DennisT
RVF Supporter
- Joined
- Dec 1, 2022
- Messages
- 1,026
- RV Year
- 2022
- RV Make
- Newmar
- RV Model
- Superstar 4061
- RV Length
- 41
- Chassis
- FCCC
- Engine
- Cummins 360
- TOW/TOAD
- 2022 Jeep Cherokee TrailHawk
- Fulltimer
- Yes
Thought I’d pass this along since I ran into the issue today.
Well, picked up the latest TST 770 with new screen and 10 sensors for coach and toad at the Tampa show this past January.
Old caps were 6 years old and didn’t have the toad setup previously.
Like that the new kit comes with the booster antenna as well.
Checking pressures today and installing all the caps I found a difference in the new caps.
Threaded connection to cap is wider and shorter than the old ones.
They hit the rim on our front wheels prior to getting all the way threaded on
Appears the new caps may need short extensions to use.
Luckily our old caps are compatible with the new monitor so I updated the front sensor codes and installed the old ones - good to go for now.
Update - added pics for info.
Old cap
New cap
Well, picked up the latest TST 770 with new screen and 10 sensors for coach and toad at the Tampa show this past January.
Old caps were 6 years old and didn’t have the toad setup previously.
Like that the new kit comes with the booster antenna as well.
Checking pressures today and installing all the caps I found a difference in the new caps.
Threaded connection to cap is wider and shorter than the old ones.
They hit the rim on our front wheels prior to getting all the way threaded on

Appears the new caps may need short extensions to use.
Luckily our old caps are compatible with the new monitor so I updated the front sensor codes and installed the old ones - good to go for now.
Update - added pics for info.
Old cap
New cap