our horsebox ramp has become very heavy to lift and i decided to tighten the springs which are under the lorry.after tightening i pulled down the ramp and heard a crack. investigation found that the 2 upright hinges had moved and were being pushed up.the crack appears to be when the spring hit a part of the ramp as the upright moved upwards
we did exactly the same , except our hinges broke & the ramp flew off nearly taking my legs with it SO be careful !! we are now fitting foulger springs (external) as i think it is safer
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