palomino bronco B1500 lift system

[maplea]

Hello:
I bought a used pop up truck camper (2008 palomino bronco B1500) a couple of months ago. The lift system was smooth and quiet and worked well.
After camping in rainy weather for a couple of weeks, it is now very squeeky and loud, though it does go up and come down fine. The crank unit seems to be completely sealed with no easy way to open it to lubricate it.
How are these things lubricated? It is made by L&W engineering.
Any suggestions would be very much appreciated. Here are some photos of the system. One of the sealed unit, one of the right side of the sealed unit, and then the whole front system.
Thanks in advance.
Maplea

[94-Newmar]

Palomino is owned by Forest River and still in business... did you try calling their tech support department?

Truck Campers by Palomino

[maplea]

Hi: I tried emailing them but no response yet. I couldn't find a phone number on their website but will try that if I get no suggestions. Thanks.
Maplea