Results for "jounce bumpers"

Finally crawling under my Ford F53 motorhome staring at these front jounce bumpers constantly touching suspension components with no clue if this means something's actually broken. According to Ford Special Service Message SSM 53453 for 2020-2025 F53 Motorhome chassis with a GVWR of 20,500-26,000 lbs, this constant contact is actually normal.

The front jounce bumpers (service base part number 3020) are designed to be an active part of the suspension, providing incremental dampening that improves ride quality and cornering performance. For motorhomes in this weight range, constant contact is not an indication of overloading or damage.

You can reference the full details in the official Ford document: https://static.nhtsa.gov/odi/tsbs/2025/MC-11015265-0001.pdf

I want to ensure I'm not damaging my suspension or operating unsafely, but this service message confirms that constant contact is within normal operating parameters for heavier motorhomes. …more

Nobody told me that mismatched jounce bumpers on my RV's airbag spring assist could be dangerous, but now I'm worried with my kids traveling. After receiving a replacement air spring from Airlift, I discovered it's the Ultimate model with an integrated jounce bumper, while my existing undamaged bag does not have this feature. This creates a mismatched setup - one air spring with jounce bumper, one without.

My operational parameters are consistent: I maintain air pressure in both bags at all times and never run them empty. Given that the bags remain pressurized, the jounce bumper should theoretically never contact or engage during normal operation.

What are the safety implications and performance considerations of running this mismatched airbag configuration? Will maintaining proper air pressure in both bags effectively neutralize any potential issues from the jounce bumper differential? …more