How to grease moog U joints? – Ultimate Guide

Maintaining the proper lubrication of your vehicle’s U joints, or universal joints, is crucial for smooth operation and longevity. In this article, we will explain how to grease Moog u joints, a famous brand of U joints found in many vehicles.

Materials Needed

  • Moog U joint
  • Lithium-based grease
  • Grease gun
  • Rags or paper towels

Step 1: Prepare the U Joint

Before you begin the greasing process, ensuring that the U joint is clean is essential. Use a rag or paper towel to wipe away any dirt or debris that may be present on the U joint.

Step 2: Locate the Grease Fittings

Moog U joints have grease fittings located on each end of the cross. These fittings are small, circular openings that allow you to access the internal grease passages of the U joint.

Step 3: Attach the Grease Gun

Attach the grease gun to the fitting on one end of the U joint. It is essential to use lithium-based grease, as it is resistant to water and will not break down as quickly as other greases.

Step 4: Dispense the Grease

Squeeze the trigger on the grease gun to dispense the grease into the U joint. It is important to use enough grease to thoroughly lubricate the U joint, but be careful not to over-lubricate as this can cause excess grease to be forced out of the U joint, potentially leading to a mess.

Step 5: Repeat on the Other End

Once you have finished greasing one end of the U joint, repeat the process on the other end. This will ensure that the entire U joint is lubricated correctly.

Step 6: Wipe Away Excess Grease

Use a rag or paper towel to remove any grease that may have been forced out of the U joint during the greasing process. This will help prevent a mess and ensure that the U joint is properly lubricated.

Step 7: Test the U Joint

After you have finished greasing the U joint, it is a good idea to test its movement to ensure it operates smoothly. If the U joint feels stiff or notchy, you may need to add more grease.


How often should I grease my U joints?

It is generally recommended to grease your U joints every 10,000 miles or every six months, whichever comes first. However, this can vary depending on your vehicle’s specific make and model and the operating conditions it is subjected to. Consult your owner’s manual or a mechanic for more particular recommendations.

Can I use any grease on my U joints?

No, it is essential to use lithium-based grease on your U joints. Other types of grease, such as petroleum-based grease, can break down and become less effective over time, potentially leading to premature failure of the U joint.

What happens if I don’t grease my U joints?

Suppose your U joints are not adequately lubricated. In that case, they can become stiff and notchy, leading to poor vehicle performance and an increased risk of failure. Proper lubrication is crucial for your U joints’ smooth operation and longevity.

Can I grease my U joints without a grease gun?

While a grease gun is the most effective and efficient tool for greasing U joints, it is possible to grease them without one. You can use a small brush or a cloth to apply grease to the fittings on the U joint. However, this method can be messy and time-consuming. It may not provide as thorough lubrication as using a grease gun.

Can I reuse my U joint if I take it out and grease it?

In general, it is not recommended to reuse a U joint once it has been removed. U joints are designed to be worn, and they may have sustained damage during the removal process. Additionally, it can be difficult to properly lubricate a U joint once removed, as the internal grease passages may not be fully accessible. It is best to replace the U joint with a new one to ensure optimal performance.

Are Moog U joints better than other brands?

Moog is a well-respected brand in the automotive industry and is known for producing high-quality U joints. However, there are many other reputable brands on the market as well. Researching and choosing a U joint that is compatible with your vehicle and meets your specific needs is essential.

Can I grease my U joints while they are still installed in the vehicle?

Yes, it is possible to grease your U joints while still installed in the vehicle. Locate the grease fittings on the U joint and attach the grease gun as instructed above. However, if the U joints are challenging to access or are located in a tight space, removing them and greasing them on a workbench may be more accessible.

Umair Ramzan

Umair Ramzan

Umair Ramzan is a writer who seamlessly navigates the worlds of automotive and skateboarding, combining technical expertise with a passion for these dynamic cultures.

Leave a Reply