A Class Passenger Door Squeak

[Mr Colpot]

Our Aviano i727 has developed an issue where the passenger door ( not the habitation door) will squeak when we are driving. It appears that the top latch will move in transit and allow the top of the door to vibrate as we drive. If I stop and open/close the door pushing where the latches are it will be ok for a while until we hit a pothole (sadly unavoidable in the UK) and then it starts again.
I have looked at the latches and can't see a way of adjusting them - the plates with Allen screws don't appear to have any slots for adjusting. Any ideas welcome.
Thanks

 

[Jabstatt]

Try lubricating the door seals with something like trim cleaner or bumper restorer. Be sure it’s not pigmented, obviously
You won’t hear it if is slides !

Works on our Boxer cab door.
Needs redoing monthly. PITA!

Tony

 

[Bill-H]

Perhaps the backing plates behind the catches have the adjustment, have you tried loosening the allan bolts first to see if there is any adjustment. I'd tighten them with something with more leverage than an allan key.
Are you sure it's the door jam plates which are loose rather than the locking mechanism within the door?

 

[Mr Colpot]

Perhaps the backing plates behind the catches have the adjustment, have you tried loosening the allan bolts first to see if there is any adjustment. I'd tighten them with something with more leverage than an allan key.
Are you sure it's the door jam plates which are loose rather than the locking mechanism within the door?

Thanks - will maybe try taking the plate right off to see what's behind. If I push the latches to the closed position there is no discernable play on them. The plates are tight but I think maybe the latches don't line up with the slots properly

 

[Mr Colpot]

Try lubricating the door seals with something like trim cleaner or bumper restorer. Be sure it’s not pigmented, obviously
You won’t hear it if is slides !

Works on our Boxer cab door.
Needs redoing monthly. PITA!

Tony

Thanks - have a can of Thetford seal lubricant so am going to apply that and see

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[Mr Colpot]

Ok - the issue appears to be that the top latch doesn't engage fully with the plate as once closed I can push the top of the door out
The challenge now is to adjust the top plate
as the fixings I thought were Allen Bolts appear to be rounded (whether by design or accident I am not sure as all the bolts are the same

 

[Lenny HB]

You can adjust the pins in the door, loosen the grub screw and rotate they move in an elliptical like a cam.

 

[pappajohn]

All the plates must have something behind to screw in to. They can't screw into fiberglass.
The inner and outer plates probably clamp onto the fiberglass and the holes will be larger than the screws to allow adjustment
DONT remove screws altogether, whatever is behind will fall to the bottom of the door

 

[Mr Colpot]

Job done - accessed Allen bolts from inside the motorhome after loosening the door trim and moved plate 2mm to the outside of the body and now door latches properly and (subject to road test later) should be ok now.
(thats the short version excluding lots of swearing buying a set of imperial hex keys as metric didn't work only to find that after purchase the metric suddenly decided to work.)