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Category: 320C

320C

320C Excavator Hydraulic System – Final Drive

Posted on August 2, 2021 by sam

Illustration 1 g00674170 Final drive (1) Planetary carrier (first stage) (2) Bolt (3) Sun gear (second stage) (4) Planetary carrier (second stage) (5) Gear coupling…

320C

320C Excavator Hydraulic System – Pilot Valve (Straight Travel)

Posted on July 30, 2021 by sam

The auxiliary pedal control may be used for straight travel operation. The auxiliary pedal control controls the travel motors from one pilot control valve. The…

320C

320C Excavator Hydraulic System – Control Valve (Straight Travel)

Posted on July 30, 2021 by sam

Straight travel (tracking) can be maintained even though there is a swing operation or implement operation during travel. Illustration 1 g00683321 Main control valve compartment…

320C

320C Excavator Hydraulic System – Oil Makeup (Travel System)

Posted on July 30, 2021 by sam

Illustration 1 g00701657 Oil makeup operation (1) Motor rotary group (2) Left travel motor (3) Passage (4) Check valve (5) Line (6) Swivel (7) Line…

320C

320C Excavator Hydraulic System – Travel Counterbalance Valve

Posted on July 30, 2021 by sam

Illustration 1 g00701651 Left travel motor and travel counterbalance valve (1) Crossover relief valve (reverse travel) (16) Crossover relief valve (forward travel) (22) Port (supply…

320C

320C Excavator Hydraulic System – Displacement Change Valve

Posted on July 30, 2021 by sam

Small Displacement Change Operation Illustration 1 g00820789 Travel motor (partial diagram) (1) Swashplate (2) Piston (3) Piston chamber (4) Passage (5) Displacement change valve (6)…

320C

320C Excavator Hydraulic System – Travel Parking Brake

Posted on July 30, 2021 by sam

The travel parking brake is built into the travel motor. When the oil delivery from the pump flows to the travel motor, the parking brake…

320C

320C Excavator Hydraulic System – Travel Motor

Posted on July 30, 2021 by sam

Illustration 1 g00682968 Travel motor (1) Drive shaft (2) Stopper (3) Piston (4) Swashplate (5) Slipper (6) Retainer (7) Barrel (8) Piston guide (9) Check…

320C

320C Excavator Hydraulic System – Pilot Valve (Travel)

Posted on July 26, 2021 by sam

Illustration 1 g01232154 Travel pilot control valve (1) Travel lever/pedal (2) Pedal (3) Rod (4) Seat (5) Spring (6) Spring (7) Spool (8) Passage (9)…

320C

320C Excavator Hydraulic System – Travel Hydraulic System

Posted on July 26, 2021 by sam

Travel Control Illustration 1 g00699122 (1) Left travel motor (52) Travel brake valve Illustration 2 g00699126 Final drive (53) Track (54) Sprocket (55) Final drive…

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