303i (final drive) Flashcards
(16 cards)
What is the primary function of the final drive system?
The final drive system provides the last remaining gear reduction in the overall vehicle powertrain.
What type of torque does the final drive system receive and create?
It receives a tremendous amount of input torque and creates considerable additional output torque.
Why is the final drive system crucial for off-road vehicles?
It enables off-road vehicles and equipment to operate under extremely demanding load and environmental conditions.
True or False: The final drive system’s only function is to multiply torque.
False
What must each final drive component withstand?
Each final drive component must be strong enough to withstand the forces and stresses generated by overloading, overwork, and abuse.
Fill in the blank: The final drive system absorbs shocks transmitted during operation, such as those from a _______.
bulldozer with a rear-mounted ripper
What additional role does the final drive system play beyond torque multiplication?
It must withstand the forces and stresses often generated by the overloading and abuse encountered in off-road work environments.
What type of machines are equipped with planetary final drive systems?
Off-road machines
Common applications include construction and agricultural equipment.
What are the two types of mounting configurations for planetary final drives?
Inboard mounted and outboard mounted
Each configuration has its own benefits and applications.
What are the possible reduction configurations for planetary final drives?
Single reduction, double reduction, triple reduction
Some configurations may also include a reverse gearing.
How can outboard mounted planetaries be recognized?
Large flat covers on the drive hubs and evidence of planetary pinion shafts protruding
This visual identification helps in differentiating the mounting types.
What is the mounting assembly for the planetary pinion gears called?
Planetary pinion carrier assembly
This assembly plays a critical role in the functioning of the planetary drive system.
What are some advantages of the outboard mounted planetary final drives?
Having the last year reduction at the point where the wheel drive is located, enables the manufacture to increase the torque right at the wheel. This allows for use of smaller power drain components ahead or upstream of the final drive. Another advantage is ease of maintenance.
What is one possible disadvantage of an inboard mounted final drive system?
The size of the output shaft leading to the wheel or hub has to be a good size and strong enough since the last gear reduction is some distance from the drive wheel or hub.
What is a chain final drive system?
Many wheeled skid steer and motor graders use this. It acts like a walking beam system, used on highway trucks.
You have your final drive axles had 2 drive sprockets on both ends of each side and had one sprocket ahead of the axle and one behind the axle and both of those sprocket had their own wheel axles going out of them.
