HARNESS AS-TRANSMISSION 3862392 - Caterpillar

Illustration 1 g00530577
Hoist cylinders (2) Cylinder (second stage) (3) Cylinder (first stage)
Illustration 2 g00281531
Cross section of hoist cylinder (1) Rod assembly (2) Cylinder (second stage) (3) Cylinder (first stage) (4) Grooves in the end of the cylinder (second stage) (5) Chamber in the head end of the hoist cylinder (6) Opening to the head end of the hoist cylinder (7) Opening to the rod end of the hoist cylinder (8) Chamber between cylinders (first stage and second stage) (9) Chamber between the rod assembly and cylinder (second stage) (10) Orifices in the rod assembly (11) Head (12) Internal head (13) PistonRaising the Dump Body
Illustration 3 g00281955
Hoist cylinder (first stage) to extended length (1) Rod assembly (2) Cylinder (second stage) (3) Cylinder (first stage) (4) Grooves in the end of the cylinder (second stage) (5) Chamber in the head end of the hoist cylinder (6) Opening to the head end of the hoist cylinder (7) Opening to the rod end of the hoist cylinder (8) Chamber between cylinders (first stage and second stage) (9) Chamber between the rod assembly and cylinder (second stage) (10) Orifices in the rod assembly (11) Head (12) Internal head (13) Piston (AA) Pump oil (LL) Return oil
Illustration 4 g00281956
Extended hoist cylinder (1) Rod assembly (2) Cylinder (second stage) (3) Cylinder (first stage) (4) Grooves in the end of the cylinder (second stage) (5) Chamber in the head end of the hoist cylinder (6) Opening to the head end of the hoist cylinder (7) Opening to the rod end of the hoist cylinder (8) Chamber between cylinders (first stage and second stage) (9) Chamber between the rod assembly and cylinder (second stage) (10) Orifices in the rod assembly (11) Head (12) Internal head (13) Piston (AA) Pump oil (LL) Return oilTwo hydraulic cylinders are used to move the dump body away from the truck. When the hoist control is held in the RAISE position, the pump oil extends the two-stage cylinders and the dump body is raised to the dump position.The hoist cylinders raise the dump body in two stages. The pump oil flows into opening (6) to the head ends of the hoist cylinders. The oil flows through a tube in rod assembly (1) and into chamber (5) in the head end of cylinder (3). The pressure of the pump oil in chamber (5) moves cylinder (3) .The oil in chamber (8) must now flow through grooves (4) in the end of