| Узел | Модель |
| (30) - TRANSMISSION ASSEMBLY | (DAVIS) - FLEETLINE 25+4 TRENCHER (1/76-12/78) |
| (390) - HYDRA-BORER PUMP, PRESSURE, AND RETURN HYDRAULIC CIRCUIT, USED BEFORE 30+4 SPECIAL SERIAL NO. 3761 | (P60) - DAVIS FLEETLINE 30+4 TRENCHER (1/70-12/88) |
| (392) - HYDRA-BORER PUMP, PRESSURE, AND RETURN HYDRAULIC CIRCUIT, USED ON 30+4 SPECIAL S/N 3761 AND AFTER | (P60) - DAVIS FLEETLINE 30+4 TRENCHER (1/70-12/88) |
| (394) - HYDRA-BORER PUMP, PRESSURE, AND RETURN HYDRAULIC CIRCUIT, USED ON 30+4 SPECIAL S/N 3761 AND AFTER | (P60) - DAVIS FLEETLINE 30+4 TRENCHER (1/70-12/88) |
| (398) - HYDRA-BORER PUMP, PRESSURE, AND RETURN HYDRAULIC CIRCUIT, USED WITHOUT LINE LAYER & WITHOUT BACKHOE | (P60) - DAVIS FLEETLINE 30+4 TRENCHER (1/70-12/88) |
| (390) - HYDRA-BORER PUMP, PRESSURE, AND RETURN HYDRAULIC CIRCUIT, USED BEFORE 30+4 SPECIAL SERIAL NO. 3761 | (SD100) - DAVIS FLEETLINE 40+4 TRENCHER (1/70-12/86) |
| (392) - HYDRA-BORER PUMP, PRESSURE, AND RETURN HYDRAULIC CIRCUIT, USED ON 30+4 SPECIAL S/N 3761 AND AFTER | (SD100) - DAVIS FLEETLINE 40+4 TRENCHER (1/70-12/86) |
| (394) - HYDRA-BORER PUMP, PRESSURE, AND RETURN HYDRAULIC CIRCUIT, USED ON 30+4 SPECIAL S/N 3761 AND AFTER | (SD100) - DAVIS FLEETLINE 40+4 TRENCHER (1/70-12/86) |
| (398) - HYDRA-BORER PUMP, PRESSURE, AND RETURN HYDRAULIC CIRCUIT, USED WITHOUT LINE LAYER & WITHOUT BACKHOE | (SD100) - DAVIS FLEETLINE 40+4 TRENCHER (1/70-12/86) |