| Узел | Модель |
| (24) - BASIC HYDRAULIC CIRCUIT W/O ATTACHMENTS | (L55) - DAVIS FLEETLINE 70+4 TRENCHER (1/70-12/79) |
| (08) - HYD SYS PROPULSION CIRCUIT, OIL COOLER CIRCUIT, TANDEM PUMP CIRCUIT (UP TO S/N 1107194) | (N63) - DAVIS MINI-SNEAKER CABLE LAYER (1/78-12/88) |
| (16) - HYDRAULIC SYSTEM, PROPULSION CIRCUIT, UP TO SPEC. NUMBERS P42WS19, P42HZ20, P57WS21, P57HZ22 | (P42) - DAVIS FLEETLINE 30+4 SUPER TRENCHER (1/72-12/84) |
| (17A) - HYDRAULIC SYSTEM, PROPULSION CIRCUIT, SPEC. NUMBERS P42WS19, P42HZ20, P57WS21, P57HZ22 AND UP | (P42) - DAVIS FLEETLINE 30+4 SUPER TRENCHER (1/72-12/84) |
| (36) - HYDRAULIC SYSTEM, ANGLE DOZER, ANGLE CYLINDER ASSEMBLY | (P42) - DAVIS FLEETLINE 30+4 SUPER TRENCHER (1/72-12/84) |
| (39A) - HYDRAULIC SYSTEM, LINE LAYER MOTOR, WITH BACKFILL BLADE | (P42) - DAVIS FLEETLINE 30+4 SUPER TRENCHER (1/72-12/84) |
| (40) - HYDRAULIC SYSTEM, LINE LAYER LIFT, WITHOUT BACKFILL BLADE | (P42) - DAVIS FLEETLINE 30+4 SUPER TRENCHER (1/72-12/84) |
| (41A) - HYDRAULIC SYSTEM, LINE LAYER MOTOR, WITHOUT BACKFILL BLADE | (P42) - DAVIS FLEETLINE 30+4 SUPER TRENCHER (1/72-12/84) |
| (24) - BASIC HYDRAULIC CIRCUIT W/O ATTACHMENTS | (P55) - DAVIS FLEETLINE 70+4 TRENCHER (1/70-12/79) |
| (16) - HYDRAULIC SYSTEM, PROPULSION CIRCUIT, UP TO SPEC. NUMBERS P42WS19, P42HZ20, P57WS21, P57HZ22 | (P57) - DAVIS FLEETLINE 40+4 SUPER TRENCHER (1/72-12/86) |
| (17A) - HYDRAULIC SYSTEM, PROPULSION CIRCUIT, SPEC. NUMBERS P42WS19, P42HZ20, P57WS21, P57HZ22 AND UP | (P57) - DAVIS FLEETLINE 40+4 SUPER TRENCHER (1/72-12/86) |
| (36) - HYDRAULIC SYSTEM, ANGLE DOZER, ANGLE CYLINDER ASSEMBLY | (P57) - DAVIS FLEETLINE 40+4 SUPER TRENCHER (1/72-12/86) |
| (39A) - HYDRAULIC SYSTEM, LINE LAYER MOTOR, WITH BACKFILL BLADE | (P57) - DAVIS FLEETLINE 40+4 SUPER TRENCHER (1/72-12/86) |
| (40) - HYDRAULIC SYSTEM, LINE LAYER LIFT, WITHOUT BACKFILL BLADE | (P57) - DAVIS FLEETLINE 40+4 SUPER TRENCHER (1/72-12/86) |
| (41A) - HYDRAULIC SYSTEM, LINE LAYER MOTOR, WITHOUT BACKFILL BLADE | (P57) - DAVIS FLEETLINE 40+4 SUPER TRENCHER (1/72-12/86) |
| (08) - HYD SYS PROPULSION CIRCUIT, OIL COOLER CIRCUIT, TANDEM PUMP CIRCUIT (UP TO S/N 1107194) | (P63) - DAVIS MINI-SNEAKER CABLE LAYER (1/78-12/88) |
| (08) - HYD SYS PROPULSION CIRCUIT, OIL COOLER CIRCUIT, TANDEM PUMP CIRCUIT (UP TO S/N 1107194) | (T63) - DAVIS MINI-SNEAKER CABLE LAYER (1/78-12/86) |