  We study the possible existence of nonstrange dibaryons and tribaryons by
solving the bound-state problem of the two- and three-body systems composed of
nucleons and deltas. The two-body systems are $NN$, $N\Delta$, and
$\Delta\Delta$, while the three-body systems are $NNN$, $NN\Delta$,
$N\Delta\Delta$, and $\Delta\Delta\Delta$. We use as input the nonlocal $NN$,
$N\Delta$, and $\Delta\Delta$ potentials derived from the chiral quark cluster
model by means of the resonating group method. We compare with previous results
obtained from the local version based on the Born-Oppenheimer approximation.
