Not knowing what kind of trouble to unhitch I wonder if the wear on a ball can cause trouble in unhitching. Misformed could make it easier to unhitch I would guess and this is where the danger lies.
I would not bank on the fact that if the caravan has been serviced that enough effort is put in to check the locking mechanism operation.
Sometimes just moving the car an inch forward if your last movement was in reverse or an inch back if your last movement was forward, will release the tension on the hitch mechanism.
Hitch your caravan to your car ( preferably on level ground ), then immediately unhitch the van without moving the car or van - if it unhitches OK then your mechanism has no problem. ( a light smearing of grease is recommended on the tow ball )
After towing, and before unhitching, make sure that the caravan draw-shaft is not fully compressed or fully pulled out - this will allow some "give" in the shaft as you unlock and lift the socket off the tow ball.
Hope this is of some help.
Another way if unhitching if on level ground and it is a manual car is to leave it in say 3rd gear with the hand brake off. The car could now by rocked forward (against the bumper with a knee) or backwards(more difficult). Apply the hand brake on the caravan. Feel it it is easy to move the hitch on the carvan sideways. If it moves easy then there is no pulling or pushing force on the ball and it should be easy. Pushing the hitch to any side should also make releasing easier.
As the Carvette 6 is not a too heavy caravan if everything is in good order it should not be difficult to unhitch.
Just my 2cent on this: grease + dust = grinding paste. This is how I have been taught all the years of towing caravans and trailers on towballs.
While revamping my van over the last couple of months - I have also dis-asembled the coupling mechanism (My van is fitted with the AL-KO head). There is a small pin and spring under the "Safety Catch Assembly" that gets stuck over years of use because of dust and rust, and grease that gets forced in by the ball by applying grease periodically to the ball and inside of coupling. There is also a spring-loaded "Plunger" that may get stuck caused by rust, and grease and grime build-up.
But in the end: my best advise is to maybe contact AL-KO Trailco in Vereeniging - I suspect that Jam's Caravette 6B will also have the AL-KO head coupling.
Elize, Dis goeie raad wat hierbo gegee is en wat jy gerus kan volg. Ek gebruik nog al die jare 'n stukkie plastiek tussen die bal en die haak se koppie- van die dik soort soos van die groot kunsmissakke. Maar let op: dit moet dik plastiek wees- gewone inkopiesakke werk nie vir die doel nie. Ek sny 'n hele hoop in klein vierkante, seker so 10cmX10cm en hou dit byderhand. Dit keer slytasie van die twee komponente. Na 'n rit van honderde kilometer is die plastiek nie eers deurgeskaaf nie en daar was dus nie kontak tussen die twee metaaldele nie so hulle kon nie slyt nie. Enige olie op die bol is ook 'n gemors. Behalwe vir die "grinding paste " effek, vorm die olie of ghries 'n vierlike swart stof wat altyd aan jou klere kom en nie uitwas nie.
Steamer, My suggestion obviously is not to make unhiching easier, only to reduce, even eliminate wear and tear. The only reason I see that makes unhitching difficult, is when the hitch is under stress because the unit is on unlevel ground or because the caravan moved forward because of the last braking. My previous older caravan especially was susceptable- it had an older type of hitch wich CI used. You had to move the car back or forward with the tow vehicle while the caravan's hand brake was engaged to reduce the strees on the hitch before the two parts would come apart. The present one, with an Alko hitch, is much less temperamental.
Two things I do when un hitching.
1) I allways leave the safety chain on till all other connections between van and vehicle have been removed.
2) I allways engage the release clip/lever before I try and lift the hitch off of the towball.
What also helps, is to rotate the hitch from left to right a few times before trying to unhitch.
Baie goeie raad Johan- natuurlik mits dit Elize is wat skree.