The damper should go in & out slowly with a lot of resistance. If it thumping as you describe when stopping & starting the damper needs replacing. You will need correct damper for whatever hitch head you have. If it is an Al-ko hitch there will be a serial number on head to guide you. Easy diy job to replace if you can use tools. Search online you will find instructions.
yeh , your problem is almost certainly the damper rod, it fits inside the drawbar, and looks just like a gas strut used on car rear boot doors. when ordering or collecting a new one , match the numbers on the strut itself, also see my thread about 5 posts down from this
Have you tried to inject a load of fresh grease into the damper, that can have a bearing on the situation. If it fixes it, and it did in mine, it's a much cheaper first option.
Dave.
------------- Never argue with an idiot, they will drag you down to their level and beat you on experience.
Mark Twain.
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Topic: Break damper
via mobile 25/5/2026 at 3:32pm
