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7K4770 CAT Gear Fd
4.7
(Site rating)Description for 7K4770 Planetary Gear
▶Specification for 7K4770 Planetary Gear
▶Exact Fit Guarantee for 7K4770 Planetary Gear
▶| Dimensions | 5.12x5.12x18.90 |
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Everything fine, thank you. The only thing with which I had a problem in your Software, is that when I have more than 10 different items on the list, I can't scroll to the first ones. But besides that, I am very happy in going on with buying your parts.
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Fast communication, and very Helpful!
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Quality Caterpillar parts
Very fast delivery and respons from Propel Parts
This is my second time that I bought something from it, first time delivery time was in one week from US to Serbia -
Great place for Cat parts!
Had some shipping difficulties, but everything was made right. Parts were perfect and an excellent price. Thanks! -
Excelente atencion y refacciones de calidad
Frequently Asked Questions
What is the function of the 7K4770 Gear FD?
The 7K4770 Gear FD is a final drive pinion/gear used in the final drive or powertrain system of Caterpillar equipment. It meshes with the ring gear inside the final drive assembly to help reduce speed and increase torque delivered to the wheels or tracks, enabling movement and traction under heavy load.
How do I install the 7K4770 Gear FD?
Here’s a general guide for proper installation:
- Park the machine on level ground, shut off the engine, and safely support it.
- Relieve pressure in the final drive system if necessary and remove access covers.
- Disconnect the old gear from the final drive housing, noting the orientation and fitment.
- Carefully remove the worn gear and clean the bore and mating surfaces.
- Install the new 7K4770 Gear FD, ensuring proper alignment with the mating gear and mounting surface.
- Reassemble the final drive, reinstall covers, refill fluid if needed, and test operation at low speed for smooth engagement.
Which machines use the 7K4770 Gear FD?
The 7K4770 Gear FD is compatible with Caterpillar track-type machines and loaders where this part number is specified, including models like D4D, 941, 941B, 951B, and 951C in final drive or drivetrain applications. Check your manual or reach out to Propel Parts for help verifying fitment.
Does the 7K4770 Gear FD meet performance expectations?
Yes, the 7K4770 Gear FD is manufactured to meet or exceed OEM quality and durability standards. Aftermarket versions are produced and tested to closely match the fit, strength, and performance of the original Caterpillar part, helping ensure dependable operation in demanding earthmoving environments.
How often should a gear like the 7K4770 be inspected or replaced?
Final drive gears should be inspected during routine drivetrain or final drive maintenance, especially if you notice unusual noise, vibration, or performance changes. Worn or chipped gear teeth can accelerate wear on the mating ring gear and bearings, so replace the gear if significant wear is found.
What are common signs that the 7K4770 Gear FD needs replacement?
Typical indicators include:
- Unusual noise or grinding from the final drive area
- Vibration or rough rotation under load
- Visible wear or missing teeth on the gear
- Metal particles in final drive fluid
Easy Returns
Our refund policy is simple. We offer a 30-day, no-hassle return policy, and we make every effort to provide the best service and highest-quality parts possible. If you’re not fully satisfied with your purchase, you may return it within 30 days for a refund. Full details are available on our Returns Policy page.
Warranty
Buy with confidence. All parts from Propel Parts are covered against material or manufacturer defects for 12 months from the original invoice date. We stand behind every part we sell, so you can count on reliable performance and dependable support. Full details are available on our Warranty Policy page.
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