The structural mitundu ya mafuta jekeseni mapampu 3917002RX akhoza kugawidwa m'magulu awiri: zida mtundu ndi rotor mtundu. Mapampu a jekeseni wamagetsi amagawidwa kukhala mtundu wa zida zamkati ndi mtundu wa zida zakunja. Zotsirizirazi zimatchedwa mapampu ojambulira mafuta.