By positioning the rubber boot closer to the transfer case, it remains shielded from the external environment and ensures its effectiveness in retaining grease and excluding contaminants that could compromise the drive shaft's smooth operation.
Here's why the rubber boot typically faces the transfer case:
1. Transfer Case Proximity: The transfer case is generally located closer to the center of the vehicle compared to the axle. Placing the rubber boot closer to the transfer case allows for easier access during periodic inspections and maintenance, making it more convenient for servicing.
2. Reduced Exposure to Hazards: The section of the drive shaft closer to the axle is more likely to come in direct contact with road debris, water, sand, and other contaminants due to its exposed position beneath the vehicle. Protecting the rubber boot by locating it towards the transfer case minimizes its exposure to potential damaging elements.
3. Ease of Installation and Boot Design: The orientation of the rubber boot also factors into the design and installation process. Many rubber boots feature a specific shape and attachment mechanisms that facilitate their installation toward the transfer case.