372-4119 Crown Gear for Cat M315F, M317F, M318F Wheeled Excavators

   The 372-4119 crown gear is a large bevel gear located within the front and rear axle differentials. Manufactured from high-quality, heat-treated alloy steel, it is engineered to handle the high torque output of Cat engines while maintaining smooth engagement at roading speeds. Its tooth profile is designed to reduce impact and stress during heavy transitions, which is vital for the longevity of the axle when moving from stationary digging to high-speed transport.

The SPARKLING MACHINERY NEW 372-4119 Gear-Crown Photo:

Why Choose the SPARKLING 372-4119 Gear-Crown?

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •    - Optimized Power Transfer: Precisely machined teeth minimize friction and vibration, ensuring maximum traction in varying terrain.

                                                              •    - Superior Hardness: Induction-hardened surfaces prevent pitting and chipping under the extreme loads typical of 15–20 ton excavators.

                                                              •    - F-Series Specialized: Specifically tailored for the high-speed travel capabilities of the M315F through M318F models.

                                                              •    - OEM Specification: Designed to exact tolerances for a direct drop-in fit during differential overhauls, ensuring the correct gear mesh with the pinion.

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                                          • Compatible Cat Wheeled Excavator Models

                                            This gear-crown is a primary component for the following Caterpillar models:

                                            Machine Model	Category	Engine Model
                                            M315F	Wheeled Excavator	Cat C4.4 ACERT
                                            M317F	Wheeled Excavator	Cat C4.4 ACERT
                                            M318F	Wheeled Excavator	Cat C7.1 ACERT
                                            MH3022	Material Handler	Cat C7.1 ACERT

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Q&A Section

Q1: Is it necessary to replace the crown gear and pinion as a set?

A: Yes. In heavy equipment axles, the crown gear and pinion are typically lapped together at the factory to ensure a perfect wear pattern. Replacing only the 372-4119 crown gear while keeping an old pinion can result in rapid wear, excessive noise, and eventual axle failure.

Q2: What is the weight of the 372-4119 crown gear?

A: The standard 372-4119 gear weighs approximately 6.7 kg (14.8 lbs).

Q3: How do I know if my crown gear is damaged?

A: Look for "whining" or "humming" noises that change pitch with machine speed, or "clunking" during direction changes. During an oil change, inspect the magnetic drain plug; large metal fragments (rather than fine metallic dust) usually indicate that teeth are beginning to chip.

About SPARKLING MACHINERY:
   - Founded in 2013, SPARKLING focuses on high-quality excavator parts across hydraulics, undercarriage, engines and electrical systems. We prioritize stability, precision and continuous service, offering worldwide distribution, tailored solutions and strict QC to help customers reduce cost and increase uptime.

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