When purchasing this cartridge without the brass housing you may come accross the following on fitting:
Your old body may not have the guide pin holes for the cartridge guide pins on the rear of the cartridge, If this is the case you can break off the guide pins for it to fit properly in to the body. If you try to screw the body in to the brass housing without the guide pin holes in the body the cartridge will leak. Also, if you try to screw in the cartridge without breaking off the guide pins, the section that you are trying to screw in will snap, and you will need to purchase a new cartridge.
You can have problems getting the cartridge to seal and you may need to remove and re-fit the cartridge a couple of times before it will seal properly. The cartridge is not faulty if this happens and may just need a little lubrication on the seals for it to slip into the body more freely.
Make sure you DO NOT over tighten the 4 screws holding the cartridge in to the body as this can break the lug holes where the screws secure it in to the body.
Triton sugest that if your shower is recessed then fitting the cartridge with the body is a must however in most cases you can get away with the cartridge without the body which is cheaper.
HP / COMBI - High pressure cartridge without brass body - 83304970
HP / COMBI - High pressure cartridge with brass body - 83304960
Watch the servicing video below: