Shower tap dripping

On long trip,after using shower, water dripping, think it is hot water tap. Isit an easy job to do on the road and and clues as to size of a washer needed? Hoping it is standard size and easy job.

Just back, dismantled tap - recess for the washer on the brass insert valve cracked and missing in places, so need to replace.
Looked on ebay etc, struggling to find a replacement. The two O-rings on the shaft look find. The end is a square for the tap handle. Not sure what size it is.
Any help appreciated.
John

I'm surprised another Symphony owner hasn't spotted your post as they should have the answer. Alternatively you could contact AS who would tell you the size. My van is a Duetto (of similar age) but not sure if your shower is the same as fitted to mine.

Thanks for reply - struggling to find a direct replacement - will contact AS direct

Replacement taps sourced and received - now to fit. Obtained two sets for future maintenance.

JandL wrote:Replacement taps sourced and received - now to fit. Obtained two sets for future maintenance.

Glad you got sorted. Might be useful to other Symbol owners if you posted a link to the supplier and item.

Ebay- daily trawl for about a week - came up with the goods.