2000 Jeep Cherokee Front Drive Shaft

The front drive shaft is a critical component of the 2000 Jeep Cherokee's four-wheel drive system. It transfers power from the transfer case to the front differential, enabling the front wheels to rotate when 4WD is engaged. For 2000 model year Cherokees, the front drive shaft typically uses a double cardan joint design with a slip yoke at the transfer case end. This allows for changes in shaft length as the suspension moves through its range of motion.

Understanding your Jeep's front drive shaft is important for diagnosing issues, performing maintenance, and selecting replacement parts. The 2000 Cherokee's front shaft measures approximately 30-33 inches in length, depending on the specific drivetrain configuration. It uses 1310-series U-joints and has a splined slip yoke that interfaces with the transfer case output shaft.

Here are some key specifications for the 2000 Jeep Cherokee front drive shaft:

Specification	Details
Length	30-33 inches
U-Joint Size	1310 series
Slip Yoke Splines	26 splines
Transfer Case End	Double cardan joint
Axle End	Standard U-joint

Front Drive Shaft Design and Function

The 2000 Jeep Cherokee's front drive shaft utilizes a double cardan joint design, also known as a constant velocity (CV) joint. This configuration allows for smooth power transfer even at high angles between the transfer case and front differential. The double cardan joint consists of two universal joints connected by a center yoke, which helps cancel out vibrations and maintain constant rotational speed.

At the transfer case end, the drive shaft has a splined slip yoke that slides in and out of the transfer case as the suspension moves. This slip joint allows for changes in shaft length during suspension articulation. The slip yoke typically has 26 splines that mate with the transfer case output shaft. Proper lubrication of the slip yoke splines is critical for smooth operation and preventing premature wear.

The axle end of the front drive shaft connects to the front differential pinion yoke using a standard U-joint. This joint allows for angular movement between the drive shaft and differential as the suspension moves. The U-joints used are 1310 series, which refers to the size and load capacity of the joint.

Proper driveline angles are crucial for smooth operation and longevity of the front drive shaft components. Ideally, the operating angle between the transfer case output and the drive shaft should be as close to zero as possible when the vehicle is at ride height. Excessive angles can lead to vibrations, premature U-joint wear, and potential failure of the double cardan joint.

Common Issues and Maintenance

Several issues can affect the performance and lifespan of the 2000 Jeep Cherokee's front drive shaft. One of the most common problems is worn U-joints. Signs of failing U-joints include clunking noises when shifting from drive to reverse, vibrations that increase with vehicle speed, and visible play in the joint when manually checked.

The slip yoke splines can also wear over time, especially if not properly lubricated. Worn splines can cause a clunking noise when accelerating or decelerating and may allow excessive movement in the driveline. Regular greasing of the slip yoke is essential to prevent premature wear.

Balancing issues can occur if the drive shaft is bent or if weights become detached. An unbalanced drive shaft will cause vibrations that typically increase with vehicle speed. In some cases, rebalancing the shaft can resolve the issue, but severe bends may require replacement of the entire shaft.

Proper maintenance of the front drive shaft includes:

• Regularly inspecting U-joints for wear or play
• Greasing the slip yoke splines every 30,000 miles or annually
• Checking for any visible damage or bends in the shaft
• Ensuring proper driveline angles, especially after lifting the vehicle
• Addressing any vibrations or unusual noises promptly

Replacement and Upgrades

When replacing the front drive shaft on a 2000 Jeep Cherokee, it's important to ensure the new shaft matches the original specifications. This includes the overall length, U-joint size, and slip yoke spline count. Aftermarket replacements are available, but care should be taken to select a quality part that meets or exceeds OEM standards.

For Cherokees with lifted suspensions, a longer front drive shaft may be necessary to maintain proper operating angles. Some aftermarket companies offer adjustable-length drive shafts that can be fine-tuned for optimal fitment. When installing a longer shaft, it's crucial to ensure adequate slip yoke engagement at full droop.

Upgraded components are available for those seeking improved durability or performance. These may include:

• Heavy-duty U-joints with greasable caps
• Forged slip yokes with improved spline strength
• Larger diameter tubing for increased torsional rigidity
• High-strength alloy shafts for extreme off-road use

When installing any aftermarket or upgraded drive shaft, it's important to check clearances throughout the suspension's range of motion. This includes ensuring the shaft doesn't contact the exhaust, frame, or other components at full compression and extension.

Installation Tips

Installing a new front drive shaft on a 2000 Jeep Cherokee requires attention to detail and proper technique. Here are some key steps and considerations:

1. Support the vehicle securely on jack stands before beginning work.

2. Mark the orientation of the old drive shaft before removal to ensure proper reinstallation.

3. Inspect the transfer case output seal and replace if necessary while the shaft is removed.

4. Clean and inspect the front differential pinion yoke for any damage or wear.

5. Apply thread locker to the U-joint retaining bolts before installation.

6. Torque all fasteners to the manufacturer's specifications.

7. Grease the slip yoke splines thoroughly before final installation.

8. Check for any binding or interference throughout the suspension's range of motion.

Proper alignment of the drive shaft is critical for smooth operation. When installing, ensure that the slip yoke is centered in its travel at normal ride height. This allows for equal extension and compression as the suspension moves.

After installation, it's important to test drive the vehicle and listen for any unusual noises or vibrations. If issues persist, further diagnosis may be necessary to identify any underlying problems with driveline angles or related components.

FAQs About 2000 Jeep Cherokee Front Drive Shaft

• How often should I grease the front drive shaft on my 2000 Jeep Cherokee?
  Grease the slip yoke splines every 30,000 miles or annually, whichever comes first.
• Can I drive my 2000 Cherokee without the front drive shaft?
  Yes, but only in 2WD mode. Removing the front shaft disables 4WD functionality.
• What causes vibration in the front drive shaft?
  Common causes include worn U-joints, unbalanced shaft, improper angles, or worn slip yoke splines.
• How do I know if my front drive shaft U-joints are bad?
  Look for clunking noises, vibrations that increase with speed, or visible play in the joints.
• Can I use a longer front drive shaft on my lifted Cherokee?
  Yes, a longer shaft may be necessary to maintain proper angles with a lifted suspension.