Replace ball assembly 1 in diagram repair part rp70 as shown for lever handles or rp212 for knob handles replace cam packing 2 in diagram repair kit rp61.
Delta arabella kitchen faucet leaking.
Leaks in this type of faucet usually can be fixed with a new neoprene valve seat and spring.
Leaks from under the handle.
Replace stem unit assembly 3 in diagram repair part rp1740 leaks from base of the spout.
If this connection is secure and not leaking then check the hose for damage.
Over the valve seat and spring the stem is held into the body with a bonnet nut.
The handle then fits onto the top of the stem.
Delta single handle ball valve faucets are among the least troublesome to repair although the fact the valve is spring loaded can make disassembly a little finicky.
With a stem style faucet a neoprone valve seat and spring fits into the water inlet port in valve body.
When one of these faucets.
Replace seats and springs 4 in diagram repair part rp4993 if leak persists.
Replace o rings 1 in diagram repair part rp2055 leaks from aerator.
Leaks from under the handle.
Replace stem unit assembly 3 in diagram repair part rp1740.
Since the water travels through the hose and not the spout itself a leak from the base of the spout would be very unlikely.