  We present results for the strong widths corresponding to the $\Sigma_c\to
\Lambda_c \pi$, $\Sigma_c^{*}\to \Lambda_c \pi$ and $\Xi_c^{*}\to \Xi_c \pi$
decays. The calculations have been done in a nonrelativistic constituent quark
model with wave functions that take advantage of the constraints imposed by
heavy quark symmetry. Partial conservation of axial current hypothesis allows
us to determine the strong vertices from an analysis of the axial current
matrix elements. Our results \hbox{$\Gamma(\Sigma_c^{++}\to \Lambda_c^+
\pi^+)=2.41 \pm0.07\pm0.02 \mathrm{MeV}$}, {$\Gamma(\Sigma_c^{+}\to \Lambda_c^+
\pi^0)=2.79 \pm0.08\pm0.02 \mathrm{MeV}$}, {$\Gamma(\Sigma_c^{0}\to \Lambda_c^+
\pi^-)=2.37 \pm0.07\pm0.02 \mathrm{MeV}$}, {$\Gamma(\Sigma_c^{* ++}\to
\Lambda_c^+ \pi^+)=17.52\pm0.74\pm0.12 \mathrm{MeV}$}, {$\Gamma(\Sigma_c^{*
+}\to \Lambda_c^+ \pi^0)=17.31\pm0.73\pm0.12 \mathrm{MeV}$},
{$\Gamma(\Sigma_c^{* 0}\to \Lambda_c^+ \pi^-)=16.90\pm0.71\pm0.12
\mathrm{MeV}$}, {$\Gamma(\Xi_c^{* +}\to \Xi_c^0
\pi^++\Xi_c^+\pi^0)=3.18\pm0.10\pm0.01 \mathrm{MeV}$} and {$\Gamma(\Xi_c^{*
0}\to \Xi_c^+ \pi^-+\Xi_c^0\pi^0)=3.03\pm0.10\pm0.01 \mathrm{MeV}$} are in good
agreement with experimental determinations.
