The 788 is an all hydraulic machine. It consists of a P type undercarriage (of which there are 5 versions: P, PL, P2A, P2AL and P2A+2A) fitted with the travel components and the turntable bearing to which the upperstructure frame is attached. The upperstructure frame supports the attachments at the front of the machine and contains the engine, the hydraulics and the operator’s compartment. When the operator works the controls, the engine driven variable flow pump delivers hydraulic fluid to the control valves. The control valves distribute the hydraulic fluid to the various cylinders and hydraulic motors. A cooling system and oil cooler maintain the fluid temperature at normal working temperature.
Key to main components Cab Instrument panel/Control panel Fuel tank Swing reduction gear motor Hydraulic swivel Undercarriage Dozer blade Front axle Hydraulic travel motor Gearbox Axle reduction gears Tyres Rear axle Stabilizers Turntable bearing Upperstructure Operator’s compartment Swing control valve Attachment control valve Valve bank partition Brake circuit filter Batteries Hydraulic filters Hydraulic pump Hydraulic reservoir Air filter Counterweight Engine hood Radiator and oil cooler Engine Valve bank partition hood Stabilizer beam Selection block circuit filter
Template Name: OM_1_col Template Date: 1994_04_29
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IDENTIFICATION NUMBERS/MACHINE COMPONENTS
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