Ramp door spring assist overhead.
Cargo trailer door spring tension.
The overhead ramp door spring system is designed for enclosed trailers.
Overhead mounted spring assists allow easier closure of trailer ramp doors.
Closest to the cargo door down low taped to the existing wiring is the plug connector for the trailer.
Recently our polar pj trailer hybrid snowmobile trailer polar sport enclosed trailer had a stuck door it would not pull open either it was frozen or ja.
Recommended enclosed trailer.
The system features a double drum and cable.
Ask for the original contact cargo systems at.
Posted by anonymous on may 18 2012.
Sizes range from assists for 5 wide trailers to 8 5 wide trailers.
5 and 6 wide 1 wheel 1 spring.
The mounting bracket has two 3 8 holes that allow the installer to bolt the spring to the rear header.
With an enclosed trailer ramp spring ers120d81 when the door is lowered it will pull the cables which will turn the pulleys and put tension on the springs.
The torsion springs on our trailer door need adjustment.
The cables could not be detached with the ramp door lowered because the springs would suddenly lose tension and they could break and that is very dangerous.
When you put your wiring through connect.
Down on the floor is a plug for the hole that you need to pull out.
And only applies to cargo systems and ramp heister spring assemblies.
The door is very hard to open but also hard to close.
I recommend having a garage door company take a look at it to determine if anything can be done to fix the existing system or if a new system is needed.
Single spring 96 2 x 60 lbs.
The springs used for trailer ramps doors hatches gates and lids are torsion springs.
The the torsion spring legs are what allow for your gate ramp door hatch.
All mounting hardware included except for mounting bolts.
7 wide 2 wheel 1 spring.
The springs are under a lot of tension.
This tension chart has been developed by cargo systems inc.
8 and 8 5 wide 2 wheel 2 spring.
We will advise you on proper placement of cable anchor bracket and number of turns for safe proper operation so spring is not over stressed.
Rollup door spring tension.
These springs are made up of round wire helically wound to make coils.
