towed for the first time the other week, is this normal for caravan brakes, when braking hard (after some lady pulled out in front of me only to drive at 15 mph for a short distance then stop me again by waiting to make a right turn FFS!?!!??!) is it normal to feel a shunt as if someone has slammed into the back of you or should it be slightly smoother. obviously its over a ton behind you coming to a sudden stop, but does this indicate that the brakes on the caravan dont work as well as they should or is it normal.
Quote: Originally posted by LobeyDosser on 15/4/2014No it is not normal and I think you should have your Hitch Damper checked out pronto!
-----------------------------------------------------------Or need brakes adjusting as hitch is moving to far before they are applied-
Probably hitch damper had it, this is shock absorber inside hitch. With caravan uncoupled, get hold of hitch & push back, compressing bellows. It should need a lot of effort but it should push back slowly & smoothly & when released slowly come out again. If it is easy to push back or difficult but sticky & lumpy, its probably had it.
New dampers are around £60-£80 depending on hitch, you can diy if you can use tools & draw tube & bushes will probably need cleaning as well. A workshop will charge an hour or more labour + parts which may include new bushes as well.
It looks like a gas strut like in car tailgate but shorter & thicker, it is specific to hitch, you have to get correct part. They may well have checked it at service & found it ok,ish. Hitch dampers tend to fail gradually, if yours is ok apart from heavy braking then its up to you if you want to change it. If you do you will notice difference, braking will be much smoother. Workshop will charge about £120 to replace, labour & parts.
Its fairly straightforward diy if you have tools & understand what you are doing.
We had the hitch damper changed last Aug and that was £80.
The mobile service engineer spotted it during an annual service, took the old one out so that he could obtain the correct replacement then went back to the storage yard where our van was at that time and fitted the new one. I thought that considering the double journey, the new part and his labour that 80 quid was a good price.
When we went there to tow it home, our first tow with what was a new to us van, it towed like a dream.
Older vans have units like shock absorbers but most manufacturers went to gas struts as they work at any orientation.
As far as the operation goes, you can check the strut quite easily by seeing if it is easier to close or open in one direction.
Our trailer does give us a bit of a shunt if we brake quickly, there is a reaction time involved, but a faulty gas strut will give you a hard 'bang' if it has failed, even under deceleration.
Most struts fail on the closing stroke, we've had one out of four fail on the opening stroke.
Get the number off the strut, then look on Google.