Fix RC Shock Cap Leaks: Traxxas Ultra Shocks

Upgrading my Traxxas Stampede with aluminum shock caps revealed a frustrating oil leak. Despite a perfect fit, the new caps dripped constantly. I made a video fixing the problem in minutes, using Teflon tape.

This site contains affiliate links. When you click links, Especially with the word (Ad) you Help the site Grow. The site may receive a commission, at no additional cost to you!

Materials Needed

Materials Needed	Features	Where to buy
Teflon Tape	– Wrapping Threads To Create Air And Water Tight Connection	Click for Price Amazon
Scissors	– To make a clean cut on the Teflon Tape	Click for Price Amazon
Shock oil	– To refill the oil lost	Click for Price Amazon
Traxxas 2362 ultra shocks rebuild kit	– If you have other leaks	Click for Price Amazon

Here The Video

Step-by-Step Process

Preparation: Start by removing the shock from your RC vehicle. Clean the shock thoroughly, paying special attention to the threads on both the shock body and the cap. Use a clean cloth to remove any dirt, oil, or debris.
Applying the Tape: Take the Teflon tape and carefully wrap it around the threads of the shock body. Apply 2 layers of tape (if you can), making sure to wrap in the same direction as the threads. This is crucial for ensuring a proper seal when the cap is screwed on.
Wrapping Technique: As you wrap the tape, maintain slight tension to ensure it conforms to the shape of the threads. Be careful not to apply too much tape, as this can prevent the cap from threading properly.
Trimming: Once you’ve wrapped the threads, carefully tear or cut the tape, I use scissors ensuring there are no loose ends that could interfere with the cap’s installation.
Reassembly: Carefully screw the shock cap back onto the body. The Teflon tape will compress slightly as you tighten the cap, creating a snug seal that helps prevent oil leakage.
Final Check: After reassembling the shock, gently squeeze it to check for any immediate leaks. If everything looks good, reattach the shock to your RC vehicle.

Causes

Worn or damaged bladder/diaphragm
Missing or improperly seated seals
Overtightened shock caps

Additional Tips

Regular Maintenance: Even with Teflon tape, it’s important to regularly check your shocks for signs of wear or leakage.
Proper Oil Level: Ensure you’re using the correct amount of shock oil. Overfilling can lead to leaks, regardless of sealing methods.

Related Sites that Might Fix Your Leaky Shocks

rctech – Sealing Your Diff or Shock Caps – R/C Tech Forums: “Electric Off-Road – Sealing Your Diff or Shock Caps – I see a lot of people asking how to seal their diffs and their shock caps (some suggest teflon tape, but it has been”…

Rebuilding Ultra Shocks | Traxxas Support – YouTube: “Traxxas Ultra Shocks offer rugged and reliable performance. Follow these tips for regular maintenance of the shocks, ensuring years of performance. Rebuild Kit”…

Ultra R/C Hobbies – How To: Basic Traxxas Shock Rebuild | Replacing A Bent … – YouTube: “Today Aaron is going to be doing a basic shock rebuild on a front Traxxas Ultra shock. If you would like to see a more in depth video explaining some other items”…

rctalk – Merv shock cap keeps pulling off | RC Talk Forum – “So this actually happened twice; the first time it happened because of a failed landing from 1’ in the air. I just refilled the shock and came out today, and it happened”…

Lyhne RC – How to Fix Leaking RC Shocks – Traxxas E-Revo 1/16 – YouTube: “This video describes how I fixed the issue with the shocks leaking on my Traxxas E-Revo 1/16. This method works on most RC shocks. I use this method on several of my”…

teknoforums – Aluminium shock caps leaking!……HELP – Tekno RC Forums: “So i installed aluminium shock caps on my MT, and I followed the manual, which I’m sure i’m bleeding it incorrectly!………ANY HELP would be golden!”…

Conclusion

Using Teflon tape is a quick and affordable way to address leaking Traxxas Ultra Shock caps. While it may not be a permanent fix, many RC enthusiasts find that it significantly reduces or eliminates leakage issues. Remember, proper maintenance and assembly techniques are key to keeping your shocks in top condition. If problems persist, consider rebuilding your shocks or upgrading to more advanced models. By following these steps and maintaining your shocks regularly, you can enjoy improved performance and longevity from your Traxxas Ultra Shocks, ensuring smoother runs and less downtime for repairs.