YIKONG YK4084 RC Car Parts shock absorber set 14069
The YIKONG YK4084 RC Car comes with CNC aluminum adjustable oil-filled shocks, with the complete shock set numbered 14069 and the springs numbered 14068. Leaking after long use is normal—refilling oil and replacing O-rings is cheaper than replacing the whole set of parts.
1. Original Configuration
Officially described as "CNC Aluminum Adjustable Oil-Filled Shock Absorbers." Page 14 of the manual specifies a 3mm oil fill height, so there's a clear standard for maintenance.
2. Why They Leak
A 1/8 crawler weighs 4.2kg, and the shock shaft extends and retracts repeatedly; once the O-ring wears, oil seeps out from the bottom. Symptoms: the body sinks after sitting a while, body roll increases in turns, and support feels soft during crawling. This is wear, not a quality issue.
3. Maintenance Steps
Remove the shock, unscrew the bottom cap, pour out the old oil, and check the O-ring for deformation or nicks. Install a new O-ring, add shock oil to the specified height, slowly pump a few times to bleed air bubbles, then tighten. Don't overfill—leave a little air space.
4. FAQ
Do I have to fix a leak immediately?
Slight seepage can last a while, but once damping is noticeably soft, it's time to address it. Letting it drag on causes the shaft and body to grind, increasing wear.
What shock oil spec should I use?
The manual specifies 0IL/70#; buy to that spec.
5. Conclusion
O-rings and shock oil are cheap; maintaining the YIKONG YK4084 RC Car shocks yourself is more cost-effective than replacing the 14069 set. The 3mm oil height in the manual is the standard—don't fill by feel.