CAT, Ekskavatorius krautuvas, 426B, 426C, 436B, 438B, 438C, 438D, 442D, M313C, M313D, M315C, M315D, M316C, M316D, M318C, M318D, M320, M322C, M322D, Ratinis ekskavatorius, 5W6845