Functions as a motor for intraflagellar retrograde transport in chemosensory neurons (PubMed:10545497, PubMed:28479320). Functions in cilia biogenesis (PubMed:10545497, PubMed:27515926). The cytoplasmic dynein complex 2 is probably composed by a heavy chain che-3 homodimer and a number of light intermediate chains. Shorter phasmid cilia with an irregular morphology. Belongs to the dynein heavy chain family.