turn over. When the key is held in the start position for any amount of time after the engine has started, the starter can not spin fast enough to keep up with the flywheel. Because of the extreme gear ratio between starter gear and flywheel (about 15 or 20:1) it would spin the starter armature at dangerously high speeds, causing an explosion when the centripetal force acting on the copper coils wound in the armature can no longer resist the outward force acting on them. In starters without the freewheel or overrun clutch this would be a major problem because, with the flywheel spinning at about 1,000 RPM at idle, the starter, if engaged with the flywheel, would be forced to spin between 15,000 and 20,000 RPM. Once the engine has turned over and is running, the overrun clutch releases the starter from the flywheel and prevents the gears from re-meshing (as in an accidental turning of the ignition key) while the engine is running. A freewheel clutch is now used in many motorcycles with an electric starter motor. It is used as a replacement for the Bendix drive used on most auto starters because it reduces the electrical needs of the starting system.


Purpose
1.The flywheel for most automatic transmissions/transaxles is simply a stamped-steel disc with a ring gear loed at the outer edge for engagement with the starter’s pinion gear. With this type of flywheel, the torque converter has no ring gear. Some cars use a more modest flywheel known as a flexplate, which is all that’s needed because the torque converter itself has a ring gear loed on its outer edge.
2.The flywheel, or flexplate, mounts to the engine's crankshaft and also serves as a mounting loion for the torque converter. Consequently, the flywheel or flexplate transmits engine torque to the torque converter housing. The flywheel’s ring gear also serves as an engagement point for the pinion of the starter motor when cranking the engine. Because of the lightweight design of the flywheel or flexplate, it does not help to smooth out power pulses from the engine like the flywheel does on a car with a manual transmission. On cars with automatic transmissions, the torque converter provides this function.
3.The flywheel/flexplate does not require regular maintenance. Sometimes, the ring gear may suffer damage from improper starter engagement or alignment. If this is the case, the ring gear or flywheel may need replacement.



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159 Teeth Ring Gear Cummins Engine Part 3901774 J901774 Aluminum Material159 Teeth Ring Gear Cummins Engine Part 3901774 J901774 Aluminum Material























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