I'd like to see pics.
When the cable broke, was it where the cable turns the bend under the upper half?
I ask bc I am worried that this bend could be a high stress point. I work with bicycles and on brake and shifter cables anytime there is a tight bend over something then the result is always a broken cable down the line.
Others have said it, I say again:
When the top is not resting in the down position, anywhere between slightly raised and fully raised, then there is tension on the cables. Always! Lowering the top so pressure is on the safety bar does NOTHING and involves IN NO WAY the cables. All that does is take tension off the hydraulic system, not the cable system.
The hydraulic system moves the cables. Resting the hydraulic system has zero effect on the cables, the cables are always attached to and always holding up the top unless you have fully lowered the top to the down and closed position.
The hydraulic system is 100% capable of supporting the weight of the top. Unless a pipe or valve burst it is fine to let the hydraulic system support.
All the safety bar does is ensure that if something does burst that the hydraulic ram remains in the up position, so camper does not crash down.
There is always tension on the cables.
That said, the cables can support way more weight that that roof, 5 roofs even.
Think of bridges made of cables, they are under tension for over 100 years.
2nd on removing the trim to oil the cable.
Also, do not remove the top, or lift if higher when replacing a cable, totally unnecessary. Remove the trim as stated before.
If you make a cable, bolt the loop end to the upper, then run the cable towards the other end, threading it through the pulleys.
Loop it at the frame end where it ends and is adjusted, and make sure it is the right length before making the final cut.
You will have probably used an i-bolt at the frame, and maybe a big one and had to drill out the frame hold bigger.
Show pics if you did